Nanoscale Molecular Transport: The Case of Dip-Pen Nanolithography

被引：38

作者：

Giam, Louise R. ^{[1
,3
]}

Wang, Yuhuang ^{[2
,3
]}

Mirkin, Chad A. ^{[1
,2
,3
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[3] Northwestern Univ, Int Inst Nanotechnol, Evanston, IL 60208 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY A | 2009年 / 113卷 / 16期

基金：

美国国家科学基金会;

关键词：

FORCE; DISSOLUTION; DIFFUSION; MONOLAYER; SIZE;

D O I：

10.1021/jp809061e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In dip-pen nanolithography experiments, many groups have observed that different tips deliver the same ink at different rates. This article presents a quantitative model for understanding this phenomenon and, importantly, a way of controlling it. An inkjet printer is used to deliver controlled amounts of 16-mercaptohexadecanoic acid (MHA) to atomic force microscope tips in an array. Ink transport from each tip is studied as a function of the number of drops delivered. We show a nonlinear dependence of transport rates on the number of drops that arises from surface-area-dependent dissolution of MHA. From this work, MHA dissolution attempt frequencies were calculated to be between 1.3 x 10(9) and 4.4 x 10(9) Hz.

引用

页码：3779 / 3782

页数：4

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