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31 July 2008
Wafer Scale Synthesis of Dense Aligned Arrays of Single-Walled Carbon Nanotubes
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Here we present an easy one-step approach to pattern uniform catalyst lines for the growth of dense, aligned parallel arrays of single-walled carbon nanotubes (SWNTs) on quartz wafers by using photolithography or polydimethylsiloxane (PDMS) stamp microcontact printing (μCP). By directly doping an FeCl3/methanol solution into Shipley 1827 photoresist or polyvinylpyrrolidone (PVP), various catalyst lines can be well-patterned on a wafer scale. In addition, during the chemical vapor deposition (CVD) growth of SWNTs the polymer layers play a very important role in the formation of mono-dispersed nanoparticles. This universal and efficient method for the patterning growth of SWNTs arrays on a surface is compatible with the micro-electronics industry, thus enabling of the fabrication highly integrated circuits of SWNTs.
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Wafer Scale Synthesis of Dense Aligned Arrays of Single-Walled Carbon Nanotubes
Abstract
Here we present an easy one-step approach to pattern uniform catalyst lines for the growth of dense, aligned parallel arrays of single-walled carbon nanotubes (SWNTs) on quartz wafers by using photolithography or polydimethylsiloxane (PDMS) stamp microcontact printing (μCP). By directly doping an FeCl3/methanol solution into Shipley 1827 photoresist or polyvinylpyrrolidone (PVP), various catalyst lines can be well-patterned on a wafer scale. In addition, during the chemical vapor deposition (CVD) growth of SWNTs the polymer layers play a very important role in the formation of mono-dispersed nanoparticles. This universal and efficient method for the patterning growth of SWNTs arrays on a surface is compatible with the micro-electronics industry, thus enabling of the fabrication highly integrated circuits of SWNTs.
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Acknowledgements
This work was supported by the Army Research Office and the Office of Naval Research. We thank Prof. Jie Liu’s group at Duke University for providing assistance with AFM and Raman spectroscopy.
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