High-Resolution Frequency-Modulation Atomic Force Microscopy in Liquids Using Electrostatic Excitation Method
High-Resolution Frequency-Modulation Atomic Force Microscopy in Liquids Using Electrostatic Excitation Method
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DOI：
10.1143/apex.3.065205
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发表时间：
2010-01-01
影响因子：
2.3
通讯作者：
Yamada, Hirofumi
中科院分区：
文献类型：
--
作者：
Umeda, Ken-ichi;Oyabu, Noriaki;Yamada, Hirofumi
提出了一种利用静电激励驱动液体环境中调频原子力显微镜（FM-AFM）悬臂梁振荡的新方法。通过在悬臂背面和用作液体单元窗口的光学透明电极之间施加振荡偏置电压，使具有金背面涂层的悬臂振动。振荡的频谱示出了没有寄生峰的简单谐振曲线。该方法根本不需要样品的电导率。事实上，水溶液中的白云母和氯化钾表面都成功地在原子尺度上成像。(C)2010日本应用物理学会
We developed a novel method to drive the cantilever oscillation for frequency modulation atomic force microscopy (FM-AFM) in liquid environments using electrostatic excitation. The cantilever with a gold backside coating was vibrated by applying an oscillating bias voltage between the cantilever backside and an optically transparent electrode used as a liquid cell window. The frequency spectrum of the oscillation shows a simple resonance curve without spurious peaks. The method does not require electrical conductivity of samples at all. In fact, both muscovite mica and potassium chloride surfaces in aqueous solutions were successfully imaged on an atomic scale. (C) 2010 The Japan Society of Applied Physics