Shear Force Detection Using Single-Tine Oscillating Tuning Fork for Scanning Near-Field Optical Microscopy

Chin. Phys. Lett.

2003, Vol. 20

Issue (3): 338-341 DOI:

Original Articles

Shear Force Detection Using Single-Tine Oscillating Tuning Fork for Scanning Near-Field Optical Microscopy

TAN Xiao-Jing¹;SUN Jia-Lin¹;LIU Sheng¹;GUO Ji-Hua¹;SUN Hong-San²

¹Key Laboratory of Atomic and Molecular Nanosciences of Education Ministry and Department of Physics, Tsinghua University, Beijing 100084 ²CAAD Laboratory, Tsinghua University, Beijing 100084

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TAN Xiao-Jing, SUN Jia-Lin, LIU Sheng et al 2003 Chin. Phys. Lett. 20 338-341

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Abstract We propose a new method to detect near-field by using a single-tine oscillating tuning fork with mechanically asymmetric excitation that exhibits the sensitivity and stability better than that by using a double-tine oscillating one. Comparison of shear forces for the two methods demonstrate that the single-tine oscillating tuning fork provides a simpler and more sensitive method for near-field measurements. A theoretical analysis is presented for explanation to the greater sensitivity. The method is demonstrated by imaging a sparse-packed layer of micro-spheres in size of 200 nm.

Keywords: 07.79.Fc

Published: 01 March 2003

PACS:

07.79.Fc

(Near-field scanning optical microscopes)

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URL:

https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I3/0338

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	TAN Xiao-Jing
	SUN Jia-Lin
	LIU Sheng
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	SUN Hong-San

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