Role of Surface Perfection in Chemical Force Microscopy.

Role of Surface Perfection in Chemical Force Microscopy.
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表面完美在化学力显微镜中的作用。

DOI:
10.1021/la970374e
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发表时间:
1998
期刊:
Langmuir : the ACS journal of surfaces and colloids
影响因子:
--
通讯作者:
T. Rayment
T. Rayment
中科院分区:
--
文献类型:
--
作者:
R. McKendry;M. Theoclitou;C. Abell;T. Rayment

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在本文中,我们调查的质量的金基板上的分布的粘附力测量化学力显微镜的影响。用两种方法制备了金样品,在云母上得到主要是单晶Au(111)或多晶金膜。金涂层的尖端和表面功能化与自组装单分子膜终止于羧基,并超过500力距离图。这些图的分析显示,在单晶表面上制备的单层和在多晶金上制备的单层之间的粘附力的分布窄50%,当在单个点重复测量时。然而,当在1 μm2面积上进行测量时,两种样品的粘附力分布相似。对此的解释可能在于相对于尖端的接触面积的金表面上的域的大小。
In this paper we investigate the effect that the quality of the gold substrate has upon the distribution of adhesion force measurements in chemical force microscopy. Gold samples have been prepared by two protocols which give either predominantly single-crystal Au(111) or polycrystalline gold films on mica. Gold-coated tips and surfaces were functionalized with self-assembled monolayers terminating in carboxylic groups, and more that 500 force-distance plots were taken. Analysis of these plots revealed a 50% narrower distribution of adhesion forces between monolayers prepared on single-crystal surfaces and monolayers prepared on polycrystalline gold, when measurements were repeated at a single point. However when measurements were taken over a 1-μm2 area, the distribution of adhesion forces was similar for both samples. An explanation for this may lie in the size of the domains on the gold surface relative to the contact area of the tip.
扫描力显微镜粘附力测量中离散蛋白质-表面相互作用的影响。
DOI: 10.1021/la00004a051
发表时间: 1995
期刊: Langmuir : the ACS journal of surfaces and colloids
影响因子: --
作者:
Stuart,JoanK;Hlady,Vladimir
通讯作者: Hlady,Vladimir
在 AFM 力测量过程中测量悬臂变形的新方法。
DOI: 10.1021/la960450y
发表时间: 1996
期刊: Langmuir : the ACS journal of surfaces and colloids
影响因子: --
作者:
Hlady,V;Pierce,M;Pungor,A
通讯作者: Pungor,A