Atomic force microscopy has enabled imaging at the sub-molecular level, and 3D mapping of the tip-surface potential field. However, fast identification of the surface still remains a challenging topic for the microscope to enjoy widespread use as a tool with chemical contrast. In this paper, as a step towards implementation of such function, we introduce a control scheme and mathematical treatment of the acquired data that enable retrieval of essential information characterizing this potential field, leading to fast acquisition of images with chemical contrast. The control scheme is based on the tip sample distance modulation at an angular frequency , and null-control of the component of the measured self-excitation frequency of the oscillator. It is demonstrated that this control is robust, and that effective Morse Parameters that give satisfactory curve fit to the measured frequency shift can be calculated at rates comparable to the scan. Atomic features with similar topography were distinguished by differences in these parameters. The decay length parameter was resolved with a resolution of 10 pm. The method was demonstrated on quenched silicon at a scan rate comparable to conventional imaging.
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Color atomic force microscopy: A method to acquire three independent potential parameters to generate a color image
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18 September 2017
Research Article|
September 20 2017
Color atomic force microscopy: A method to acquire three independent potential parameters to generate a color image
P. E. Allain
;
P. E. Allain
1
LIMMS/CNRS UMI2820 Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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D. Damiron;
D. Damiron
1
LIMMS/CNRS UMI2820 Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Y. Miyazaki;
Y. Miyazaki
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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K. Kaminishi;
K. Kaminishi
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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F. V. Pop
;
F. V. Pop
1
LIMMS/CNRS UMI2820 Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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D. Kobayashi;
D. Kobayashi
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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N. Sasaki;
N. Sasaki
3
Department of Engineering Science, the University of Electro-Communication
, 1-5-1 Chofugaoka, Chofu, Tokyo 153-8585, Japan
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H. Kawakatsu
H. Kawakatsu
1
LIMMS/CNRS UMI2820 Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
2
CIRMM, Institute of Industrial Science, The University of Tokyo
, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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Appl. Phys. Lett. 111, 123104 (2017)
Article history
Received:
June 23 2017
Accepted:
August 30 2017
Citation
P. E. Allain, D. Damiron, Y. Miyazaki, K. Kaminishi, F. V. Pop, D. Kobayashi, N. Sasaki, H. Kawakatsu; Color atomic force microscopy: A method to acquire three independent potential parameters to generate a color image. Appl. Phys. Lett. 18 September 2017; 111 (12): 123104. https://doi.org/10.1063/1.4991790
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