Enhanced tunneling conductivity induced by gelation of attractive colloids

被引：10

作者：

Nigro, Biagio ^{[1
]}

Grimaldi, Claudio ^{[1
]}

Ryser, Peter ^{[1
]}

Varrato, Francesco ^{[2
]}

Foffi, Giuseppe ^{[2
,3
]}

Lu, Peter J. ^{[4
,5
]}

机构：

[1] Ecole Polytech Fed Lausanne, LPM, CH-1015 Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, Inst Theoret Phys, CH-1015 Lausanne, Switzerland

[3] Univ Paris 11, UMR 8502, Phys Solides Lab, F-91405 Orsay, France

[4] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[5] Harvard Univ, SEAS, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW E | 2013年 / 87卷 / 06期

基金：

瑞士国家科学基金会;

关键词：

PERCOLATION; PARTICLES;

D O I：

10.1103/PhysRevE.87.062312

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We show that the formation of a gel by conducting colloidal particles leads to a dramatic enhancement in bulk conductivity, due to interparticle electron tunneling, combining predictions from molecular-dynamics simulations with structural measurements in an experimental colloid system. Our results show how colloidal gelation can be used as a general route to huge enhancements of conductivity, and suggest a feasible way for developing cheap materials with novel properties and low metal content.

引用

页数：8

共 35 条

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