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Title
Japanese: 
English:Coulomb blockade behaviors in industrial Au nanoparticles as observed through noncontact atomic force spectroscopy at room temperature 
Author
Japanese: 服部 繁樹, 加納 伸也, 東 康男, 田中 大輔, 坂本 雅典, 寺西 利治, 真島 豊.  
English: Shigeki Hattori, Shinya Kano, Yasuo Azuma, Daisuke Tanaka, Masanori Sakamoto, Toshiharu Teranishi, Yutaka Majima.  
Language English 
Journal/Book name
Japanese: 
English:Nanotechnology 
Volume, Number, Page Vol. 23        p. 185704-1-9
Published date Apr. 19, 2012 
Publisher
Japanese: 
English:IOP Publishing Ltd 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1088/0957-4484/23/18/185704
Abstract Coulomb blockade behaviors in individual Au nanoparticles of 2 nm core diameter in double-barrier structures have been studied by means of noncontact atomic force spectroscopy(NC-AFS) at room temperature. The Au nanoparticles with a 1-decanethiol ligand were chemisorbed by 1,10-decanedithiol molecules of a mixed 1-octanethiol/1,10-decanedithiolself-assembled monolayer coated on a Au(111) surface; these particles were observed through NC-AFS. NC-AFS measurements of the cantilever frequency shift–sample voltage (1f –VS)curves were sequentially conducted on three Au nanoparticles under the same experimental conditions; the 1f –VS curves were found to deviate from the parabolic (1fN) curve in the cases where no extra charge existed on the Au core. The experimental 1fCB(D1f 〓 1fN) and 1fCB=V curves agree well with the theoretical curves obtained using a golden-rule calculation and the same parabolic parameters. All the results, through NC-AFS, suggest Coulombblockade behaviors in the Au nanoparticles at room temperature.

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