DYNAMIC FORCE MICROSCOPY IN LIQUIDS

被引:26
作者
DREIER, M
ANSELMETTI, D
RICHMOND, T
DAMMER, U
GUNTHERODT, HJ
机构
[1] Institute of Physics, University of Basel, CH-4056 Basel
关键词
D O I
10.1063/1.357221
中图分类号
O59 [应用物理学];
学科分类号
摘要
We applied dynamic force microscopy in a liquid environment to silanized and derivatized glass surfaces, InGaAs, as well as to biological materials such as hexagonally packed intermediate layers of deinococcus radiodurans. The vertical and lateral resolution were estimated to be <1 Angstrom and 7-10 nm, respectively. Upon immersing the cantilever into water, the resonance frequency was found to be reduced by a factor of two and the Q factor was lowered to 20-30. The experimental working distance between sensor and sample was determined with approach curves indicating that the range of interaction in water is much shorter compared to air.
引用
收藏
页码:5095 / 5098
页数:4
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