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Peptide friction in water nanofilm on mica surface
  • ISSN号：1674-1056
  • 期刊名称：Chinese Physics B
  • 时间：0
  • 页码：1-6
  • 分类：O484[理学—固体物理;理学—物理] TB383[一般工业技术—材料科学与工程]
  • 作者机构：[1]Department of Physical Biology and Department of Microscopic Water Dynamics, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P. O. Box 800-204, Shanghai 201800, China, [2]Graduate School of the Chinese Academy of Sciences, Beijing 100190, China, [3]Bio-X Laboratory, Department of Physics, Zhejiang University, Hangzhou 310027, China, [4]Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, 19（B） Yuquan Road, Beijing 100049, China
  • 相关基金：＊Project supported by the National Natural Science Foundation of China （Grant No. 10825520）, the National Basic Research Program of China （Grant No. 2007CB936000）, and the National Science Foundation for Post-Doctoral Scientists of China （Grant No. 20100480645）.Acknowledgment We thank Dr. Ren Xiu-Ping for reading the manuscript.
  • 相关项目：理论物理和生物交叉研究
作者： Zhou Bo|Xiu Peng|Wang Chun-Lei|Fang Hai-Ping|
关键词： 纳米薄膜, 多肽, 水面, 表面, 摩擦, 云母, 分子动力学模拟, 横向运动, peptide friction, water nanofilm, mica surface, molecular dynamics simulation
中文摘要：

Peptide frictions in water nanofilms of various thicknesses on a mica surface are studied via molecular dynamics simulations.We find that the forced lateral motion of the peptide exhibits stick-slip behaviour at low water coverage;in contrast,the smooth gliding motion is observed at higher water coverage.The adsorbed peptide can form direct peptide-surface hydrogen bonds as well as indirect peptide-water-surface hydrogen bonds with the substrate.We propose that the stick-slip phenomenon is attributed to the overall effects of direct and indirect hydrogen bonds formed between the surface and the peptide.

英文摘要：

Peptide frictions in water nanofilms of various thicknesses on a mica surface are studied via molecular dynamics simulations. We find that the forced lateral motion of the peptide exhibits stick-slip behaviour at low water coverage; in contrast, the smooth gliding motion is observed at higher water coverage. The adsorbed peptide can form direct peptide-surface hydrogen bonds as well as indirect peptide-water-surface hydrogen bonds with the substrate. We propose that the stick-slip phenomenon is attributed to the overall effects of direct and indirect hydrogen bonds formed between the surface and the peptide.

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期刊信息
  • 《中国物理B：英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国物理学会和中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京 中关村 中国科学院物理研究所内
  • 邮编：100080
  • 邮箱：
  • 电话：010-82649026 82649519
  • 国际标准刊号：ISSN：1674-1056
  • 国内统一刊号：ISSN：11-5639/O4
  • 邮发代号:
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  • 被引量:406