Suspended, straightened carbon nanotube arrays by gel chapping

Chunyan Ji; Hongbian Li; Luhui Zhang; Yu Liu; Yan Li; Yi Jia; Zhen Li; Peixu Li; Enzheng Shi; Jinquan Wei; Kunlin Wang; Hongwei Zhu; Dehai Wu; Anyuan Cao

doi:10.1021/nn2012805

Suspended, straightened carbon nanotube arrays by gel chapping

Chunyan Ji, Hongbian Li, Luhui Zhang, Yu Liu, Yan Li, Yi Jia, Zhen Li, Peixu Li, Enzheng Shi, Jinquan Wei, Kunlin Wang, Hongwei Zhu, Dehai Wu, Anyuan Cao

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

We report large-scale self-assembly of suspended, straightened, single-walled carbon nanotubes (SWNTs) across regular TiO₂ gel islands. By coating a SWNT network on top of a pool of the TiO₂ colloid and inducing a rapid drying and chapping process, initially curled, random SWNTs can be straightened into aligned arrays and suspended across the island gaps. The suspended SWNT arrays were grafted by semiconducting or metallic nanoparticles, resulting in hybrid structures with tailored and neat morphology, and enhanced photoresponse. We further demonstrate these suspended SWNTs can sustain high speed gas blowing (up to 20 m per second) reversibly for hundreds of cycles, and detect gas velocity by the resistance change.

Original language	English
Pages (from-to)	5656-5661
Number of pages	6
Journal	ACS Nano
Volume	5
Issue number	7
DOIs	https://doi.org/10.1021/nn2012805
State	Published - 26 Jul 2011
Externally published	Yes

Keywords

carbon nanotube
flow sensor
photodetector
self-assembly
suspended array

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10.1021/nn2012805

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abstract = "We report large-scale self-assembly of suspended, straightened, single-walled carbon nanotubes (SWNTs) across regular TiO2 gel islands. By coating a SWNT network on top of a pool of the TiO2 colloid and inducing a rapid drying and chapping process, initially curled, random SWNTs can be straightened into aligned arrays and suspended across the island gaps. The suspended SWNT arrays were grafted by semiconducting or metallic nanoparticles, resulting in hybrid structures with tailored and neat morphology, and enhanced photoresponse. We further demonstrate these suspended SWNTs can sustain high speed gas blowing (up to 20 m per second) reversibly for hundreds of cycles, and detect gas velocity by the resistance change.",

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author = "Chunyan Ji and Hongbian Li and Luhui Zhang and Yu Liu and Yan Li and Yi Jia and Zhen Li and Peixu Li and Enzheng Shi and Jinquan Wei and Kunlin Wang and Hongwei Zhu and Dehai Wu and Anyuan Cao",

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T1 - Suspended, straightened carbon nanotube arrays by gel chapping

AU - Ji, Chunyan

AU - Li, Hongbian

AU - Zhang, Luhui

AU - Liu, Yu

AU - Li, Yan

AU - Jia, Yi

AU - Li, Zhen

AU - Li, Peixu

AU - Shi, Enzheng

AU - Wei, Jinquan

AU - Wang, Kunlin

AU - Zhu, Hongwei

AU - Wu, Dehai

AU - Cao, Anyuan

PY - 2011/7/26

Y1 - 2011/7/26

N2 - We report large-scale self-assembly of suspended, straightened, single-walled carbon nanotubes (SWNTs) across regular TiO2 gel islands. By coating a SWNT network on top of a pool of the TiO2 colloid and inducing a rapid drying and chapping process, initially curled, random SWNTs can be straightened into aligned arrays and suspended across the island gaps. The suspended SWNT arrays were grafted by semiconducting or metallic nanoparticles, resulting in hybrid structures with tailored and neat morphology, and enhanced photoresponse. We further demonstrate these suspended SWNTs can sustain high speed gas blowing (up to 20 m per second) reversibly for hundreds of cycles, and detect gas velocity by the resistance change.

AB - We report large-scale self-assembly of suspended, straightened, single-walled carbon nanotubes (SWNTs) across regular TiO2 gel islands. By coating a SWNT network on top of a pool of the TiO2 colloid and inducing a rapid drying and chapping process, initially curled, random SWNTs can be straightened into aligned arrays and suspended across the island gaps. The suspended SWNT arrays were grafted by semiconducting or metallic nanoparticles, resulting in hybrid structures with tailored and neat morphology, and enhanced photoresponse. We further demonstrate these suspended SWNTs can sustain high speed gas blowing (up to 20 m per second) reversibly for hundreds of cycles, and detect gas velocity by the resistance change.

KW - carbon nanotube

KW - flow sensor

KW - photodetector

KW - self-assembly

KW - suspended array

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Suspended, straightened carbon nanotube arrays by gel chapping

Abstract

Keywords

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