A magnetically driven oscillating probe microscope for operation in liquids
A magnetically driven oscillating probe microscope for operation in liquids
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DOI：
10.1063/1.117835
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发表时间：
1996-12-23
影响因子：
4
通讯作者：
Jing, TW
中科院分区：
文献类型：
--
作者：
Han, WH;Lindsay, SM;Jing, TW
振荡探针原子力显微镜在流体中简化时，振荡力直接施加到磁化悬臂使用螺线管。检测器的响应比声激励获得的响应简单。在宽的频率范围内的可靠操作实现了几nm的激发振幅。这种较低的振幅似乎有助于通过尖端上的小粗糙体进行成像。当用标称宏观曲率半径为50 nm的尖端扫描时，水中与云母弱结合的DNA质粒的图像具有5 nm的全宽。(C)1996年美国物理学会。
Oscillating probe atomic force microscopy in fluids is simplified when an oscillating force is applied directly to a magnetized cantilever using a solenoid. The response of the detector is simpler than that obtained with acoustic excitation. Reliable operation over a broad frequency range is achieved with excitation amplitudes of a few nm. This lower amplitude appears to facilitate imaging by means of small asperities on the tip. Images of a DNA plasmid bound weakly to mica in water have a full width of 5 nm when scanned with tips of a nominal macroscopic radius of curvature of 50 nm. (C) 1996 American Institute of Physics.