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Nobuyuki Aoki
Researcher at Chiba University
Publications - 148
Citations - 2327
Nobuyuki Aoki is an academic researcher from Chiba University. The author has contributed to research in topics: Graphene & Quantum point contact. The author has an hindex of 21, co-authored 136 publications receiving 2041 citations. Previous affiliations of Nobuyuki Aoki include National Taiwan University & Panasonic.
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Journal ArticleDOI
Using optical vortex to control the chirality of twisted metal nanostructures.
TL;DR: It is discovered for the first time that light can twist metal to control the chirality of metal nanostructures (hereafter, chiral metal nanoneedles), which will enable us to selectively distinguish the chiral and optical activity of molecules and chemical composites on a nanoscale.
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Metal microneedle fabrication using twisted light with spin
Takashige Omatsu,Keisuke Chujo,Katsuhiko Miyamoto,Masahito Okida,Kazuki Nakamura,Nobuyuki Aoki,Ryuji Morita +6 more
TL;DR: Microneedle fabrication on a metal surface based on laser ablation using twisted light with spin was demonstrated, for the first time, and the resulting needle showed a height of at least 10 microm above the target surface and a tip diameter of less than 0.3 microm.
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Tunable Electrical and Optical Characteristics in Monolayer Graphene and Few-Layer MoS2 Heterostructure Devices
Servin Rathi,Inyeal Lee,Dongsuk Lim,Jianwei Wang,Yuichi Ochiai,Nobuyuki Aoki,Kenji Watanabe,Takashi Taniguchi,Gwan Hyoung Lee,Young-Jun Yu,Philip Kim,Gil-Ho Kim +11 more
TL;DR: Graphene-MoS2 heterostructure exhibits a strongest optical response for 520 nm wavelength, which decreases with higher wavelengths, and the peak in the photocurrent around zero gate voltage is distinguished from conventional MoS2 FETs, which show a continuous increase in photocurrent with back-gate voltage.
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Conduction Mechanisms in CVD-Grown Monolayer MoS2 Transistors: From Variable-Range Hopping to Velocity Saturation.
G. He,Krishnendu Ghosh,Uttam Singisetti,H. Ramamoorthy,R. Somphonsane,Girish Bohra,Masahiro Matsunaga,Ayaka Higuchi,Nobuyuki Aoki,Sina Najmaei,Yongji Gong,Xiao Zhang,Robert Vajtai,Pulickel M. Ajayan,Jonathan P. Bird +14 more
TL;DR: This work confirms the excellent potential of MoS2 as a possible channel-replacement material and highlights the role of multiple transport phenomena in governing its transistor action.
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Effects of gas adsorption on the electrical conductivity of single-wall carbon nanohorns.
Koki Urita,Shinya Seki,Shigenori Utsumi,Daisuke Noguchi,Hirofumi Kanoh,Hideki Tanaka,Yoshiyuki Hattori,Yuichi Ochiai,Nobuyuki Aoki,Masako Yudasaka,Sumio Iijima,Katsumi Kaneko +11 more
TL;DR: The dramatically different electrical conductivity response of ox-SWNH is presumed to be ascribed to the annihilation of pentagons in the single graphene wall by oxidation.