Rapid measurement of single-molecule conductance

被引：30

作者：

Hihath, Joshua ^{[1
]}

Tao, Nongjian ^{[1
]}

机构：

[1] Arizona State Univ, Dept Elect Engn, Ctr Solid State Elect, Tempe, AZ 85287 USA

来源：

NANOTECHNOLOGY | 2008年 / 19卷 / 26期

关键词：

D O I：

10.1088/0957-4484/19/26/265204

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new device for measuring the conductance values of single-molecule junctions which are covalently bound to two electrodes is presented. The system works by repeatedly bringing two electrodes into and out of contact in a solution of molecules while measuring the current between the two electrodes during withdrawal. When molecules connect the two electrodes, steps occur in the current transient, and a statistical analysis provides the most probable conductance value for a single-molecule junction. This system provides an order of magnitude increase in speed over previous devices used for single-molecule conductance measurements, and the applicability of this tool is demonstrated in array based measurements as well as in biologically relevant samples where the conductances of single amino acid residues are measured.

引用

页数：7

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