Tapping-mode tuning fork force sensing for near-field scanning optical microscopy
作者:
Din Ping Tsai,
Yuan Ying Lu,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 19
页码: 2724-2726
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.122558
出版商: AIP
数据来源: AIP
摘要:
A tapping-mode tuning fork force-sensing method for near-field scanning optical microscope is reported. Use of the tapping-mode tuning fork with mechanically asymmetric excitation generates better stability and sensitivity than in the shear force mode. Comparison of force curves for the two methods demonstrate that the tapping-mode tuning fork method provides a simpler and more sensitive method for near-field measurements. The method is demonstrated by imaging a sample consisting of 500 nm standard polystyrene spheres on silica in both air and water. ©1998 American Institute of Physics.
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