Phase imaging with intermodulation atomic force microscopy

被引:19
作者
Platz, Daniel [1 ]
Tholen, Erik A. [1 ]
Hutter, Carsten [1 ,2 ]
von Bieren, Arndt C. [1 ]
Haviland, David B. [1 ]
机构
[1] Royal Inst Technol, SE-10691 Stockholm, Sweden
[2] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden
关键词
Atomic force microscopy; Intermodulation; Multifrequency AFM; Phase imaging; MODE;
D O I
10.1016/j.ultramic.2010.02.012
中图分类号
TH742 [显微镜];
学科分类号
摘要
Intermodulation atomic force microscopy (IMAFM) is a dynamic mode of atomic force microscopy (AFM) with two-tone excitation. The oscillating AFM cantilever in close proximity to a surface experiences the nonlinear tip-sample force which mixes the drive tones and generates new frequency components in the cantilever response known as intermodulation products (IMPs). We present a procedure for extracting the phase at each IMP and demonstrate phase images made by recording this phase while scanning. Amplitude and phase images at intermodulation frequencies exhibit enhanced topographic and material contrast. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:573 / 577
页数:5
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