Dynamic electrostatic force microscopy in liquid media
Dynamic electrostatic force microscopy in liquid media
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DOI：
10.1063/1.4768164
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发表时间：
2012-11-19
影响因子：
4
通讯作者：
Gomila, G.
中科院分区：
文献类型：
--
作者：
Gramse, G.;Edwards, M. A.;Gomila, G.
我们提出了在液体介质中的动态静电力显微镜的实施。该实现使得能够以纳米级空间分辨率对电解质溶液中的材料的局部介电性质进行定量成像。局部成像能力是通过在高频（>1 MHz）下探测依赖于频率和依赖于离子浓度的静电力来获得的，而相互作用力的量化是通过有限元数值计算来获得的。这些结果在许多领域开辟了广泛的可能性，在这些领域中，需要在纳米级和液体环境中探测材料的介电特性。(C)2012年美国物理学会。[http：//dx.doi.org/10.1063/1.4768164]
We present the implementation of dynamic electrostatic force microscopy in liquid media. This implementation enables the quantitative imaging of local dielectric properties of materials in electrolyte solutions with nanoscale spatial resolution. Local imaging capabilities are obtained by probing the frequency-dependent and ionic concentration-dependent electrostatic forces at high frequency (>1 MHz), while quantification of the interaction forces is obtained with finite-element numerical calculations. The results presented open a wide range of possibilities in a number of fields where the dielectric properties of materials need to be probed at the nanoscale and in a liquid environment. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768164]