Alignment of Nanoscale Single-Walled Carbon Nanotubes Strands

作者：Yang Danna; Wang Lin; Zhang Xiaoxian; Wang Dongwei; Shen Zhiqiang; Li Sai^*

来源：Nano-Micro Letters, 2011, 3(3): 146-152.

DOI：10.3786/nml.v3i3.p146-152

• Single-walled carbon nanotubes
• Microchannel
• Capillary force
• Carbon nanotube field effect transistor

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 having nanoscale 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 CAT-PET with ON/OFF ratio around 10(6). This result suggests a promising and simple strategy for assembling well-aligned SWNTs into CNTFET device with good electrical performance.

• 出版日期2011
• 单位中国人民解放军军事医学科学院; 四川大学