Effects of ionic surfactant adsorption on single-walled carbon nanotube thin film devices in aqueous solutions

被引：27

作者：

Fu, Q ^{[1
]}

Liu, J ^{[1
]}

机构：

[1] Duke Univ, Dept Chem, Durham, NC 27708 USA

来源：

LANGMUIR | 2005年 / 21卷 / 04期

关键词：

D O I：

10.1021/la047561e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Field-effect transistors were fabricated using high-density single-walled carbon nanotube (SWNT) thin films directly grown on suitable substrates. Such approach eliminated the variations of device behaviors in individual SWNT devices by utilizing a large number of SWNTs in each device. We have found that the behaviors of such devices are closely related to the surface charge densities around SWNTs in aqueous solutions. Adsorption of ionic surfactants on the surface could significantly modulate the device characteristics, which could be detected by measuring the conductance of the devices. The devices could be tuned to be sensitive to either anionic or cationic surfactants by tailoring the surface properties of SiO2 substrates around SWNTs. This effect could be potentially used to design chemical and biological sensors.

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收藏

页码：1162 / 1165

页数：4

相关论文

共 25 条

[1] Carbon nanotube electronics [J].

Appenzeller, J ;

Knoch, J ;

Martel, R ;

Derycke, V ;

Wind, SJ ;

Avouris, P .

IEEE TRANSACTIONS ON NANOTECHNOLOGY, 2002, 1 (04) :184-189

[2] Enzyme-coated carbon nanotubes as single-molecule biosensors [J].

Besteman, K ;

Lee, JO ;

Wiertz, FGM ;

Heering, HA ;

Dekker, C .

NANO LETTERS, 2003, 3 (06) :727-730

[3] Charge transfer from ammonia physisorbed on nanotubes -: art. no. 218301 [J].

Bradley, K ;

Gabriel, JCP ;

Briman, M ;

Star, A ;

Grüner, G .

PHYSICAL REVIEW LETTERS, 2003, 91 (21) :1-218301

[4] An investigation of the mechanisms of electronic sensing of protein adsorption on carbon nanotube devices [J].

Chen, RJ ;

Choi, HC ;

Bangsaruntip, S ;

Yenilmez, E ;

Tang, XW ;

Wang, Q ;

Chang, YL ;

Dai, HJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (05) :1563-1568

[5] Noncovalent functionalization of carbon nanotubes for highly specific electronic biosensors [J].

Chen, RJ ;

Bangsaruntip, S ;

Drouvalakis, KA ;

Kam, NWS ;

Shim, M ;

Li, YM ;

Kim, W ;

Utz, PJ ;

Dai, HJ .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (09) :4984-4989

[6] Modification of quartz surfaces using cationic surfactant solutions [J].

Churaev, NV ;

Sergeeva, IP ;

Sobolev, VD ;

Jacobasch, HJ ;

Weidenhammer, P ;

Schmitt, FJ .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2000, 164 (2-3) :121-129

[7] Extreme oxygen sensitivity of electronic properties of carbon nanotubes [J].

Collins, PG ;

Bradley, K ;

Ishigami, M ;

Zettl, A .

SCIENCE, 2000, 287 (5459) :1801-1804

[8] Nanowire nanosensors for highly sensitive and selective detection of biological and chemical species [J].

Cui, Y ;

Wei, QQ ;

Park, HK ;

Lieber, CM .

SCIENCE, 2001, 293 (5533) :1289-1292

[9] Chemical vapor depositions of single-walled carbon nanotubes catalyzed by uniform Fe2O3 nanoclusters synthesized using diblock copolymer micelles [J].

Fu, Q ;

Huang, SM ;

Liu, J .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (20) :6124-6129

[10] High-mobility nanotube transistor memory [J].

Fuhrer, MS ;

Kim, BM ;

Durkop, T ;

Brintlinger, T .

NANO LETTERS, 2002, 2 (07) :755-759