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Vol. 3 No. 3 (2011)

Alignment of Nanoscale Single-Walled Carbon Nanotubes Strands

https://doi.org/10.1007/BF03353665
Danna Yang
School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
Lin Wang
School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
Xiaoxian Zhang
School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
Dongwei Wang
School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
Zhiqiang Shen
Academy of Military Medical sciences, Chinese PLA Center for Disease Control & Prevention, Tianjin, 30050, China
Sai Li
School of Chemical Engineering, Sichuan University, Chengdu, 610065, China

Corresponding Author: Sai Li

lisai@scu.edu.cn

Nano-Micro Letters, Vol. 3 No. 3 (2011), Article Number: 146-152

Abstract

Depositing single-walled carbon nanotubes (SWNTs) with controllable density, pattern and orientation on electrodes presents a challenge in today’s research. Here, we report a novel solvent evaporation method to align SWNTs in patterns havingnanoscale width and micronscale length. SWNTs suspension has been introduced dropwise onto photoresist resin microchannels; and the capillary force can stretch and align SWNTs into strands with nanoscale width in the microchannels. Then these narrow and long aligned SWNTs patterns were successfully transferred to a pair of gold electrodes with different gaps to fabricate carbon nanotube field-effect transistor (CNTFET). Moreover, the electrical performance of the CNTFET show that the SWNTs strands can bridge different gaps and fabricate good electrical performance CNTFET with ON/OFF ratio around 106. This result suggests a promising and simple strategy for assembling well-aligned SWNTs into CNTFET device with good electrical performance.

Keywords

Single-walled carbon nanotubes Microchannel Capillary force Carbon nanotube field effect transistor
Yang, Danna, Lin Wang, Xiaoxian Zhang, Dongwei Wang, Zhiqiang Shen, and Sai Li. 2011. “Alignment of Nanoscale Single-Walled Carbon Nanotubes Strands”. Nano-Micro Letters 3 (3):146-52. https://doi.org/10.1007/BF03353665.
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