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Title: Photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid

Abstract

The authors present an optically based method combining photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid. The frequency spectrum of a silicon cantilever measured in water over frequencies ranging up to 10 MHz shows that the method allows us to excite and detect higher modes, from fundamental to fifth flexural, without enhancing spurious resonances. By reducing the tip oscillation amplitude using higher modes, the average tip-sample force gradient due to chemical bonds is effectively increased to achieve high-spatial-resolution imaging in liquid. The method's performance is demonstrated by atomic resolution imaging of a mica surface in water obtained using the second flexural mode with a small tip amplitude of 99 pm; individual atoms on the surface with small height differences of up to 60 pm are clearly resolved.

Authors:
; ; ; ; ;  [1]
  1. Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505 (Japan)
Publication Date:
OSTI Identifier:
21266726
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 79; Journal Issue: 12; Other Information: DOI: 10.1063/1.3040500; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; AMPLITUDES; ATOMIC FORCE MICROSCOPY; CHEMICAL BONDS; EXCITATION; LASERS; LIQUIDS; MICA; OSCILLATION MODES; OSCILLATIONS; RESONANCE; SILICON; SPATIAL RESOLUTION; SPECTRA; WATER

Citation Formats

Nishida, Shuhei, Kobayashi, Dai, Sakurada, Takeo, Nakazawa, Tomonori, Hoshi, Yasuo, and Kawakatsu, Hideki. Photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid. United States: N. p., 2008. Web. doi:10.1063/1.3040500.
Nishida, Shuhei, Kobayashi, Dai, Sakurada, Takeo, Nakazawa, Tomonori, Hoshi, Yasuo, & Kawakatsu, Hideki. Photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid. United States. doi:10.1063/1.3040500.
Nishida, Shuhei, Kobayashi, Dai, Sakurada, Takeo, Nakazawa, Tomonori, Hoshi, Yasuo, and Kawakatsu, Hideki. Mon . "Photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid". United States. doi:10.1063/1.3040500.
@article{osti_21266726,
title = {Photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid},
author = {Nishida, Shuhei and Kobayashi, Dai and Sakurada, Takeo and Nakazawa, Tomonori and Hoshi, Yasuo and Kawakatsu, Hideki},
abstractNote = {The authors present an optically based method combining photothermal excitation and laser Doppler velocimetry of higher cantilever vibration modes for dynamic atomic force microscopy in liquid. The frequency spectrum of a silicon cantilever measured in water over frequencies ranging up to 10 MHz shows that the method allows us to excite and detect higher modes, from fundamental to fifth flexural, without enhancing spurious resonances. By reducing the tip oscillation amplitude using higher modes, the average tip-sample force gradient due to chemical bonds is effectively increased to achieve high-spatial-resolution imaging in liquid. The method's performance is demonstrated by atomic resolution imaging of a mica surface in water obtained using the second flexural mode with a small tip amplitude of 99 pm; individual atoms on the surface with small height differences of up to 60 pm are clearly resolved.},
doi = {10.1063/1.3040500},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 12,
volume = 79,
place = {United States},
year = {2008},
month = {12}
}