Effects of Chain Length on Adhesive Force between Gold Tip and Gold Substrate Covered with Alkanethiol Self-Assembled Monolayers
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概要
- 論文の詳細を見る
The effects of chain length on adhesive force between a gold-coated tip and a Au(111) substrate covered with alkanethiol self-assembled monolayers (SAMs) were studied. By microcontact printing ($\mu$-CP), we prepared a patterned surface covered with two types of $n$-alkanethiol that have the same CH3-terminal functional group but different chain lengths. As a method for mapping adhesive force, pulsed-force-mode atomic force microscopy (PFM-AFM) was used. PFM-AFM enables the simultaneous imaging of surface topography and adhesive force. Regardless the use of the same CH3-terminal functional group to modify a surface, a difference in adhesive force corresponding to the printed pattern was observed. The adhesive force on a printed region covered with a longer alkanethiol SAM was slightly smaller than that of an unprinted region covered with a shorter alkanethiol SAM chemisorbed from solution after $\mu$-CP. The possible molecular mechanisms for the difference in the observed adhesive force were discussed in detail.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-07-15
著者
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Fujihira Masamichi
Department Of Biomolecular Engineering Tokyo Institute Of Technology
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Akimoto Keiko
Department Of Biomolecular Engineering Tokyo Institute Of Technology
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Sato Fuminobu
Department Of Biomolecular Engineering Tokyo Institute Of Technology
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MORIKAWA Takuya
Analysis and Simulation Center, Corporate Research and Development Administration, Asahi Kasei Corp.
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Fujihira Masamichi
Department of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8501, Japan
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Morikawa Takuya
Analysis and Simulation Center, Corporate Research and Development Administration, Asahi Kasei Corp., 2-1 Samejima, Fuji, Shizuoka 416-8501, Japan
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Akimoto Keiko
Department of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8501, Japan
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Sato Fuminobu
Department of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta Midori-ku, Yokohama 226-8501, Japan
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