期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 82, 期 9, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3633950
关键词
atomic force microscopy; calcium compounds; diamond; force sensors; graphene; noise; Q-factor; quartz; vibrations
资金
- [Graduiertenkolleg 1570]
We report on atomic force microscopy (AFM) in ambient and liquid environments with the qPlus sensor, a force sensor based on a quartz tuning fork with an all-electrical deflection measurement scheme. Small amplitudes, stiff sensors with bulk diamond tips and high Q values in air and liquid allow to obtain high resolution images. The noise sources in air and liquid are analyzed and compared for standard silicon cantilevers and qPlus sensors. First, epitaxial graphene was imaged in air, showing atomic steps with 3 angstrom height and ridges. As a second sample system, measurements on calcite (CaCO3) in liquids were performed in water and polyethylenglycol (PEG). We demonstrate high resolution images of steps in PEG on calcite and nanolithography processes, in particular with frequency-modulation AFM the controlled dissolution of calcite monolayers. (C) 2011 American Institute of Physics. [doi:10.1063/1.3633950]
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据