Statistical analysis of scanning tunneling microscopy images of 'striped' mixed monolayer protected gold nanoparticles

被引：0
作者：
Hu, Ying [1 ]
Wunsch, Benjamin H. [1 ]
Sahni, Sahil [1 ]
Stellacci, Francesco [1 ]
机构：
[1] Department of Materials Science and Engineering, Massachusetts Institute of Technology, 13-4053 Cambridge, MA 02139-4307
来源：
Journal of Scanning Probe Microscopy | 2009年 / 4卷 / 01期
关键词：
Alkanethiols; Gold nanoparticles; Ligand shell; Nanoclusters; Phase separation; Protected metal nanoparticles; Scanning tunneling microscopy;
D O I：
10.1166/jspm.2009.1004
中图分类号：
学科分类号：
摘要：
Recent studies based on scanning tunneling microscopy (STM) have shown that when gold nanoparticles are coated with binary mixtures of ligand molecules ribbon-like domains of alternating composition spontaneously form in the particles ligand shell. The presence of these domains has been linked to many surface properties, such as protein nonspecific adsorption, cell membrane permeation, or solubility. Here we present a detailed report on the methods and procedures used to acquire and analyze STM images of these ligand coated nanoparticles. We develop a novel statistical approach to analyze the images and differentiate them from images generated by feedback loop artifact. We conclude with a discussion of the potentials and problems of this technique. Copyright © 2009 American Scientific Publishers.
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页码：24 / 35
页数：11
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