Force dependence of energy barriers in atomic friction and single-molecule force spectroscopy: critique of a critical scaling relation
Force dependence of energy barriers in atomic friction and single-molecule force spectroscopy: critique of a critical scaling relation
复制标题
原子摩擦和单分子力谱中能垒的力依赖性:对临界标度关系的批判
DOI:
10.1088/0953-8984/27/12/125004
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
P. Reimann
中科院分区:
文献类型:
--
作者:
M. Evstigneev;P. Reimann
Friction force microscopy and single-molecule force spectroscopy are experimental methods to explore multistable energy landscapes by means of a controlled reduction of the energy barriers between adjacent potential minima. This affects the system's interstate transition rates proportional to e− ΔE (f)/k B T, with ΔE (f) being the barrier height, k B T the thermal energy, and f the elastic force applied. It is often assumed that, at large forces, the barrier height scales as (f c− f) 3/2, where f c is the critical force, at which the barrier vanishes. We show that, for the elastic forces produced by a pulling device of finite stiffness κ, this scaling relation is actually incorrect. Rather, the barrier is a double-valued function of force of the form
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影响因子:
3.4
作者:
Evans, E;Ritchie, K
通讯作者:
Ritchie, K
影响因子:
3.7
作者:
M. Evstigneev;P. Reimann
通讯作者:
P. Reimann
DOI:
10.1103/physreve.68.045103
发表时间:
2003
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
M. Evstigneev;P. Reimann
通讯作者:
P. Reimann
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Evstigneev;A. Schirmeisen;L. Jansen;H. Fuchs;P. Reimann
通讯作者:
P. Reimann
影响因子:
3.2
作者:
Roth, Raphael;Glatzel, Thilo;Meyer, Ernst
通讯作者:
Meyer, Ernst