Advanced Piezoresistance of Extended Metal-Insulator Core-Shell Nanoparticle Assemblies

被引：19

作者：

Athanassiou, E. K. ^{[1
]}

Krumeich, F. ^{[2
]}

Grass, R. N. ^{[1
]}

Stark, W. J. ^{[1
]}

机构：

[1] ETH, Inst Chem & Bioengn, CH-8093 Zurich, Switzerland

[2] ETH, Inorgan Chem Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 16期

基金：

瑞士国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.166804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Assembled metal-insulator nanoparticles with a core-shell geometry provide access to materials containing a large number (> 10(6)) of tunneling barriers. We demonstrate the production of ceramic coated metal nanoparticles exhibiting an exceptional pressure-sensitive conductivity. We further show that graphene bi- and trilayers on 20 nm copper nanoparticles are insulating in such a core-shell geometry and show a similar pressure-dependent conductivity. This demonstrates that core-shell metal-insulator assemblies offer a route to alternative sensing materials.

引用

页数：4

共 40 条

[1] Large-scale production of carbon-coated copper nanoparticles for sensor applications [J].

Athanassiou, EK ;

Grass, RN ;

Stark, WJ .

NANOTECHNOLOGY, 2006, 17 (06) :1668-1673

[2] Preparation of homogeneous, bulk nanocrystalline Ni/Mo alloys with tripled vickers hardness using flame-made metal nanoparticles [J].

Athanassiou, Evagelos K. ;

Grass, Robert N. ;

Osterwalder, Neil ;

Stark, Wendelin J. .

CHEMISTRY OF MATERIALS, 2007, 19 (20) :4847-4854

[3] Insulator coated metal nanoparticles with a core/shell geometry exhibit a temperature sensitivity similar to advanced spinels [J].

Athanassiou, Evagelos K. ;

Mensing, Christian ;

Stark, Wendelin J. .

SENSORS AND ACTUATORS A-PHYSICAL, 2007, 138 (01) :120-129

[4] A metal-polymer composite with unusual properties [J].

Bloor, D ;

Donnelly, K ;

Hands, PJ ;

Laughlin, P ;

Lussey, D .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (16) :2851-2860

[5] Electronic states of graphene nanoribbons studied with the Dirac equation [J].

Brey, L ;

Fertig, HA .

PHYSICAL REVIEW B, 2006, 73 (23)

[6] Electromechanical properties of metallic, quasimetallic, and semiconducting carbon nanotubes under stretching [J].

Cao, J ;

Wang, Q ;

Dai, HJ .

PHYSICAL REVIEW LETTERS, 2003, 90 (15) :4

[7] CONDUCTING FILLED POLYMERS [J].

CARMONA, F .

PHYSICA A, 1989, 157 (01) :461-469

[8] Piezoresistive behavior study on finger-sensing silicone rubber/graphite nanosheet nanocomposites [J].

Chen, Ling ;

Chen, Guohua ;

Lu, Liang .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (06) :898-904

[9] Electron-electron interactions on the edge states of graphene: A many-body configuration interaction study [J].

Dutta, Sudipta ;

Lakshmi, S. ;

Pati, Swapan K. .

PHYSICAL REVIEW B, 2008, 77 (07)

[10]

*EPAPS, EPRLTAO101005843

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