"R. Nomura,T. Takahashi,H. Minezaki,A. Suzuk,K. Obara,K. Itaka,Y. Okuda","Contact Angles of 4He Crystals on Smooth and Rough Walls","12th International Conference on Cryocrystals and Quantum Crystals",,,,,,2018,Aug. "R. Nomura,T. Takahashi,H. Minezaki,A. Suzuki,K. Obara,K. Itaka,Y. Okuda","Wetting Property of 4He Crystals on a Rough Wall","International Symposium on Quantum Fluids and Solids 2018",,,,,,2018,July