Three-dimensional imaging of carbon nanotubes deformed by metal islands

被引：26

作者：

Cha, Judy J. ^{[1
]}

Weyland, Matthew ^{[1
,2
]}

Briere, Jean-Francois

Daykov, Ivan P.

Arias, Tomas A.

Muller, David A. ^{[1
]}

机构：

[1] Cornell Univ, Sch Appl & Engn Phys, Dept Phys, Ithaca, NY 14853 USA

[2] Monash Univ, Monash Ctr Elect Microscopy, Clayton, Vic 3800, Australia

来源：

NANO LETTERS | 2007年 / 7卷 / 12期

关键词：

D O I：

10.1021/nl072251c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the first direct three-dimensional observations of the buried interface between nanotubes and metal contacts and show that nanotubes can be deformed by the contacts, especially when the metals island rather than wet to nanotubes. Because deforming a nanotube can alter its electronic properties, the islanding metal contacts can introduce additional resistance terms beyond the already present Schottky barrier. The popular contact metal, palladium, lies on the margin between wetting and islanding, suggesting a strategy to improve the contact resistance by alloying.

引用

页码：3770 / 3773

页数：4

共 22 条

[11] Band-gap modification by radial deformation in carbon nanotubes [J].

Park, CJ ;

Kim, YH ;

Chang, KJ .

PHYSICAL REVIEW B, 1999, 60 (15) :10656-10659

[12] ENERGETICS OF NANOSCALE GRAPHITIC TUBULES [J].

ROBERTSON, DH ;

BRENNER, DW ;

MINTMIRE, JW .

PHYSICAL REVIEW B, 1992, 45 (21) :12592-12595

[13] A tunable carbon nanotube electromechanical oscillator [J].

Sazonova, V ;

Yaish, Y ;

Üstünel, H ;

Roundy, D ;

Arias, TA ;

McEuen, PL .

NATURE, 2004, 431 (7006) :284-287

[14] First-principles study of band-gap change in deformed nanotubes [J].

Shan, B ;

Lakatos, GW ;

Peng, S ;

Cho, KJ .

APPLIED PHYSICS LETTERS, 2005, 87 (17) :1-3

[15] Ab initio study of Schottky barriers at metal-nanotube contacts -: art. no. 233405 [J].

Shan, B ;

Cho, KJ .

PHYSICAL REVIEW B, 2004, 70 (23) :1-4

[16] Adhesion between single-walled carbon nanotubes [J].

Tang, T ;

Jagota, A ;

Hui, CY .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (07)

[17] Room-temperature transistor based on a single carbon nanotube [J].

Tans, SJ ;

Verschueren, ARM ;

Dekker, C .

NATURE, 1998, 393 (6680) :49-52

[18] Reversible electromechanical characteristics of carbon nanotubes under local-probe manipulation [J].

Tombler, TW ;

Zhou, CW ;

Alexseyev, L ;

Kong, J ;

Dai, HJ ;

Lei, L ;

Jayanthi, CS ;

Tang, MJ ;

Wu, SY .

NATURE, 2000, 405 (6788) :769-772

[19] The surface energy of metals [J].

Vitos, L ;

Ruban, AV ;

Skriver, HL ;

Kollar, J .

SURFACE SCIENCE, 1998, 411 (1-2) :186-202

[20] Nanomechanics of carbon tubes: Instabilities beyond linear response [J].

Yakobson, BI ;

Brabec, CJ ;

Bernholc, J .

PHYSICAL REVIEW LETTERS, 1996, 76 (14) :2511-2514

← 1 2 3 →