A novel method to assemble SWNTs into patterns

Single-wall carbon nanotubes (SWNTs) have been assembled into uniform nanoscale diameter strands patterns using a simple microfluidic technique by Yang et al. By controlling hydrophilic/hydrophobic properties of photoresist resin pattern and silicon oxide substrate, they successfully obtained align SWNTs strands with desired diameter and length after processed twice. The method provides a simple and effective way to build organized SWNTs strands pattern in large scale. After the transfer to Au electrodes surfaces, the SWNTs strands can bridge different gaps to fabricate CNTFETs with good performance.

SWNTs are considered as a kind of promising building block in the future silicon-based electronic technology. As-produced SWNTs are highly entangled, and the diameter of the nanotubes bundles is always tens of nanometers which might limit their real applications. Hence, how to deposit the SWNTs pattern with controllable density,orientation and narrow width on electrodes to get a device with good electrical property is a key challenge for the electrical engineers.You can find out more about their work by reading the article in Nano-Micro Letters.

 Danna Yang, Lin Wang, Xiaoxian Zhang, Dongwei Wang, Zhiqiang Shen and Sai Li, “Alignment of Nanoscale Single-Walled Carbon Nanotubes Strands”, Nano-Micro Lett. 3 (3), 146-152 (2011). doi:10.3786/nml.v3i3.p146-152

Recommended byJiyun Lu.

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2 Responses

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