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Your search keyword '"Cheng, Fuyong"' showing total 97 results
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97 results on '"Cheng, Fuyong"'

1. Resonant tunneling through a C60 molecular junction in liquid environment

Author

Grueter, Lucia, Cheng, Fuyong, Heikkilä, Tero T., González, M. Teresa, Diederich, Francois, Schoenenberger, Christian, and Calame, Michel

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We present electronic transport measurements through thiolated C$_{60}$ molecules in liquid environment. The molecules were placed within a mechanically controllable break junction using a single anchoring group per molecule. When varying the electrode separation of the C$_{60}$-modified junctions, we observed a peak in the conductance traces. The shape of the curves is strongly influenced by the environment of the junction as shown by measurements in two distinct solvents. In the framework of a simple resonant tunneling model, we can extract the electronic tunneling rates governing the transport properties of the junctions., Comment: 13 pages, 4 figures. To appear in Nanotechnology

Published
2005
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3. Research on Error Characteristic and Error Influence Quantity of Instrument Current Transformer by Using Different Verification Methods

Author

Liu Siyang, Mengmeng Zhu, Cheng Fuyong, Bo Li, Jixiong Xiao, and Quancong Zhu

Subjects
Observational error, Control theory, Phase angle, Current (fluid), Lower limit, Excitation, Current transformer, Transformer (machine learning model), Mathematics
Abstract

Based on the designed error verification platform of three-phase combined transformer, the error characteristic of current transformer (CT) unit in three-phase instrument combined transformer is measured. The error influence quantities are also given by a comparison and analysis with single-phase and three-phase verification methods, which including the influences induced by the three phases of the instrument combined transformer simultaneously up-current and both PT and CT are excited at the same time. The results show that the size of the secondary load has a certain influence on its error characteristics, and CT shows different error characteristics under rated load and lower limit load. The three phases of CT unit up-current at the same time only has little influence on its error characteristics. However, if PT unit is in excitation state at the same time, the error of CT at the test points with small current (

Published
2021
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11. Generation of fullerenyl cation (EtO)(sub 2)P(super +)(OH)CH(sub 2)-C(sub 60)(super +) from RC(sub 60)-H and from RC(sub 60)-C(sub 60)R (R = CH(Sub 2)P(O)(OEt)(sub 2))

Author

Murata, Yasujiro, Cheng, Fuyong, Kitagawa, Toshikazu, and Komatsu, Koichi

Subjects
Cations -- Chemical properties, Cations -- Structure, Nuclear magnetic resonance spectroscopy -- Usage, Chemistry
Abstract

The fullerenyl cation is expected to become a common and widely applicable group if RC(sub 60)-H is used as precursor for the cation of RC(sub 60)(super +). The generation of a fullerenyl cation from RC(sub 60)-H(super 7) and from RC(sub 60)-C(sub 60)R (R = CH(Sub 2)P(O)(OEt)(sub 2)) as precursors is described.

Published
2004

12. Preparation of enantiomerically pure 1,1′-bi-2-naphthols from 85% cinchonine and 1,1′-bi-2-naphtholboric anhydride

Author

Huang Shi-wen, Cheng Fuyong, Shan Zi-xing, Xiong Ying, and Zhao Dejie

Subjects
chemistry.chemical_compound, Multidisciplinary, chemistry, Resolution (mass spectrometry), law, 1,1'-Bi-2-naphthol, Organic chemistry, Cinchonine, Mother liquor, Crystallization, Enantiomer, Toluene, law.invention
Abstract

A possibility of preparation of enantiomerically pure 1,1′-bi-2-naphthols using an impure cinchonine has been examined. The solid and the mother liquor formed from the reaction of 1,1′-bi-2-naphtholboric anhydride and 85% cinchonine in toluene could give optically pure (S)-(−)- and (R)-(+)-1,1′-bi-2-naphthol after acidification and kinetic crystallization, the overall yields were 40% and 28%, respectively.

Published
1998
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17. Enrichment of large-diameter semiconducting SWCNTs by polyfluorene extraction for high network density thin film transistors

Author

Ding, Jianfu, primary, Li, Zhao, additional, Lefebvre, Jacques, additional, Cheng, Fuyong, additional, Dubey, Girjesh, additional, Zou, Shan, additional, Finnie, Paul, additional, Hrdina, Amy, additional, Scoles, Ludmila, additional, Lopinski, Gregory P., additional, Kingston, Christopher T., additional, Simard, Benoit, additional, and Malenfant, Patrick R. L., additional

Published
2014
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18. A supramolecular multiposition rotary device

Author

Wintjes, Nikolai, Bonifazi, Davide, Cheng, Fuyong, Kiebele, Andreas, Stöhr, Meike, Jung, Thomas, Spillmann, Hannes, Diederich, Francois, Wintjes, Nikolai, Bonifazi, Davide, Cheng, Fuyong, Kiebele, Andreas, Stöhr, Meike, Jung, Thomas, Spillmann, Hannes, and Diederich, Francois

Published
2007

19. A two-dimensional porphyrin-based porous network featuring communicating cavities for the templated complexation of fullerenes

Author

Spillmann, Hannes, Kiebele, Andreas, Stöhr, Meike, Jung, Thomas A., Bonifazi, Davide, Cheng, Fuyong, Diederich, François, Spillmann, Hannes, Kiebele, Andreas, Stöhr, Meike, Jung, Thomas A., Bonifazi, Davide, Cheng, Fuyong, and Diederich, François

Abstract

An unprecedented two-dimensional porphyrin network featuring dynamic pores capable of hosting fullerenes is realized following a bottom-up approach at a single-crystal silver surface. Surface- and porphyrin-driven long-range interactions between the C-60 guest molecules and porphyrin layer result in the formation of exceptionally large supramolecular hybrid chains and islands (see Figure and Cover).

Published
2006

29. First synthesis of fullerene trimer C180 and its structural identification by scanning tunnelling microscopy(STM)/ Synthesis of novel derivatives of fullerene dimers and open-cage fullerene (ORGANIC MATERIALS CHEMISTRY - High-Pressure Organic Chemistry)

Author

40314273, KOMATSI, Koichi, KITAGAWA, Toshikazu, MORI, Sadayuki, NISHINAGA, Tohru, MURATA, Yasujiro, CHENG, Fuyong, 40314273, KOMATSI, Koichi, KITAGAWA, Toshikazu, MORI, Sadayuki, NISHINAGA, Tohru, MURATA, Yasujiro, and CHENG, Fuyong

Published
2002

33. A Supramolecular Multiposition Rotary Device

Author

Wintjes, Nikolai, primary, Bonifazi, Davide, additional, Cheng, Fuyong, additional, Kiebele, Andreas, additional, Stöhr, Meike, additional, Jung, Thomas, additional, Spillmann, Hannes, additional, and Diederich, François, additional

Published
2007
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