Interaction between carbon nanotubes and metals: Electronic properties, stability, and sensing

被引：13

作者：

Fuchs, F. ^{[1
]}

Zienert, A. ^{[1
]}

Wagner, C. ^{[1
]}

Schuster, J. ^{[2
]}

Schulz, S. E. ^{[1
,2
]}

机构：

[1] Ctr Microtechnol, D-09126 Chemnitz, Germany

[2] Fraunhofer Inst Elect Nano Syst, D-09126 Chemnitz, Germany

来源：

MICROELECTRONIC ENGINEERING | 2015年 / 137卷

关键词：

Carbon nanotube; Metal decoration; Metal contact; Acceleration sensor; Density functional theory; Adatom stability; BAND-GAPS; TRANSPORT; NANOPARTICLES; PALLADIUM; PLATINUM;

D O I：

10.1016/j.mee.2015.02.003

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The interactions between carbon nanotubes (CNTs) and metal adatoms as well as metal contacts are studied by means of ab initio electronic structure calculations. We show that the electronic properties of a semiconducting (8,4) CNT can be modified by small amounts of Pd adatoms. Such a decoration conserves the piezoelectric properties of the CNT. Besides the electronic influence, the stability of a single adatom, which is of big importance for future technology applications, is investigated as well. We find only small energy barriers for the diffusion of a Pd adatom on the CNT surface. Thus, single Pd adatoms will be mobile at room temperature. Finally we present results for the interaction between a metallic (6,0) CNT and metal surfaces. Binding energies and distances for Al, Cu, Pd, Ag, Pt, and Au are discussed and compared, showing remarkable agreement between the interaction of single metal atoms and metal surfaces with CNTs. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：124 / 129

页数：6

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