Electrical conductance of atomic contacts in liquid environments

被引：50

作者：

Grüter, L ^{[1
]}

González, MT ^{[1
]}

Huber, R ^{[1
]}

Calame, M ^{[1
]}

Schönenberger, C ^{[1
]}

机构：

[1] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

来源：

SMALL | 2005年 / 1卷 / 11期

关键词：

atomic contacts; break junction; charge transport; molecular electronics; nanostructures;

D O I：

10.1002/smll.200500145

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An exploration of the influence of solvents on the electronic properties of atomic contacts was analyzed. Deionized water, dichloromethane (DCM), dimethylsulfoxide (DMSO), octane, and toluene were used as solvents. Microfabricated break junctions was used for the study of single-molecule devices in a liquid environment. It was shown that the solvent significantly affects the tunneling regime and the confinement of the liquid can lead to molecular layering effects within the gap. It was also found that a layering of the octane molecules at short inter-electrode separations causes the shortening of the slope in molecule's gap sizes. The effective shortening of the gap becomes smaller due to the mechanical resistance opposed by the layered octane molecules in the electrodes.

引用

页码：1067 / 1070

页数：4

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