|
|||||
|
|
Direct measurement of electron transport features in cytochrome c via V–I characteristics of STM currents |
|
| Authors: | Jun Morimoto Hiroyuki Tanaka Tomoji Kawai |
| Affiliation: | Institute of Scientific and Industrial Research, Osaka University, Ibaraki, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan |
| Abstract: | The morphology of and electron tunneling through single and cluster cytochrome c molecules deposited on self-assembled dodecanthiol monolayer film on a gold substrate have been studied experimentally using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy. STM images of a single cytochrome c molecule revealed a globular structure with a diameter of 4 nm and height of 1.5 nm. A spectroscopic study obtained by recording tunneling current–bias voltage (V–I) curves revealed that the STM current increases stepwise at asymmetric threshold sample bias voltages of +100 mV and –200 mV. |
| Keywords: | Scanning tunneling microscopy Biomolecules: structure and physical properties Cytochrome c Metallic surfaces Au(1 1 1) Thin layers, films, monolayers, membranes Spectroscopic techniques Vacuum microelectronics Vacuum deposition Spray coating techniques Single molecule reaction kinetics, dissociation, etc. |
| 本文献已被 ScienceDirect 等数据库收录！ | |