Theoretical simulation of noncontact atomic force microscopy in liquids

被引：16

作者：

Tsukada, M. ^{[1
]}

Watanabe, N. ^{[2
]}

Harada, M. ^{[3
]}

Tagami, K. ^{[3
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Mizuho Informat & Res Inst Inc, Chiyoda Ku, Tokyo 1018443, Japan

[3] AdvanceSoft Corp, Minato Ku, Tokyo 1070052, Japan

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2010年 / 28卷 / 03期

关键词：

atomic force microscopy; cantilevers; fluid dynamics; mica; molecular dynamics method; MOLECULAR-DYNAMICS; TIP; SURFACE; WATER; WALL;

D O I：

10.1116/1.3430541

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Methods of theoretical simulations of noncontact atomic force microscopy in liquids have been developed. Though there are several difficult issues for the theoretical simulations in liquids, the authors introduce here the simulation methods for the cantilever oscillation in liquids and the tip-sample interaction force mediated by water molecules. As for the cantilever motion, a very efficient numerical method is proposed which solves the oscillation of the elastic beam cantilever and fluid dynamics simultaneously. The results reproduce fairly well the resonant curve and related properties of the Si beam cantilever. As for the simulation of the tip-sample interaction force in water, classical molecular dynamics (MD) method is adopted in the present work. The case study by MD for the mica surface in water revealed new features that appeared in the three-dimensional force map. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3430541]

引用

页数：4

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