Inverse calculation of three-dimensional solvation structure on an arbitrary surface from a force distribution measured by liquid AFM

2nd International Conference on Mathematical Modeling in Physical Sciences 2013

物理学;数学

Amano, Ken-Ichi^1 ; Takahashi, Ohgi^1

Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, 981-8558, Sendai, Japan^1

关键词: Arbitrary surfaces;    Force distributions;    Frequency modulated;    Inverse calculation;    Sample surface;    Solvation structure;    Three dimensional forces;    Three dimensional systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/490/1/012162/pdf
DOI  :  10.1088/1742-6596/490/1/012162

来源: IOP

【 摘 要 】

Recent frequency-modulated atomic force microscopy (FM-AFM) can measure the three-dimensional force distribution between a probe and a sample surface in liquid. The force distribution is currently regarded to approximate the solvation structure on the surface, because shapes of the force distribution and the solvation structure are somewhat similar to each other. However, the force distribution is never the solvation structure. Therefore, we propose a method that converts the force distribution to the solvation structure. (This conversion is an example of inverse calculations.) A new benefit of the method is that it can perform the inverse calculation without any simplifications of the shape and the solvation affinity of the actual probe tip in a three-dimensional system.