論文

• K. Shirota, A. Fukuda, N. Yadav, V. P. Panov, Jagdish K. Vij, Y. Yamagata, K. Ishikawa. Response to an applied electric field in an antiferroelectric 1/2 subphase: The role of thermal fluctuations, Physical Review E,, Vol. 107, No. 6, p. 064701-1 - 064701-11, June 2023.
• A. V. Emelyanenko, V. Yu. Rudyak, S. A. Shvetsov, F. Araoka, H. Nishikawa, K. Ishikawa. Emergence of paraelectric, improper antiferroelectric, and proper ferroelectric nematic phases in a liquid crystal composed of polar molecules, Physical Review E, Vol. 105, 064701, June 2022.
• Yoko Nambu, Yoko Yoshitake, Shohan Yanagi, Kenji Mineyama, Keisuke Tsurui, Shigeki Kuwata, Toshikazu Takata, Tadatomi Nishikubo, Ken Ishikawa. Dinaphtho[2,1-b:10,20-d]thiophenes as high refractive index materials exploiting the potential characteristics of ‘‘dynamic thiahelicenes’, Journal of Materials Chemistry C, 10, 726, Feb. 2022.
• Sultan Otep, Kosuke Ogita, Naomasa Yomogita, Kazunori Motai, Yang Wang, Yu-Cheng Tseng, Chu-Chen Chueh, Yuhei Hayamizu, Hidetoshi Matsumoto, Ken Ishikawa, Takehiko Mori, Tsuyoshi Michinobu.. Cross-linking of Poly(arylenebutadiynylene)s and Its Effect on Charge Carrier Mobilities in Thin Film Transistors, Macromolecules, American Chemical Society, Vol. 54, No. 9, pp. 4351-4362, Apr. 2021.  公式リンク  
  
• Zhengyu Feng, Vigneshwaran Swaminathan, Vitaly P. Panov, Atsuo Fukuda, Ken Ishikawa, Jagdish K. Vij. Dielectric study of a subphase stabilized in an exceptionally wide temperature range by a delicate balance of interlayer interactions and thermal fluctuations, PHYSICAL REVIEW E, 102, 012793, June 2020.
• Yuhan Hu, Ken Ishikawa. Ultrahigh dielectric constant induced by the interfacial polarization between liquid crystal droplets and polymer matrix, Japanese Journal of Applied Physics, Vol. 59, 06090, May 2020.
• Masaki Hada, Daisuke Yamaguchi, Tadahiko Ishikawa, Takayoshi Sawa, Kenji Tsuruta, Ken Ishikawa, Shin-ya Koshihara, Yasuhiko Hayashi, Takashi Kato. Ultrafast isomerization-induced cooperative motions to higher molecular orientation in smectic liquid-crystalline azobenzene molecules, Nature communications, Springer Nature Limited, Vol. 10, p. 4159, Sept. 2019.  公式リンク  
  
• Mari Ichimura, Ken Ishikawa. Development of highly fluorescent distyryl dyes for liquid crystal lasers, Japanese Jurnal of Applied Physics, Vol. 58, 032004, Feb. 2019.
• ZHENGYU FENG, Ken Ishikawa. High-performance switchable grating based on pre-transitional effect of antiferroelectric liquid crystals, Optics Express, Vol. 26, No. 24, pp. 31976-31982, Nov. 2018.
• Zhengyu Feng, Ken Ishikawa. Phase modulator mode based on the pre-transitional effect of antiferroelectric liquid crystals, Optics Letters, Vol. 43, No. 2, pp. 251-254, Jan. 2018.
• Zhengyu Feng, A. D. L. Chandani Perera, Atsuo Fukuda, Jagdish K. Vij, Ken Ishikawa, Atsuo Iida, Yoichi Takanishi. Definite existence of subphases with eight- and ten-layer unit cells as studied by complementary methods, electric-field-induced birefringence and microbeam resonant x-ray scattering, Physical Review E, American Physical Society, Vol. 96, 012701, July 2017.
• Nádasi, H., Stannarius, R., Eremin, A., Ito, A., Ken Ishikawa, Haba, O., Yonetake, K., Takezoe, H., Araoka, F.. Photomanipulation of the anchoring strength using a spontaneously adsorbed layer of azo dendrimers, Physical Chemistry Chemical Physics, Vol. 19, No. 11, pp. 7597-7606, 2017.
• Satoshi Aya, Yuji Sasaki, Hideo Takezoe, Ken Ishikawa, Kenji Ema, Takaaki Hikima, Masaki Takata, Fumito Araoka. Thermodynamically Anchoring-Frustrated Surface to Trigger Bulk Discontinuous Orientational Transition, Langmuir, Vol. 32, 10545-10550, Sept. 2016.
• Zhengyu Feng, Ken Ishikawa. Development of simultaneous measurement system of birefringence, optical rotational power, and transmission spectra for chiral liquid crystal phases, Japanese Journal of Applied Physics, Vol. 55, No. 5, pp. 050301, Mar. 2016.
• Junichi Kougo, Ken Ishikawa. Evaluation of anisotropic charge carrier mobility of perylene single crystals by time-of-flight method, Japanese Journal of Applied Physics, Vol. 55, No. 3, 030304, Feb. 2016.
• O. Pitayatanakul, T. Higashino, T. Kadoya, M. Tanaka, H. Kojima, M. Ashizawa, T. Kawamoto, H. Matsumoto, K. Ishikawa, T. Mori. High performance ambipolar organic field-effect transistors based on indigo derivatives, J. Mater. Chem. C, Royal Society of Chemistry, Vol. 2, No. 43, pp. 9311-9317, Nov. 2014.  公式リンク  
  
• S. Aya, S. Ogino, Yoshihiro Hayashi, K. Okano, D. Pociecha, K. V. Le, F. Araoka, S. Kawauchi, E. Gorecka, N. Vaupotič, H. Takezoe, K. Ishikawa. Structure-sensitive Bend Elastic Constants Between Piconewton and Subnanonewton in Diphenylacetylene-core-based Liquid Crystals, Physical Review E, Vol. 90, pp. 042506 1-6, Oct. 2014.
• Cao, H., He, W., Mao, Y., Lin, X., Ken Ishikawa, Dickerson, J.H., Hess, W.P.. Recent progress in degradation and stabilization of organic solar cells, Journal of Power Sources, Vol. 264, pp. 168-183, 2014.
• Satoshi Aya, Haruki Obara, Damian Pociecha, Fumito Araoka, Kunihiko Okano, Ken Ishikawa, Ewa Gorecka, Takashi Yamashita, Hideo Takezoe. Highly Elastic Liquid Crystals with a Sub-nanonewton Bending Elastic Constant Mediated by the Resident Molecular Assemblies, Advanced Materials, Vol. 26, pp. 1918-1922, 2014.
• S. Aya, Y. Sasaki, D. Pociecha, F. Araoka, E. Górecka, K. Ema, I. Muševič, H. Orihara, K. Ishikawa, H. Takezoe. Stepwise heat-capacity change at an orientation transition in liquid crystals, Physical Review E, Vol. 89, 022512 1–5, 2014.
• Aya, S., Zep, A., Aihara, K., Ema, K., Pociecha, D., Gorecka, E., Araoka, F., Ken Ishikawa, Takezoe, H.. Stable electro-optic response in wide-temperature blue phases realized in chiral asymmetric bent dimers, Optical Materials Express, Vol. 4, No. 4, pp. 662-671, 2014.
• Cao, Masaki Tanaka, Ken. Stabilization mechanisms of aluminum-titanium bilayer cathodes in organic solar cells, Applied physics letters, vol. 103, No. 14, pp. 143305-143305-4, Sept. 2013.
• Takahiro Ueda, Shiori Masuko, Fumito Araoka, Ken Ishikawa, Hideo Takezoe. A General Method for the Enantioselective Formation of Helical Nanofilaments, Angewandte Chemie, vol. 52, pp. 6863, July 2013.
• Takuya Ikeda, Satoshi Aya, Fumito Araoka, Ken Ishikawa, Osamu Haba, Koichiro Yonetake, Yuichi Momoi, Hideo Takezoe. Novel Bistable Device Using Anchoring Transition and Command Surface, Applied Physics Express, Vol. 6, pp. 061701 1-3, May 2013.
• Huanqi Cao, Hideo Takezoe, Ken Ishikawa. Titanium–Aluminum Bilayer Cathode for Small-Molecular Organic Solar Cells with Prolonged Life upon Exposure to Air, Japanese Journal of Applied Physics, Vol. 52, pp. 040202, Mar. 2013.
• A. V. Emelyanenko, K. Ishikawa. Smooth transitions between biaxial intermediate smectic phases, SOFT MATER, Vol. 9, pp. 3497-3508, Mar. 2013.
• Huanqi Cao, Ken Ishikawa. Lateral oxygen diffusion dominated extrinsic degradation of small molecular organic solar cells, Solar Energy Materials and Solar Cells, Vol. 109, Page 216-219, Feb. 2013.
• Lopamudra Chakraborty, Nirmalangshu Chakraborty, Dipika Debnath Sarkar, Nandiraju V. S. Rao, Satoshi Aya, Khoa Van Le, Fumito Araoka, Ken Ishikawa, Damian Pociecha, Ewa Gorecka, Hideo Takezoe. Unusual temperature dependence of smectic layer structure associated with the nematic–smectic C phase transition in a hockey-stick-shaped four-ring compound, J. MATER. CHEM. C, Vol. 1, pp. 1562-1566, Jan. 2013.
• Satoshi Aya, Fumito Araoka, Ken Ishikawa, Hideo Takezoe. Evolution of the discontinuous anchoring transition under an electric field, Physical Revew E, Vol. 87, pp. 012507 (3), Jan. 2013.
• Fumito Araoka, Go Sugiyama, Ken Ishikawa, Hideo Takezoe. Highly Ordered Helical Nanofilament Assembly Aligned by a Nematic Director Field, Advanced Functional Materials, Vol. 23, pp. 2701-2707, Jan. 2013.
• Lee, G., Araoka, F., Ken Ishikawa, Momoi, Y., Haba, O., Yonetake, K., Takezoe, H.. Photoinduced ordering transition in microdroplets of liquid crystals with azo-dendrimer, Particle and Particle Systems Characterization, Vol. 30, No. 10, pp. 847-852, 2013.
• Hyeon-Cheol Jeong, Satoshi Aya, Sungmin Kang, Fumito araoka, ken ishikawa, Hideo Takezoe. Are chiral dopants with higher twisting power advantageous to induce wider temperature range of the blue phases?, Liquid crystals, Vol. 40, pp. 951-958, 2013.
• Sandhya, K.L., Chandani, A.D.L., Fukuda, A., Vij, J.K., Emelyanenko, A.V., Ken Ishikawa. Degeneracy lifting due to thermal fluctuations around the frustration point between anticlinic antiferroelectric SmCA* and synclinic ferroelectric SmC^*, Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 87, No. 1, 2013.
• H.-C. Jeong, K. V. Le, S.-W. Choi, F. Araoka, K. Ishikawa, H. Takezoe, M. -J Gim, S. -T Hur. Transition between widened BPs by light irradiation using photo-active bent-core liquid crystal with chiral dopant, J. MATER. CHEM., Vol. 22, pp. 4627-4630, Oct. 2012.
• N. Koizumi, G. Shanker, F. Araoka, K. Ishikawa, C. V. Yelamaggad, H. Takezoe. Interplay between polarity and chirality in the electric-field-responsive columnar phase of a dipeptide derivative, NPG Asia Mater., Vol. 4, e11-1-7, Sept. 2012.
• 謝, K. V. Le, Y. Sasaki, F. Araoka, K. Ishikawa, H. Takezoe. Critical behavior in electric-field-induced anchoring transition in a liquid crystal, Phys. Rev., Vol. 86, 0107012(R)-1-4, Sept. 2012.
• I. Seo. E.-H. Sohn, J.-C. Lee, K. Song, F. Araoka, K. Ishikawa, H. Takezoe. Molecular surface structure of comb-like poly(oxyethylene) with alkyl sulfonyl side chains studied by sum-frequency generation vibrational spectroscopy, Liq. Cryst, Vol. 39, 323-33, Sept. 2012.
• Tatipamula A. Kumar, Khoa V. Le, Satoshi Aya, Sungmin Kang, Fumito Araoka, Ken Ishikawa, Surajit Dhara, Hideo Takezoe. Anchoring Transition in a Nematic Liquid Crystal doped with Chiral Agents, Phase Transitions, Vol. 85, pp. 888-899, June 2012.
• S. Aya, K. V. Le, F. Araoka, K. Ishikawa, H. Takezoe. Nano-size-induced optically isotropic nematic phase, Jpn. J. Appl. Phys., Vol. 50, 051703-1-5, Sept. 2011.
• A.V. Emelyanenko, 謝, Y. Sasaki, F. Araoka, K. Ema, K. Ishikawa, H. Takezoe. Two transitions between isotropic and nematic phases in confined liquid crystals, Phys. Rev. E, Vol. 84, 041701-1-4, Sept. 2011.
• H. Nagayama, Y. Sasaki, F. Araoka, K. Ema, K. Ishikawa, H. Takezoe. Discrete and sequential formation of helical nanofilaments in mixtures consisting of bent- and rod-shaped molecules, Soft Matter, Vol. 7, 8766-8769, Sept. 2011.
• L. Guo, E. Gorecka, D. Pociecha, N. Vaupotic, M. Cepic, R. Amaranatha Reddy, K. Gornik, F. Araoka, N. A. Clark, D. M. Walba, K. Ishikawa, H. Takezoe. Ferroelectric behavior of orthogonal smectic phase made of bent-core molecules, Phys. Rev. E, Vol. 84, 031706-1-8, Sept. 2011.
• Mayumi AKAMINE, Ken ISHIKAWA, Kiyoto MAEKAWA, Masahiro KON. The physical mechanism of cuticular color in Phelotrupes auratus (Coleoptera, Geotrupidae)ens_448 291..296, Entomological Science, 14, 291–296, Sept. 2011.
• S. Aya, Y. Sasaki, F. Araoka, K. Ishikawa, K. Ema, H. Takezoe. Isotropic-nematic transition at surface of a liquid crystal embedded in aerosol network, Phys. Rev. E, 83, 061714-1-5., Sept. 2011.
• T. A. Kumar, V. S. S. Sastry, K. Ishikawa, H. Takezoe, N. V. Madhusudana, S. Dhara. Effect of Electric Field on Defects in a Nematic Liquid Crystal with Variable Surface, Liq. Cryst., 38, 971-979, Sept. 2011.
• F. Araoka, G. Sugiyama, K. Ishikawa, H. Takezoe. Electric-field controllable optical activity in the nano-segregated system composed of rod- and bent-core liquid crystals, Opt. Mater. Express, Vol. 1, 27-35., Sept. 2011.
• Choi, H., Suzushi Nishimura, T. Toyooka, K. Ishikawa, H. Takezoe. Analysis of cavity-mode lasing characteristics from a resonator with broadband cholesteric liquid-crystal bragg reflectors, Advanced Functional Materials, Vol. 21, No. 18, pp. 3430-3438, Sept. 2011.  公式リンク  
  
• W. H. Koo, F. Araoka, K. Ishikawa, S. M. Jeong, S. Nishimura, T. Toyooka, H. Takezoe. Simultaneous extraction of ITO/organic and substrate waveguide modes from buckled organic light emitting diodes, Appl. Phys. Express, Vol. 4, 032101-1-3, Sept. 2011.
• K. V. Le, S. Aya, Y. Sasaki, H. Choi, F. Araoka, K. Ema, J. Mieczkowski, A. Jakli, K. Ishikawa, H. Takezoe. Liquid Crystalline amorphous blue phase and its large electrooptical Kerr effect, J. Mater. Chem, Vol. 21, 2855-2857, Sept. 2011.
• L. Guo, K. Gomola, E. Gorecka, D. Pociecha, S. Dhara, F. Araoka, K. Ishikawa, H. Takezoe. Transition between two orthogonal polar phases in symmetric bent-core liquid crystals, Soft Matter,, Vol. 7, 2895-2899, Sept. 2011.
• Suzushi Nishimura, W. H. Koo, S. Y. Boo, S. M. Jeong, F. Araoka, K. Ishikawa, T. Toyooka, H. Takezoe. Controlling bucking structure by UV/ozone treatment for light extraction from organic light emitting diodes, Organic Electronics: physics, materials, applications, Vol. 12, No. 7, pp. 1177-1183, Sept. 2011.  公式リンク  
  
• H. G. Kim, J. S. Jang, S.-T. Hur, S.-W. Choi, S. S. Kim, H. Takezoe, K. Ishikawa. Thin-film field-effect transistors of copper phthalocyanine on a rubbed polyethersulfone, Thin Solid Films, Vol. 519, 2011-2014, Mar. 2011.
• Satoshi Aya, Sasaki Yuji, Fumito Araoka, Kenji Ema, Ken Ishikawa, Alexander V. Emelyanenko, Hideo Takezoe. Observation of Two Isotropic-Nematic Phase Transitions Near a Surface, PHYSICAL REVIEW LETTERS, Vol. 106, page 117801, Mar. 2011.
• W. H. Koo, S. M. Jeong, S. Nishimura, F. Araoka, K. Ishikawa, T. Toyooka, H. Takezoe. Polarization conversion in surface-plasmon-coupled emission from organic light emitting diodes using spontaneously formed buckles, Adv. Mater., Vol. 23, 1003-1007, Mar. 2011.
• L. Guo, S. Dhara, B. K. Sadashiva, S. Radhika, R. Pratibha, Y. Shimbo, F. Araoka, K. Ishikawa, H. Takezoe. Polar switching in the SmAdPA Phase composed of asymmetric bent-core molecules, Phys. Rev. E,, Vol. 81, 011703-1-6, Sept. 2010.
• F. Araoka, T. Otani, K. Ishikawa, H. Takezoe. Spectral blue shift via intermolecular interactions in the B2 and B4 phases of a bent-shaped molecule, Phys. Rev. E,, Vol. 82, 041718-1-5, Sept. 2010.
• Ken Ishikawa, K. L Sandhya, A. D. L. Chandani-Perrera, Atsuo Fukuda, J. K. Vij. Antiferroelectric and ferroelectric orderings in frustrated chiral tilted smectics and a continuous change from anticlinic SmCA to synclinic SmC, Euro Phys. Lett, Vol. 90, pp. 56005, July 2010.
• HIDEO TAKEZOE, JIN KI KIM, Van Khoa Le, Dhara Surajit, Ken Ishikawa, Fumito Araoka. Heat-driven and electric-field-driven bistable devices using dye-doped nematic liquid crystals, J. Appl. Phys., Vol. 107, pp. 123108-1-4., June 2010.
• HIDEO TAKEZOE, WONHOE KOO, Hongje Yun, Fumito Araoka, Ken Ishikawa, Soon Moon Jeong, T. TOYOOKA, S Nishimura. Spontaneously buckled microlens for improving outcoupled organic electroluminescence, Appl. Phys. Exp., Vol. 3, pp. 082501-1-3., June 2010.
• H. Choi, J. Kim, S. Nishimura, T. Toyooka, F. Araoka, K. Ishikawa, J. W. Wu, H. Takezoe. Broad-band Cavity-mode Lasing from Dye-doped Nematic Liquid Crystal Sandwiched by Broad-band, ADVANCED MATERIALS, Vol. 22, pp. 2680-2684., June 2010.
• HIDEO TAKEZOE, Reiri Kougo, Fumito Araoka, Y Uchida, R. Tamura, Ken Ishikawa. Second-harmonic generation in a paramagnetic all-organic chiral smectic liquid crystal, Appl. Phys. Exp., Vol. 3 ., p. 041701, Apr. 2010.
• HIDEO TAKEZOE, Masanao Goto, Ken Ishikawa. Carrier transport simulation in a model liquid crystalline system with the biaxial Gay–Berne potential, J. Chem. Phys., Vol. 132, pp. 054506-1-10., Feb. 2010.
• HIDEO TAKEZOE, WONHOE KOO, Soon Moon Jeong, Fumito Araoka, Ken Ishikawa, S Nishimura, T. TOYOOKA. Light extraction from organic light emitting diodes enhanced by spontaneously formed buckles, Nature Photonics, Vol. 4, pp. 222-225., Feb. 2010.
• HIDEO TAKEZOE, Lingfeng GUO, Dhara Surajit, B. K. Sadashiva, S. Radhika, R. Pratibha, YOSHIO SHIMBO, Fumito Araoka, Ken Ishikawa. Electrooptic and Dielectric Characterization of SmAdPA Phase of a Asymmetric Bent Core Liquid Crystal, Phys. Rev. E ., Vol. 81, pp. 011703-1-6, Jan. 2010.
• Hiroki Nagayama, Sanjay Kumar Varshney, Masanao Goto, Fumito Araoka, Ken Ishikawa, Veena Prasad, Hideo Takezoe. Spontaneous Deracemization of Disc-like Molecules in the Columnar Phase, Angewandte Chemie International Edition, Vol. 49, p. 445, Jan. 2010.
• Soon Moon Jeong, Jin Ki Kim, Yoshio Shimbo, Fumito Araoka, Surajit Dhara, Na Young Ha, Ken Ishikawa, Hideo Takezoe. Perfluoropolymer surface for shock-free homeotropic alignment of smectic liquid crystals, Adv. Mater., 22, 34, Jan. 2010.
• Yoon, D.K., Deb, R., Chen, D., Körblova, E., Shao, R., Ken Ishikawa, Rao, N.V.S., Walba, D.M., Smalyukh, I.I., Clark, N.A.. Organization of the polarization splay modulated smectic liquid crystal phase by topographic confinement, Proceedings of the National Academy of Sciences of the United States of America, Vol. 107, No. 50, pp. 21311-21315, 2010.
• HIDEO TAKEZOE, G. Lee, Hyeoncheol Jeong, Fumito Araoka, K.-T. Kang, Ken Ishikawa, M. Cepic. Anchoring transition of bent-rod dimer liquid crystals on different surfaces, Liq. Cryst., Vol. 37, pp. 883-892., 2010.
• HIDEO TAKEZOE, Kinga Gomola, Lingfeng GUO, Fumito Araoka, Ken Ishikawa, Damian Pociecha. Optically Uniaxial Antiferroelectric Smectic Phase in Asymmetrical Bent-core Compounds Containing 3-Aminophenol Central Unit, J. Mater. Chem., Vol. 20, pp. 7944-7952., 2010.
• HIDEO TAKEZOE, H. Choi, J. Kim, RYO NISHIMURA, T. TOYOOKA, Fumito Araoka, Ken Ishikawa, J. W. Wu. Broad-band Cavity-mode Lasing from Dye-doped Nematic Liquid Crystal Sandwiched by Broad-band Cholesteric Liquid Crystal Bragg Reflectors, Adv. Mater, 2010.
• HIDEO TAKEZOE, Dhara Surajit, Ken Ishikawa. Thermotropic Uniaxial Nematic Liquid Crystal with Half-Strength Disclinations: Defect-Antidefect Production and Correlation, J. Phys. Condens. Mater. 21 (2009) 505103-1-5., 21, 505103-1-5., Dec. 2009.
• K. V. Le, F. Araoka, K. Fodor-Csorba, K. Ishikawa, H. Takezoe. Flexoelectric effect in a bent-core mesogen, Liq. Cryst., Vol. 36, p. 1119, Nov. 2009.
• J. K. Kim, F. Araoka, S. M. Jeong, S. Dhara, K. Ishikawa, H. Takezoe. Bistable device using anchoring transition of nematic liquid crystals, Appl. Phys. Lett., vol. 95, p. 063505, Sept. 2009.
• T. Otani, F. Araoka, K. Ishikawa, H. Takezoe. Enhanced Optical Activity by Achiral Rod-like Molecules Nano-segregated in the B4 Structure of Achiral Bent-core Molecules, J. Am. Chem. Soc., vol. 131, p. 12368, July 2009.
• HIDEO TAKEZOE, Dhara Surajit, JIN KI KIM, Soon Moon Jeong, Reiri Kougo, Fumito Araoka, Ken Ishikawa. Anchoring transition of transversely polar liquid-crystal molecules on perfluoropolymer surfaces, Phys. Rev. E, Vol. 79, pp. 060701(R)-1-4., June 2009.
• Surajit Dhara, Jin Ki Kim, Soon Moon Jeong, 向後 伶利, 荒岡 史人, 石川 謙, 竹添 秀男. Anchoring transitions of transversely polar liquid-crystal molecules on perfluoropolymer surfaces, Phys. Rev. E, 79, 060701(R)-1-4., June 2009.
• K. Shibata, Y. Watakabe, K. Ishikawa, H. Takezoe, H. Wada, T. Mori. (Tetrathiafulvalene)tetracyanoquinodimethane as a contact material for n-channel and ambipolar organic transistors, Appl. Phys. Exp., Vol. 1, pp. 051801-1-3, June 2009.
• S. Dhara, J. K. Kim, S. M. Jeong, R. Kogo, F. Araoka, K. Ishikawa, H. Takezoe. Anchoring transition of transversely polar liquid-crystal molecules on perfluoropolymer surfaces, Phys. Rev. E, vol. 79, p. 060701(R), May 2009.
• Masanao Goto, Yoshimasa Bando, takashi shirahata, Takehiko Mori, HIDEO TAKEZOE, Ken Ishikawa. High Carrier Mobility in Mesophase of a Dithienothiophene Derivative, Appl. Phys. Exp., Vol. 2, No. 4, p. 041502, Apr. 2009.
• HIDEO TAKEZOE, T. Yoshino, K. Shibata, H. Wada, Yoshimasa Bando, Ken Ishikawa, Takehiko Mori. Organic field-effect transistors based on solution-processible debenzotetrathiafulvalene derivatives, Chem. Lett. 38 (2009) 200-201., Vol. 38, pp. 200-201., Jan. 2009.
• Kinga Gomola, HIDEO TAKEZOE, Lingfeng GUO, Ewa Gorecka, Damian Pociecha, J. Mieczkowski, Ken Ishikawa. First symmetrical banana compounds exhibiting SmAPR mesophase and unique transition between two orthogonal polar phases, Chem. Commun. 2009, 6592-6594., # 2009, p. 6592-6594., 2009.
• H. Wada, T. Taguchi, B. Noda, T. Kambayashi, T. Mori, K. Ishikawa, H. Takezoe. Air stability of n-channel organic transistors based on Nickel coordination compounds, Org. Elect., Vol. 8, pp. 759-766., July 2008.
• K. Sonoyama, Y. Takanishi, K. Ishikawa, H. Takezoe. Lowering Threshold by Energy Transfer between Two Dyes in Cholesteric Liquid Crystal Distributed Feedback Lasers, Appl. Exp. Lett., Vol. 1, pp. 032002-1-3, July 2008.
• S. M. Jeong, N. Y. Ha, F. Araoka, K. Ishikawa, H. Takezoe. Electro-tunable polarization of surface-emitting distributed feedback laser with nematic liquid crystals, Appl. Phys. Lett, Vol. 92, pp. 171105-1-3., June 2008.
• S. M. Jeong, F. Araoka, Y. Machida, K. Ishikawa, H. Takezoe. Enhancement of normally-directed light outcoupling from organic light-emitting diodes using nano-imprinted low-refractive-index layer, Appl. Phys. Lett., Vol. 92, pp. 083307-083309, June 2008.
• N. Y. Ha, Y. Ohtsuka, S. M. Jeong, S. Nishimura, G. Suzaki, Y. Takanishi, K. Ishikawa, H. Takezoe. Fabrication of a simultaneous red-green-blue reflector using single-pitched cholesteric liquid crystals, Nature Materials, Vol. 7, pp. 43-47, June 2008.
• N. Y. Ha, S. M. Jeong, S. Nishimura, G. Suzaki, K. Ishikawa, H. Takezoe. Simultaneous red, green, and blue lasing emissions in a single-pitched cholesteric liquid crystal system, Adv. Mater., Vol. 20, pp. 2503-2507, June 2008.
• T. Manabe, K. Sonoyama, Y. Takanishi, K. Ishikawa, H. Takezoe. Toward practical application of cholesteric liquid crystals to tunable lasers, J. Mater. Chem, Vol. 18, pp. 3040-3043, June 2008.
• S. Tanaka, S. Dhara, B. K. Sadashiva, Y. Shimbo, Y. Takanishi, F. Araoka, K. Ishikawa, H. Takezoe. Alternative twist structures formed by electroconvection in the nematic phase of an achiral bent-core meolecule, Phys. Rev. E,, Vol. 77, pp. 041708-1-5, June 2008.
• S. Dhara, F. Araoka, M. Lee, K. V. Le, L. Guo, B. K. Sadashiva, K. Song, K. Ishikawa, H. Takezoe. Kerr constant and third-order nonlinear optic susceptibility measurements in a liquid crystal composed of bent-shaped molecules, Phys. Rev. E, Vol. 78, pp. 050701(R) 1-4., June 2008.
• S. M. Jeong, N. Y. Ha, M. G. Chee, F. Araoka, K. Ishikawa, H. Takezoe. Enhanced linearly-polarized lasing emission from nano-imprinted surface-emitting distributed feedback laser based on polymeric liquid crystals, Appl. Phys. Lett, Vol. 93, pp. 221101-1-3, June 2008.
• S. M. Jeong, F. Araoka, Y. Machida, Y. Takanishi, K. Ishikawa, H. Takezoe. Enhancement of Light Extraction from Organic Light-Emitting Diodes with Two-Dimensional Hexagonally Nano-Imprinted Periodic Structures Using Sequential Surface Relief Grating, Jpn. J. Appl. Phys., Vol. 47, pp. 4566-4571, June 2008.
• K. Shibata, Y. Watakabe, K. Ishikawa, H. Takezoe, H. Wada, T. Mori. (Tetrathiafulvalene)(tetracyanoquinodimethane) as a Contact Material for n-Channel and Ambipolar Organic Transistors, Appl. Phys. Exp., IPAP, Vol. 1, No. 5, p. 051801, May 2008.  公式リンク  
  
• Koji Shibata, Ken Ishikawa, HIDEO TAKEZOE, TAKEHIKO MORI. Contact Resistance of Dibenzotetrathiafulvalene-Based Organic Transistors with Metal and Organic Electrodes, Appl. Phys. Lett., Vol. 92, p. 03305, Jan. 2008.  公式リンク  
  
• Y. Wang, T. Manabe, Y. Takanishi, K. Ishikawa, G. Shao, A. Orita, J. Otera, H. Takezoe. ependence of lasing threshold power on excitation wavelength in dye-doped cholesteric liquid crystals, Opt. Commun., Vol. 280, pp. 408-411., July 2007.
• Y. Okada, S. Matsumoto, F. Araoka, M. Goto, Y. Takanishi, K. Ishikawa, S. Nakahara, K. Kishikawa, H. Takezoe. Three relaxation processes from an electric-field-induced polar structure in a columnar liquid crystalline urea derivative, Phys. Rev.E, Vol. 76, pp. 041701-1-6, July 2007.
• , Y, Niigawa, K. Nishida, W. J. Kim, S. K. Lee, S. Heo, J. G. Lee, F. Araoka, Y. Takanishi, K. Ishikawa, K.-T. Kang, M. Cepic, H. Takezoe. Polar structures in the binary mixtures of bent-core liquid crystals showing ferroelectric and antiferroelectric B2 phases, Phys. Rev. E, Vol. 76, pp. 031702-1-7, July 2007.
• Ken Ishikawa, Y. Takanishi, N. Tomoe, N. Y. Ha, T. Toyooka, S. Nishimura, K. Ishikawa, H. Takezoe. Defect-mode lasing from a three-layered helical cholesteric liquid crystal structure, Jpn. J. Appl. Phys., Vol. 46, pp. 3510-3513, July 2007.
• Y. Hoshino, S.-W. Choi, T. Izumi, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Chirality induced by circularly polarized light in liquid crystalline twin dimmers with azo linkages, Mol. Cryst. Liq. Cryst., Vol. 465, p. 153-163, July 2007.
• B. Noda, 和田 拓, K. Shibata, T. Yoshino, M. Katsuhara, I. Aoyagi, T. Mori, T. Taguchi, T. Kambayashi, 石川 謙, 竹添 秀男. Crystal structures and transistor properties of phenyl-substituted tetrathiafulvalene derivatives, Nanotechnology, Vol. 18, pp. 424009-1-10, July 2007.
• K. Sonoyama, 高西 陽一, 石川 謙, 竹添 秀男. Position-sensitive cholesteric liquid crystal dye laser covering a full visible range, Jpn. J. Appl. Phys., Vol. 46, pp. L874-L876, July 2007.
• S.-W.Choi, Sungmin Kang, yoichi takanishi, Ken Ishikawa, junji watanabe, HIDEO TAKEZOE. Intrinsic chiral domains enantioselectively segregated from twisted nematic cells of bent core mesogens, Chirality, Wiley Interscience, Vol. 19, pp. 250-254, May 2007.  公式リンク  
  
• Soon Moon Jeong, Youko Ohtsuka, Na Young Ha, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe. Highly circularly polarized electroluminescence from organic light-emitting diodes with wide-band reflective polymeric cholesteric liquid crystal films, Appl. Phys. Lett., Vol. 90, pp. 211106-211108, 2007.
• Soon Moon Jeonga, Yoichi Takanishia, Ken Ishikawaa, Suzushi Nishimurab, Goroh Suzakib, Hideo Takezoe. Sharply directed emission in microcavity organic light-emitting diodes with a cholesteric liquid crystal film, Optics Communications, Vol. 273, pp. 167-172, 2007.
• Suk-Won Choi, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe. Defect-free twisted-nematic cells with low pretilt using chiral polyimide surfaces, Appl. Phys. Lett, Vol. 90, 033115-33117, 2007.
• Na Young Ha, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe. Simultaneous RGB reflections from single-pitched cholesteric liquid crystal films with Fibonaccian defects, Optics Express, Vol. 15, 1024-1029, 2007.
• Koji Shibata, Hiroshi Wada, Ken Ishikawa, Hideo Takezoe, Takehiko Mori. (Tetrathiafulvalene)(tetracyanoquinodimethane) as a low-contact-resistance electrode for organic transistors, Appl. Phys. Lett, Vol. 90, pp. 193509, 2007.
• Yoshio Aoki, Takeyoshi Watabe, Takuji Hirose, Ken Ishikawa. Noble Orientation Change with Temperature in Nematic Liquid Crystalline Mixtures, Chemistry Letters, Vol. 36, pp. 380-381, 2007.
• Soon Moon Jeong, Na Young Ha, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe. Defect mode lasing from a double-layered dye-doped polymeric cholesteric liquid crystal films with a thin rubbed defect layer, Appl. Phys. Lett, Vol. 90, pp. 261108-261110, 2007.
• Yoshinori Okada, Fumito Araoka, Yoichi Takanishi, Ken Ishikawa, Shoichiro Nakahara, Keiki Kishikawa, Hyunhee Choi, Jeong Weon Wu, Hideo Takezoe. Electro-optic Kerr effect in the isotropic phase above the columnar phase of a urea derivative, Phys. Rev, Vol. E 75, pp. -4P, 2007.
• S. W. Choi, S. Kang, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Intrinsic Chirality in a Bent-core Mesogen Induced by Extrinsic Chiral Structures, Angew. Chem. Int, Vol. 45, No. 6, 6503-6506, Oct. 2006.
• S.-W. Choi, S. Matsumoto, Y. Takanishi, K. Ishikawa, I. Nishiyama, J. Kawamura, H.Takada, H. Takezoe. Electrically tunable binary liquid crystal grating device consisting of homeotropic monodomain and non-aligned multidomain geometry, Org. Elec, Vol. 7, No. 5, pp. 440-444, Oct. 2006.
• suk-won choi, Sungmin Kang, ken ishikawa, yoichi, junji watanabe, H. Takezoe. Intrinsic Chirality in a Bent-core Mesogen Induced by Extrinsic Chiral Structures, Angew. Chem. Int. Ed., Vol. 45, pp. 6503-6506, Sept. 2006.
• Y. Takanishi, M. Toshimitsu, M. Nakata, N. Takada, T. Izumi, K. Ishikawa, H. Takezoe, J.Watanabe, Y. Takahashi, A. Iida. Frustrated smectic layer structures in bent-shaped dimer liquid crystals as studied by X-ray microbeam diffraction, Phys. Rev., Vol. E 74, 051703-1-10., 2006.
• S.-W. Choi, S. Matsumoto, Y. Takanishi, K. Ishikawa, I. Nishiyama, J. Kawamura, H.Takada, H. Takezoe. Electrically tunable binary liquid crystal grating device consisting of homeotropic monodomain and non-aligned multidomain geometry, Org. Elec, Vol. 7, No. 5, 295-299, 2006.
• T. Kambayashi, H. Wada, M. Goto, T. Mori, B. Park, H. Takezoe, K. Ishikawa. Enhancement of conductivity in poly (3-hexylthio-phene) films prepared by spin-coating from blended solutions with small molecules, Org. Elec, Vol. 7, No. 5, pp. 440-444, 2006.
• S. M. Jeong, K. Sonoyama, Y. Takanishi, K. Ishikawa, H. Takezoe. Optical Cavity with a Double-Layered Cholesteric Liquid Crystal Mirror and its Prospective Application to Solid State Laser, Appl. Phys. Lett, Vol. 89, 241116-1-3, 2006.
• Y. Shimbo, E. Gorecka, D. Pochiecha, F. Araoka, M. Goto, Y. Takanishi, K. Ishikawa, J.Mieczkowski, K. Gomola, H. Takezoe. Electric-field-induced polar biaxial order in a non-tilted smectic phase of an asymmetric bewnt-core liquid crystal, Phys. Rev. Lett, Vol. 97, pp. 113901-1-4, 2006.
• M. H. Song, B. Park, S. Nishimura, T. Toyooka, I. J. Chung, Y. Takanishi, K. ishikawa, H. Takezoe. Electro-tunable non-reciprocal laser emission in a liquid crystal photonic device, Adv. Func. Mater, Vol. 16, 1793-1798, 2006.
• K. Nishida, M. Cepic, W.- J. Kim. S.-K. Lee, S. Heo, J.-G. Lee, Y. Takanishi, K. Ishikawa, K.-T. Kang, J. Watanabe, H. Takezoe. Interpretation of the odd-even behavior for the emergence of ferroelectricity and antiferroelectricity in bent-core mesogens, Phys. Rev. E, Vol. 74, 021704-1-7., 2006.
• S. M. Jeong, Y. Takanishi, K. Ishikawa, H. Takezoe. Flexible microcavity organic light-emitting diodes with wide-band organic distributed Bragg reflector, Jpn. J. Appl. Phys., Vol. 45, pp. L737-L739., 2006.
• S.-W. Choi, K. Fukuda, S. Nakahara, K. Kishikawa, Y. Takanishi, K. Ishikawa, J. Watanabeand H. Takezoe. Amplification of twisting power in chiral mesophase by introducing achiral rod-like compound with ester group, Chem. Lett., Vol. 35, pp. 896-897., 2006.
• K. V. Le, K. Amemiya, Y. Takanishi, K. Ishikawa, H. Takezoe. Determination of Pretilt Angle of Discotic Nematic Liquid Crystal, Jpn. J. Appl. Phys, Vol. 45, 5149-5150, 2006.
• S. Matsumoto, M. Goto, S.-W. Choi, Y. Takanishi, K. Ishikawa, H. Takezoe, G. Kawamura, I. Nishiyama, H. Takada. Phase grating using a ferroelectric liquid crystal mixture with a photocurable liquid crystal, J. Appl. Phys., Vol. 99, pp. 113709-1-5, 2006.
• M. H. Song, B. Park, Y. Takanishi, K. Ishikawa, S. Nishimura, T. Toyooka, H. Takezoe. Simple electro-tunable optical diode using photonic and anisotropic liquid crystal films, Thin Solid Films, Vol. 509, 49-52., 2006.
• E. Lim, B.-J. Jung, H.-K. Shim, T. Taguchi, B. Noda, T. Kambayashi, T. Mori, K. Ishikawa, H. Takezoe, L.-M. Do. Nanoscale thin-film morphologies and field-effect transistor behavior of oligothiophene derivatives, Org. Elect., Vol. 7, No. 121-131, 2006.
• T. Taguchi, H. Wada, T. Kambayashi, B. Noda, M. Goto, T. Mori, K. Ishikawa, H.Takezoe. Comparison of p-type and n-type organic field-effect transistors using nickel coordination compounds, Chem. Phys. Lett, Vol. 421, pp. 395-398., 2006.
• K. Nishida, W. J. Kim, S. K. Lee, S. Heo, J. G. Lee, K.-T. Kang, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Longer-Terminal-Chain-Sensitive Phase Structures in Mixtures and Nonsymmetric Molecules of Bent-Core Mesogens, Jpn. J. Appl. Phys, Vol. 45, L329 - L331., 2006.
• Y. Shimbo, Y. Takanishi, K. Ishikawa, E. Gorecka, D. Pociecha, J. Mieczkowski, K.Gomola, H. Takezoe. Ideal Liquid Crystal Display Mode Using Achiral Banana-Shaped Liquid Crystals, Jpn. J. Appl. Phys., Vol. 45, pp. L282-L284, 2006.
• S.-W. Choi, T. Fukuda, Y Takanishi, K. Ishikawa, H. Takezoe. Light-Induced Macroscopic Chirality in Thin Films of Achiral Main-Chain Amorphous Polyazourea Syster, Jpn. J. Appl. Phys., Vol. 45, pp. 447-450, 2006.
• M. H. Song, N. Y. Ha, K. Amemiya, B. Park, Y. Takanishi, K. Ishikawa, J. W. Wu, S. Nishimura, T. Toyooka, H. Takezoe. Defect-Mode Lasing with Lowered Threshold in a Three-Layered Hetero-Cholesteric Liquid-Crystal Strucuture, Adv. Mater., Vol. 18, pp. 193-197, 2006.
• T. Kambayashi, M. Goto, M. Ohuji, T. Mori, H. Takezoe, K. Ishikawa. Doping Effect on Surface Roughness of Organic Semiconductor Thin Films, Jpn. J. Appl. Phys, Vol. 45, 526-529., 2006.
• S.-W. Choi, T. Izumi, Y. Hoshino, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Cricular-polarization-induced enantiomeric excess in an achiral bent-shaped liquid crystal, Angew. Chem. Int. Ed, Vol. 45, pp. 1382-1385., 2006.
• S.-W. Choi, N. Y. Ha, K. Shiromo, N. V. S. Rao, M. Kr. Paul, T. Toyooka, S. Nishimura, J.W. Wu, B. Park, Y. Takanishi, K. Ishikawa, H. Takezoe. Photoinduced Circular Anisotropy in a Photochromic W-shaped-molecule-doped PolymericLiquid Crystal Film, Phys. Rev. E, Vol. 73, pp. 021702-1-6., 2006.
• M. Katsuhara, I. Aoyagi, H. Nakajima, T. Mori, T. Kambayashi, M. Ohfuji, Y. Takanishi, K.Ishikawa, H. Takezoe, H. Hosono. Organic Field-Effect Transistors Based on New TTF-based Liquid Crystalline Materials, Synth. Metals, Vol. 149, pp. 219-223, 2005.
• M. Ofuji, K. Ishikawa, H. Takezoe, K. Inaba, K. Omote. Crystallite Size Effect on the Hole Mobility of Uniaxially Aligned Copper PhthalocyanineThin-Film Field-Effect Transistors, Appl. Phys. Lett., Vol. 86, pp. 062114-062116, 2005.
• T. Kambayashi, H. Ohta, H. Hoshi, M. Hirano, H. Hosono, H. Takezoe, K. Ishikawa. Epitaxial Growth of a Copper-Phthalocyanine on a Transparent Conductive Substrate with anAtomically Flat Surface, Cryst. Growth & Design, Vol. 5, pp. 143-146, 2005.
• M. H. Song, K.-C. Shin, B. Park, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Effect of Thick Anisotropic NLC Layer on Lasing in Polymeric Cholesteric Liquid Crystals, J. Kor. Phys. Soc., Vol. 46, pp. S128-S131., 2005.
• K. Amemiya, T. Nagata, M. H. Song, Y. Takanishi, K. Ishikawa, S. Nishimura, T. Toyooka, H. Takezoe. Enhancement of Laser Emission Intensity in Dye-Doped Liquid Crystals with Single-Output Window, Jpn. J. Appl. Phys, Vol. 44, 3748-3750., 2005.
• Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe, M. Tamashita, K. Kawase. Terahertz Spectroscopy in Smectic Phases of a Bent-Core Molecule, Phys. Rev, Vol. E71, 061701-1-3., 2005.
• T. Kambayashi, M. Ofuji, S. Uno, H. Hoshi, H. Takezoe, K. Ishikawa. Heteroepitaxial Structure of F16VOPc/VOPc Fabricated on a KBr Substrate, Jpn. J. Appl. Phys, Vol. 44, L879-881, 2005.
• Y. Okada, S. Matsumoto, Y. Takanishi, K. Ishikawa, S. Nakahara, K. Kishikawa, H. Takezoe. Polarization Switching in a columnar Liquid Crystalline Urea as Studied by Optical Second-Harmonic Generation Interferometry, Phys. Rev., Vol. E72, pp. 020701(R)-1-4., 2005.
• Y. Takanishi, G. J. Shin, J. C. S. Jung, W. Choi, K. Ishikawa, J. Watanabe, H. Takezoe, P.Toledano. Observation of Very Large Chiral Domains in a Liquid Crystal Phase Formed by Mixtures of Achiral Bent-Core and Rod Molecules, J. Mater. Chem, Vol. 15, 4020-4024., 2005.
• A. Iida, Y. Takahashi, Y. Takanishi, M. Nakata, K. Ishikawa, H. Takezoe. Dynamic and Micoscopic X-ray characterization of a Compound Chevron Layer in Electroclinic Liquid Crystals, Liq.Cryst, Vol. 32, pp. 717-726, 2005.
• K. Amemiya, M. H. Song, Y. Takanishi, K. Ishikawa, S. Nishimura, T. Toyooka, H. Takezoe. Lowering the Lasing Threshold by Introducing Cholesteric Liquid Crystal Films to Dye-Doped Cholesteric Liquid Crystal Cell Surfaces, Jpn. J. Appl. Phys, Vol. 44, pp. 7966-7971, 2005.
• I. Miyake, Y. Takanishi, N. V. S. Rao, M. Kr. Paul, K. Ishikawa, H. Takezoe. Novel chiral filament in an achiral W-shaped liquid crystalline compound, J. Mater. Chem., Vol. 15, pp. 4688-4694., 2005.
• M. H. Song, B. Park, Y. Takanishi, K. Ishikawa, S. Nishimura, T. Toyooka, H. Takezoe. Lasing from Thick Anisotropic Layer Sandwiched between Polymeric Cholesteric Liquid Crystal Films, Jpn. J. Appl. Phys, Vol. 44, pp. 8165-8167., 2005.
• K. Kumazawa, M. Nakata, F. Araoka, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Important Role Played by Interlayer Steric Interaction for the Emergence of Ferroelectric Phase inBent-core Mesogens, J. Mater. Chem., Vol. 14, pp. 157-164., 2005.
• J. Hwang, M. H. Song, B. Park, S. Nishimura, T. Toyooka, J. W. Wu, Y. Takanishi, K. Ishikawa, H. Takezoe. Electro-Tunable Optical Diode using an Anisotropic Layer Sandwiched by Hetero-Photonic Bandgap Cholesteric Liquid Crystal Films, Nature Materials, Vol. 4, pp. 383-387, 2005.
• S. Uno, H. Hoshi, H. Takezoe, K. Ishikawa. Determination Factor of Lattice Structure in Hexadecafluorovanadylphthalocyanine EpitaxiallyGrown on Alkaki-Halide Substrates, Jpn. J. Appl. Phys, Vol. 44, L461-L464, 2005.
• K. Shiromo, D. A. Sahade, T. Oda, T. Nihira, Y. Takanishi, K. Ishikawa, H. Takezoe. Finite Enantiomeric Excess Nucleated in an Achiral Banana Mesogen by Chiral AlignmentSurfaces, Angew. Chemie. Intn. Ed., Vol. 44, No. 1948-1951., pp. 2005, 2005.
• B. Noda, M. Katsuhara, I. Aoyagi, T. Mori, T. Taguchi, T. Kambayashi, K. Ishikawa, H.Takezoe. Organic Field-Effect Transistor Based on Biphenyl Substituted TTF, Chem. Lett, Vol. 34, pp. 392-393., 2005.
• T. Shioda, Y. Odada, Y. Takanishi, K. Ishikawa, B. Park, H. Takezoe. Orientation of Liquid Crystal Molecules Evaporated onto Rubbed and Photoaligned PolymerSurfaces, Jpn. J. Appl. Phys., Vol. 44, pp. 3103-3110., 2005.
• H. Ohta, T. Kanbayashi, K. Nomura, M. Hirano, K. Ishikawa, H. Takezoe, H. Hosono. Transparent Organic Thin-Film Transistor with a Laterally Grown Non-Lpanar PhthalocyanineChannel, Adv. Mater, Vol. 16, pp. 779-783, 2004.
• K. Amemiya, K.-C. Shin, Y. Takanishi, K. Ishikawa, R. Azumi, H. Takezoe. Lasing in Cholesteric Liquid Crystals Doped with Oligothiophene Derivatives, Jpn. J. Appl. Phys., Vol. 43, 6142-6144, 2004.
• K. Ghosh, Y. Takanishi, K. Ishikawa, H. Takezoe. Electrically Controllable Polarization-Dependent Phase Grating from Photocurable Liquid Crystals, J. Appl. Phys., Vol. 95, pp. 5241-5243, 2004.
• Ken Ishikawa. Advantages of Highly Ordered Polymer-Dyes for Lasing in Chiral Nematic Liquid Crystals, Jpn. J. Appl. Phys., Vol. 43, pp. 631-636, 2004.
• Ken Ishikawa. Effect of Phase Retardation on Defect-Mode Lasing in Polymeric Cholesteric Liquid Crystals, Adv. Mater, Vol. 16, pp. 779-783, 2004.
• T. Nagata, T. Ohta, M.-H. Song, Y. Takanishi, K. Ishikawa, J. Watanabe, T. Toyooka, S. Nishimura, H. Takezoe. Anomalously Directed Amplified Spontaneous Emission from a Wedge-Shaped Cell Sandwichedby Cholesteric Liquid Crystal Films, Jpn. J. Appl. Phys., Vol. 43, L1220-L1222, 2004.
• K. Ghosh, S.-W. Choi, Y. Takanishi, B. Park, K. Ishikawa, Y. Ono, J. Kawamura, H.Takezoe. Polarization-Independent Electrically Tunable Phase grating Fabricated from Ultraviolet-CurableLiquid CrystalsA., J. Appl. Phys., Vol. 96, pp. 5909-5911., 2004.
• Y. Takahashi, A. Iida, Y. Takanishi, M. Nakata, K. Ishikawa, H. Takezoe. Temperature and Electric Field Dependences of the Local Layer Structure in Anti-FerroelectricLiquid Crystals Measured by X-Ray Micro-Diffraction, Ferroelectrics, Vol. 311, pp. 41-50, 2004.
• Y. Takanishi, S. Yoshida, T. Ogasawara, K. Ishikawa, H. Takezoe, K. Ema, H. Yao, A. Yoshizawa, T. Kusumoto, T. Hiyama. Cubic and Blue Phases in a Fluorine-Containing Dichiral Compound, Mol. Cryst. Liq. Cryst., Vol. 400, pp. 133-147., 2003.
• Y. Takanishi, T. Ogasawara, K. Ishikawa, H. Takezoe, J. Watanabe, Y. Takahashi, A. Iida. Local Layer Structures in Circular Domains of an Achiral Bent-Core Mesogen observed by X-Ray Microbeam Diffraction, Phys. Rev. E, Vol. 68, pp. 011706-1-5, 2003.
• H. Ohta, T. Kambayashi, M. Hirano, H. Hoshi, K. Ishikawa, H. Takezoe, H. Hosono. Application of Transparent Conductive Substrate with an Atomically Flat and Stepped Surface to Lateral Growth of an Organic Molecule: Vanadyl Phtalocyanine, Adv. Mater, Vol. 15, pp. 1258-1261, 2003.
• H. Hoshi, K. Ishikawa, H. Takezoe. Optical Second-Harmonic Generation Enhanced by a Twist Defect in Ferroelectric Liquid Crystals, Phys. Rev., Vol. 68, pp. 020701(R) 1-3., 2003.
• K. Yokota, T. Shioda, M. Nakata, Y. Takanishi, K. Ishikawa, H. Takezoe, M. Ishitobi, C. Sekine. Experimental Determination of Molecular Polarizability Anisotropy of Nematogens by Depolarized Rayleigh Light Scattering, Liq. Cryst., Vol. 30, pp. 697-700, 2003.
• D.-H. Chung, Y. Takanishi, K. Ishikawa, C.-J. Yu, S.-D. Lee, H. Takeoze. Alignment Control of a Nematic Liquid Crystal on a Doubly Treated Substrate, Jpn. J. Appl. Phys, Vol. 42, pp. 1686-1689., 2003.
• F. Araoka, K.-C. Shin, Y. Takanishi, K. Ishikawa, H. Takezoe, Z. Zhu, T. M. Swager. How Doping a Cholesteric Liquid Crystal with Polymeric Dye Improves an Order Parameter and Makes Possible Low Threshold Lasing, J. Appl. Phys., Vol. 94, pp. 279-283, 2003.
• S. Suwa, H. Hoshi, Y. Takanishi, K. Ishikawa, H. Takezoe, B. Zeks. Helix Unwinding Process in a Short-Pitch Ferroelectric Liquid Crystal Mixture Studied by Conoscopy, Jpn. J. Appl. Phys., Vol. 42, pp. 1335-1337, 2003.
• Y. Takahashi, A. Iida, Y. Takanishi, T. Ogasaware, M. Nakata, K. Ishikawa, H. Takezoe. Dynamic Local-Layer Response of Surface-Stabilized Ferroelectric Liquid Crystals to a High Electric Field by Time-Resolved X-Ray Microdiffraction, Phys. Rev. E, Vol. 67, 051706-1-10, 2003.
• M. Ofuji, K. Inaba, K. Omote, H. Hoshi. Y.Takanishi, K. Ishikawa, H. Takezoe. Grwoth Process of Vacuum Deposited Copper Phthalocyanine Thin Films on Rubbing-Treated Substrates, Jpn. J. Appl. Phys., Vol. 42, No. 12, pp. ***-***, 2003.
• S. Suwa, Y. Takanishi, H. Hoshi, K. Ishikawa, H. Takezoe. Helix Unwinding Process in the Chiral Smectic C Phase of MHPOBC as Observed by Conoscopy, Liq. Cryst, Vol. 30, pp. 499-505, 2003.
• N. V. S. Rao, M. Kr. Paul, I. Miyake, Y. Takanishi, Ken I., H. Takezoe. A novel smectic liquid crystalline phase exhibited by W-shaped molecules, J. Mater. Chem., Vol. 13, 2880-2884, 2003.
• Masato Ofuji, Katsuhiko Inaba, Kazuhiko Omote, Hajime Hoshi, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe. Grazing Incidence In-Plane X-Ray Diffraction Study on Oriented Copper Phthalocyanine Thin Films, Jpn.J. Apple. Phys., Vol. 41, pp. 5467-5471, 2002.
• S. Shibahara, J. Yamamoto, Y. Takanishi, K. Ishikawa, H. Takezoe. Layer Compression Modulus in Smectic Liquid Crystals, J. Phys. Soc. Jpn, Vol. 71, pp. 802-807, 2002.
• J. Matsushima, Y. Takanishi, K. Ishikawa, H. Takezoe, A. Fukuda, C. S. Park, W. G. Jang, K. H. Kim, J. E. Maclennan, M. A. Glaserr, N. A. Clark, K. Takahashi. Transition Moment Orientation and Rotational Bias of Three Carbonyl Groups in Large- Polarization FLCs Observed by Polarized FT-IR, Liq. Cryst., Vol. 29, pp. 27-37, 2002.
• T. Sakai, K. Ishikawa, H. Takezoe. Orientational Relationship among Main and Side Chains of a Polyimide Alignment Layer, Liquid Crystals Monolayer and Bulk Pretilt Angle, Liq. Cryst., Vol. 29, pp. 47-55., 2002.
• T. Shioda, Y. Okada, D.-H. Chung, .Y. Takanishi, K. Ishikawa, .B. Park, H. Takezoe. Liquid Crystals Align Liquid Crystals, Jpn. J. Appl. Phys., Vol. 41, L266-L268., 2002.
• K.-C. Shin, H. Hoshi, D.-H. Chung, K. Ishikawa, H. Takezoe. Enhanced Second-Harmonic Generation by Use of the Photon ic Effect in a Ferroelectric Smectic C* Liquid Crystal, Opt. Lett., Vol. 27, pp. 128-130, 2002.
• S. Shibahara, J. Yamamoto, Y. Takanishi, K Ishikawa, H. Yokoyama, H. Takezoe. Critical fluctuations near the smectic--hexatic phase transition with anticlinic structure, Phys. Rev., Vol. 65, pp. 030702-1-030702-4, 2002.
• D. R. Link, M. Nakata, Y. Takanishi, K. Ishikawa, H. Takezoe. Flexoelectric polarization in hybrid nematic films, Phys. Rev. E, Vol. 65, pp. 010701-1-010701-4., 2002.
• M. Nakata, D. R. Link, Y. Takanishi, K. Ishikawa, H. Takezoe. Holes and Disclinations in Hybrid Nematic Liquid Crystal Films, Phys. Rev. E, Vol. 64, pp. 021709-1-021709-8, 2001.
• M. Nakata, D. R. Link, F. Araoka, J. Thisayukta, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. A Racemic Layer Structure in a Chiral Bent-Core Ferroelectric Liquid Crystal, Liq. Cryst., Vol. 28, pp. 1301-1308., 2001.
• S. Shibahara, J. Yamamoto, Y. Takanishi, K. Ishikawa, H. Takezoe. Layer Compression Modulus of Chiral Smectic Liquid Crystals Showing V-shaped Switching, Jpn. J. Appl. Phys., Vol. 40, pp. 5026-5029., 2001.
• H. Hoshi, D.-H. Chung, K. Ishikawa, H. Takezoe. Specila Phase Matching of Second-Harmonic Generation in Helical Ferroelectric Liquid Crystal Cells, Phys. Rev. E, Vol. 63, 056610-1-056610-15., 2001.
• H. Hoshi, Ki-Chul Shin, D.-H. Chung, K. Ishikawa, H. Takezoe. Enhancement of Second-Harmonic Generation in Helical Ferroelectric Liquid-Crystal Cells under Oblique Incidence, Jpn. J. Appl. Phys, Vol. 40, L970-L972., 2001.
• D. R. Link, M. Nakata, Y. Takanishi, K. Ishikawa, H. Takezoe. Patterns in Hybrid Nematic Liquid-Crystal Films: Topograpy and Topology, Phys. Rev. Lett, Vol. 87, pp. 195507-1-195507-4., 2001.
• M. Nakata, D. R. Link, J. Thisayukta, Y. Takanishi, K. Ishikawa, J. Watanabe, H. Takezoe. Frustration of Polarity and Chirality in a Binary Mixture of Bent-Core Mesogens, J. Mater. Chem., Vol. 11, 2694-2699., 2001.
• D.-H. Chung, Y. Takanishi, K. Ishikawa, H. Takezoe, B. Park. Visualization of Rubbing Nonuniformity by Double Surface Treatments of Polyimide-Coated Substrate for Liquid Crystal Alignment, Jpn. J. Appl. Phys., Vol. 40, pp. 1342-1344., 2001.
• Y. Takanishi, T. Ogasawara, K. Ishikawa, H. Takezoe, Y. Takahashi, A. Iida. ) X-Ray Analysis of the Layer Structur in the Chiral Smectic Phase Showing V-shaped Switching, Jpn. J. Appl. Phys, Vol. 40, pp. 728-730., 2001.
• S. Ikeda, T. Ogasawara, M. Nakata, Y. Takanishi, K. Ishikawa, H. Takezoe. Molecular Orientation Near the Surface of a Smectic Liquid Crystal Cell Showing V-Shaped Switching by Means of attenuated Total Internal Reflection Ellipsometry, Phys. Rev. E, Vol. 63, 061703-1-061703-8., 2001.
• T. Shioda, D.-H. Chung, Y. Takanishi, K. Ishikawa, B. Park, H. Takezoe. Axial and Polar Orientational Changes by Rubbing/Photoalignment Processes in a Liquid Crystal Alignment layer Studied by Optical second-Harmonic Generation, Jpn. J. Appl. Phys, Vol. 40, 2387-2390., 2001.
• Y. Takahashi, A. Iida, Y. Takanishi, T. Ogasawara, K. Ishikawa, H. Takezoe. Dynamic Behaviour of the Local Layer Structure of Antiferroelectric Liquid Crystals under a High Electric field Measured by Time-resolved Synchrotron X-ray Microbeam diffraction, Jpn. J. Appl. Phys., Vol. 40, pp. 3294-3296, 2001.
• T. Ogasawara, T. Akizuki, Y. Takanishi, K. Ishikawa, H. Takezoe. Simulation of Conoscopic Figures Using 4 x 4 Matrix Method, Mol. Cryst. Liq. Cryst, Vol. 362, 255-267., 2001.
• S. Shibahara, J. Yamamoto, Y. Takanishi, K. Ishikawa, H. Yokoyama, H. Takezoe. Observation of a Soft Smectic Liquid-Crystal Phase in a Mixture Showing V-Shaped Switching, Phys. Rev. E, Vol. 63, 062701-1-062701-4, 2001.
• M. Nakata, Y. Takanishi, K. Ishikawa, H. Takezoe, Y. Aoki, H. Nohira. Stability of Antiferroelectricity Studied Using a Homologous Series of Antiferroelectric Liquid Crystals, Jpn. J. Appl. Phys., Vol. 39, No. 1A/B, pp. L43-L44, 2000.
• T. Manaka, K. Taguchi, K. Ishikawa, H. Takezoe. Highly Aligned alpha-Type Copper Phthalocyanine Formed on Rubbed Polyimide Alignment Layer, Jpn. J. Appl. Phys., Vol. 39, No. 8, pp. 4910-4911, 2000.
• D. Chung, Y. Takanishi, K. Ishikawa, H. Takezoe, B. Park, Y. Jung, H. Hwang, S. Lee, K. Han, S. Jang. Alignment Mechanism of Nematic Liquid Crystal on Rubbed Polymer Surface Studied by Subsequent Processes of Rubbing and Photoalignment, Jpn. J. Appl. Phys., Vol. 39, No. 3A/B, pp. L185-L187, 2000.
• T. Manaka, H. Hoshi, K. Ishikawa, H. Takezoe, S. Koshihara, M. Kira, T. Miyazawa. Large Order-Disorder Transition in Polydihexylsilane Films as Studied by Second-Harmonic Generation Spectroscopy, Chem. Phys. Lett., Vol. 317, pp. 260-263, 2000.
• M. Zennyoji, Y. Takanishi, K. Ishikawa, J. Thisayukta, J. Watanabe, H. Takezoe. Electrooptic and Dielectric Properties in Bent-Shaped Liquid Crystals, Jpn. J. Appl. Phys., Vol. 39, No. 6A, pp. 3536-3541, 2000.
• M. Nakata, S. Ikeda, T. Ogasawara, Y. Takanishi, K. Ishikawa, H. Takezoe. Surface Behavior of V-Shaped Switching in Smectic C*-like Liquid Crystals, SPIE PROC., Vol. 3955, pp. 45-53, 2000.
• S. Shibahara, Y. Takanishi, K. Ishikawa, H. Takezoe. Ellipsometric Study of Freely-Suspended Films of an Antiferroelectric Liquid Crystal Mixture Showing V-Shaped Switchng, Ferroelectrics, Vol. 244, pp. 295-301, 2000.
• T. Akizuki, K. Miyachi, Y. Takanishi, K. Ishikawa, H. Takezoe, A. Fukuda. Molecular Orientational Structures with Macroscopic Helix in Antiferroelectric Liquid Crystal Substrates, Jpn. J. Appl. Phys, Vol. 38, pp. 4832-4837, 1999.
• 石川　謙, 竹添秀男, 中尾　聡, 林　善雄, 武田　正, 小林一雄, 林　賢一. 共役系高分子を用いた回折型偏光分離素子の開発, 工業材料, Vol. 47, pp. 75-79, 1999.
• S. Nakao, H. Hoshi, K. Ishikawa, H. Takezoe. Two-Step Epitaxial Growth of Vanadyl-Phthalocyanine on Alkali-Halide Substrates, JJAP, Vol. 37, pp. 4989-4993, 1998.
• S. Shibahara, M. Yamane, K. Ishikawa, H. Takezoe. Direct Synthesis of Oriented trans-Polyacetylene Films, Macromolecules, Vol. 31, pp. 3756-3758, 1998.

著書

• 石川謙, 川本正. 材料科学実験(M,P,C), 材料科学実験(M,P,C), pp. P20-P38, May 2016.
• 石川謙, 大津 元一, 田所 利康. イラストレィテッド 光の科学, 朝倉書店, Oct. 2014.
• 石川 謙, 一ノ瀬 秀雄, 氏家 誠司, 太田 和親, 岡村 維彦, 木村 宗弘, 斎藤 一弥, 高西 陽一, 廣嶋 綱紀, 藤掛 英夫, 山口 留美子, 山本 潤. 液晶科学実験講座, シグマ出版, Nov. 2007.
• 石川謙. 高分子の物性 (2) 電気・光・磁気的性質, 共立出版, 共立出版, 1998.
• 石川謙. 材料科学への招待, 培風館, 培風館, 1997.

国際会議発表 (査読有り)

• Ken Ishikawa, Hitoshi Sasaki. Self-modulation structure emerging at N-SmC phase transition, 27th International Liquid Crystal Conference, July 2018.
• Zhengyu Feng, Atsuo Fukuda, Jagdish K.Vij, Ken Ishikawa. Thresholdless properties of the Qt=1/2 antiferrelectric liquid crystal in a binary mixture, 27th International Liquid Crystal Conference (ILCC2018), July 2018.
• Z. Feng, K. Ishikawa. Gradual Transition from Ferroelectric to Antiferroelectric LC Phase for Binary Mixture System, International Display Workshop, Proceeding of IDW, Dec. 2016.
• Satoshi Aya, Khoa Van Le, Fumito Araoka, Hideo Takezoe, Ken Ishikawa. Optically Isotropic Nematic Phase With a Wide Temperature Range Due To Nanosize Effect, The 23rd International Liquid Crystal Conference, July 2010.
• Hiroki Nagayama, Yuji Sasaki, Fumito Araoka, Ken Ishikawa, Kenji Ema, Hideo Takezoe. Phase Transition in Mixtures Consisting of Bent-Core and Rod Molecules, The 23rd International Liquid Crystal Conference, July 2010.
• Naomi Koizumi, Ken Ishikawa, Fumito Araoka, Hideo Takezoe, G Shanker, C. V. Yelamaggad. Antiferroelectric Switching Accompanied With Electro-Clinic Effect in a Discotic Columnar Phase of a Dipeptide Derivative, July 2010.
• Lingfeng Guo, Kinga Gomola, Fumito Araoka, Damian Pociecha, Ewa Gorecka, Ken Ishikawa, Hideo Takezoe. Optically uniaxial smectic A phase with antiferroelectric behaviourSyntheses and Mesogenic Properties of Dimers and Trimers Consisting of Triphenylene Donor and Anthraquinone Acceptor, The 23rd International Liquid Crystal Conference, July 2010.
• Hideo Takezoe, Satoshi Aya, Khoa Van Le, Fumito Araoka, Ken Ishikawa, Stefanie Taushanoff, Antal Jákli. Optical Isotropic Phases for Display Application, The 23rd International Liquid Crystal Conference, July 2010.
• Won Hoe Koo, Soon Moon Jeong, Fumito Araoka, Ken Ishikawa, Suzushi Nishimura, Takehiro Toyooka, Hideo Takezoe. Light extraction from organic light emitting diodes enhanced by using spontaneously formed buckles, 1st Asian Conference on Organic Electronics(A-COE), Sept. 2009.
• Hiroki Nagayama, Sanjay Kumar Varshney, Masanao Goto, Fumito Araoka, Ken Ishikawa, Veena Prasad, Hideo Takezoe. Spontaneous chiral segregation of achiral disk-like molecules in the columnar phase, 12th International Conference on Ferroelectric Liquid Crystals (FLC'09), Sept. 2009.
• Reiri Kogo, Fumito Araoka, Ken Ishikawa, Hideo Takezoe, Yoshiaki Uchida, Rui Tamura. Phase-matched SHG in a paramagnetic all-organic chiral smectic liquid crystal, 12th International Conference on Ferroelectric Liquid Crystals (FLC'09), Sept. 2009.
• Naomi Koizumi, Fumito Araoka, Ken Ishikawa, Hideo Takezoe, Govindaswamy Shanker, Channabasaveshwara V.Yelamaggad. Electro clinic effect in a discotic columnar phase of a dipeptide derivative, 12th International Conference on Ferroelectric Liquid Crystals (FLC'09), Sept. 2009.
• Khoa Van Le, Fumito Araoka, Katalin Fodor-Csorba, Ken Ishikawa, Hideo Takezoe. Flexoelectric effect in a bent-core mesogen, 12th International Conference on Ferroelectric Liquid Crystals (FLC'09), Sept. 2009.
• Taketo Otani, Fumito Araoka, Ken Ishikawa, Hideo Takezoe. B2 and B4 phases of a bent-core molecule studied by circular dichroism and Raman spectroscopy, 12th International Conference on Ferroelectric Liquid Crystals (FLC'09), Sept. 2009.
• M. Goto, Y. Watakabe, H. Takezoe, K. Ishikawa. Anisotropic and Enhanced FET Performance in Rubbing-Aligned CuPc Thin Film Transistor with Top Gate Structure, Mater. Res. Soc. Symp Proc., 1091E, AA11-18, Nov. 2008.
• Shingo Tanaka, Surajit Dhara, B. K. Sadashiva, Yoshio Shimbo, Yoichi Takanishi, Fumito Araoka, Ken Ishikawa, Hideo Takezoe. Alternative twist structures formed by electroconvection in the nematic phase of an achiral bent-core molecule, The 22nd International Liquid Crystal Conference, June 2008.
• Taketo Otani, Shin Matsumoto, Yoichi Takanishi, Yuji Sasaki, Fumito Araoka, Ken Ishikawa, Kenji Ema, Junji Watanabe, Keiki Kishikawa, Hideo Takezoe. Phase behavior of binary mixtures formed by bent-core and rod-like achiral molecules, The 22nd International Liquid Crystal Conference, June 2008.
• Soon Moon Jeong, Na Young Ha, Fumito Araoka, Ken Ishikawa, Hideo Takezoe. Polarization-tunable distributed feedback laser, The 22nd International Liquid Crystal Conference, June 2008.
• Khoa Van Le, Fumito Araoka, Surajit Dhara, B. K. Sadashiva, Ken Ishikawa, Hideo Takezoe. Determination of Bend Flexoelectric Coefficient of Bent-Core Nematic Liquid Crystals, The 22nd International Liquid Crystal Conference, June 2008.

国内会議発表 (査読有り)

• Surajit Dhara, Jin Ki Kim, Soon Moon Jeong, 向後 伶利, 荒岡 史人, 石川 謙, 竹添 秀男. Anchoring transitions of transversely polar liquid-crystal molecules on perfluoropolymer surfaces, 2009年液晶討論会, Nov. 2009.
• Soon Moon Jeong, Jin Ki Kim, 新保 仁男, 荒岡 史人, Surajit Dhara, Na Young Ha, 石川 謙, 竹添 秀男. Perfluoropolymer surface for stable homeotropic alignment of smectic liquid crystals, 2009年液晶討論会, Sept. 2009.
• 向後 伶利, 荒岡 史人, 石川 謙, 竹添 秀男, 内田 幸明, 田村 類. 強誘電性有機ラジカル液晶の位相整合SHG, 2009年液晶討論会, Sept. 2009.
• 大谷 健人, 荒岡 史人, 石川 謙, 竹添 秀男. アキラル屈曲形液晶のB4相中でナノ偏析したアキラル棒状分子による光学活性の増強, 2009年液晶討論会, Sept. 2009.
• 大谷 健人, 荒岡 史人, 石川 謙, 竹添 秀男. 屈曲形分子液晶の呈するキラル相における円偏光二色性とラマン分光測定, 2009年液晶討論会, Sept. 2009.
• Lingfeng Guo, Kinga Gomola, Surajit Dhara, Ewa Gorecka, 新保 仁男, 荒岡 史人, Damian Pociecha, 石川 謙, 竹添 秀男. Transition between two orthogonal polar phases in symmetric bent-core liquid crystals, 2009年液晶討論会, Sept. 2009.
• 小泉 奈緒美, 永山 裕貴, 荒岡 史人, 石川 謙, 竹添 秀男, G. Shanker, C.V.Yelamaggad. アミノ酸カラムナー液晶における電傾効果の発現, 2009年液晶討論会, Sept. 2009.
• 渡邊 陽, 内村 真, 小西 玄一, 荒岡 史人, 石川 謙, 竹添 秀男. ピレン誘導体を用いたコレステリック液晶レーザーの評価, 2009年液晶討論会, Sept. 2009.
• 永山 裕貴, Sanjay Kumar Varshney, 後藤 正直, 荒岡 史人, 石川 謙, Veena Prasad, 竹添 秀男. カラムナー相におけるアキラルな円盤状分子が示す自発的なキラル分掌, 2009年液晶討論会, Sept. 2009.

国際会議発表 (査読なし・不明)

• Araoka, F., Eremin, A., Aya, S., Lee, G., Ito, A., Nadasi, H., Sebastian, N., Ken Ishikawa, Haba, O., Stannarius, R., Yonetake, K., Takezoe, H.. Photoresponsive smart surface of LC azo-dendrimer: Photomanipulation of topological structures and real-time imaging at a nano-scale, Proceedings of SPIE - The International Society for Optical Engineering, Vol. 10125, 2017.
• Guksik Lee, Hyeon-cheol Jeong, Fumito Araoka, Ken Ishikawa, Jong Gun Lee, Mojca Cepic, Kyung-Tae Kang, Hideo Takezoe. Anchoring transition of bent-rod liquid crystal dimers on different surfaces, 2011 International Symposium on Molecular System, May 2011.
• Guksik Lee, Hyeon-cheol Jeong, Fumito Araoka, Ken Ishikawa, Jong Gun Lee, Kyung-Tae Kang, Mojca Cepic, Hideo Takezoe. Anchoring transition of bent-rod liquid crystal dimers on different surfaces, 2nd Tokyo Tech - EPFL Workshop on Materials, Mar. 2011.
• Koo, W.H., Jeong, S.M., Araoka, F., Ken Ishikawa, Nishimura, S., Toyooka, T., Takezoe, H.. Enhanced outcoupling efficiency of organic light emitting diodes by spontaneously formed buckles, Proceedings of International Meeting on Information Display, pp. 342-343, 2010.
• suk-won choi, Sungmin Kang, Yoichi Takanishi, Ken Ishikawa, Junji Watanabe, hideo takezoe. Preferential chirality prepared from achiral banana-shaped molecule using twisted cell configurations, July 2006.

国内会議発表 (査読なし・不明)

• 中川佳祐, 石川 謙. 無閾反強誘電相を持つMC-815, MC-881混合系液晶の電場誘起複屈折測定, 日本液位症学会討論会, Sept. 2023.
• 城田幸一郎, FengZhengyu, 石川 謙, 福田敦夫, 荒岡史人, 山形 豊. SHG顕微鏡による「無閾値」反強誘電性液晶の分極反転の観察, 日本液晶学会 オンライン研究は票解, Oct. 2020.
• 米田 優, Jampani V.S.R, 荒岡 史人, 石川 謙. 局所回転電場中でのネマチック液晶の配向と背流制御についての研究, 2015年液晶討論会, Sept. 2015.
• 横山昌憲, 向後潤一, Gorecka Ewa, 石川謙. ジベンゾフェナジン誘導体及びバルビツール酸誘導体Ni錯体におけるカラ, 日本液晶学会討論会, Sept. 2015.
• 永山 裕貴, 佐々木 裕司, 荒岡 史人, 石川 謙, 江間 健司, 竹添 秀男. 屈曲型分子と棒状分子の混合系における相転移挙動, 2010年日本液晶学会討論会, Sept. 2011.
• 郭 玲鳳, Gorecka Ewa, Pociecha Damian, Vaupotic Natasa, 荒岡 史人, 石川謙, 竹添 秀男. Orthogonal smectic phase with spontaneous macroscopic ferroelectric order, 日本液晶学会討論会講演予稿集, THE JAPANESE LIQUID CRYSTAL SOCIETY, Vol. 2011, pp. 158-158, 2011.
• レ バン コア, Taushanoff Stefanie, 荒岡 史人, 石川 謙, Jakli Antal, 竹添 秀男. バナナ形液晶の形成するアモルファスブルー相, 2010年日本液晶学会討論会, Sept. 2010.
• 謝 暁晨, レ バン コア, 荒岡 史人, 石川 謙, 竹添 秀男. ナノサイズ効果による光学的等方性ネマチック相の出現と電気光学応物答, Sept. 2010.
• 竹添 秀男, キム ジンキ, レ バン コア, ダーラ スラジット, 荒岡 史人, 石川 謙. 含色素ネマチック液晶を用いた光、および電場駆動型双安定デバイス, 2010年日本液晶学会討論会, Sept. 2010.
• Hongje Yun, Wonhoe Koo, 荒岡 史人, 石川 謙, 竹添 秀男. Buckling現象によるマイクロレンズを用いたOrganic Light Emitting Diodeの光取出効率の向上, 第57回応用物理学関係連合講演会, Mar. 2010.
• 李 国植, ｼﾞﾖﾝﾋﾖﾝﾁﾖﾙ, 荒岡 史人, 石川 謙, Kang Kyung-Tae, 竹添 秀男. 非対称アキラル屈曲型液晶におけるアンカーリング転移, 2009年液晶討論会, Sept. 2009.
• 小泉 奈緒美, 後藤 正直, 荒岡 史人, 石川 謙, 竹添 秀男, 横川 美保, 向井 秀知, 太田 和親. Pc2Tb誘導体の分極反転挙動, 日本液晶学会討論会, Sept. 2008.
• 青木良夫, 渡部剛吉, 角田麗, 石川謙. 混合ネマチック液晶の配向に関する研究, 日本液晶学会討論会, Sept. 2007.
• 後藤 正直, 竹添 秀男, 石川 謙. Carrier transport simulation of anomalous temperature dependence in nematic liquid crystals, Phys. Rev. E, Vol. 76, pp. 040701(R)-1-4, July 2007.
• 薄田 真, M. Kamei, 竹添 秀男, 石川 謙. Usufulness of substrate cleaning with carbon dioxide for organic electronic devices, Jpn. J. Appl. Phys, Vol. 46, pp. L910-L912, July 2007.
• 石川　謙. テラヘルツ分光の液晶研究への応用, ２００５日本液晶学会討論会, pp. 161,162, Sept. 2005.

その他の論文・著書など

• 石川　謙. ラビング基板を用いた面内配向蒸着薄膜の作製と評価, 液晶, Vol. 10, No. 4, pp. 393-399, 2006.
• 石川　謙. 偏光顕微鏡のしくみと使い方(3), 日本液晶学会誌, Vol. 9, pp. 45-55, 2005.
• 石川　謙. 偏光顕微鏡のしくみと使い方（4）, 日本液晶学会誌, Vol. 9, pp. 114-125, 2005.

学位論文

• 強誘電性液晶セルの欠陥構造と分子配向,  本文,  工学博士,  東京工業大学,  1988/02/29,   

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