Multifrequency high-speed phase-modulation atomic force microscopy in liquids |
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Authors: | Yan Jun Li Kouhei TakahashiNaritaka Kobayashi Yoshitaka NaitohMasami Kageshima Yasuhiro Sugawara |
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Affiliation: | Department of Applied Physics, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan |
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Abstract: | We have developed a new technique, called multifrequency high-speed phase-modulation atomic force microscopy (PM-AFM) in constant-amplitude (CA) mode based on the simultaneous excitation of the first two flexural modes of a cantilever. By performing a theoretical investigation, we have found that this technique enables the simultaneous imaging of the surface topography, energy dissipation and elasticity (nonlinear mapping) of materials. We experimentally demonstrated high-speed imaging at a scan speed of 5 frames/s for a polystyrene (PS) and polyisobutylene (PIB) polymer-blend thin-film surface in water. |
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Keywords: | Multifrequency High-speed phase modulation Atomic force microscopy Elasticity |
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