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Near-field light detection by conservative and dissipative force modulation methods using a piezoelectric cantilever

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7 Author(s)
Satoh, Nobuo ; Department of Electronic Science and Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan ; Fukuma, Takeshi ; Kobayashi, Kei ; Watanabe, Shunji
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We demonstrated near-field light detection by dynamic force microscope using a self-sensing piezoelectric cantilever having a lead zirconate titanate thin film layer. The cantilever tip was brought close to a glass plate with a patterned chromium film on a right angle prism. The backside of the prism was irradiated by an intensity modulated laser light to create an evanescent field at the glass surface. We obtained near-field optical images of the patterned glass by detecting the frequency shift modulation or the amplitude modulation induced by the near-field light while the tip-sample distance was regulated by the frequency modulation method in ambient condition.

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Applied Physics Letters  (Volume:96 ,  Issue: 23 )