Synthesis of Single-Walled Carbon Nanotubes on Dielectric Substrates and Fabrication of Single-Walled Carbon Nanotube Based Electronic Devices
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Date: 08-24-2006
Start Time:
3:00pm
End Time: 4:00pm
Speaker: Chenguang Lu
From:
Duke University
Location: Interschool Lab, 7th floor, Schapiro/CEPSR
Hosted by:
Center for Integrated Science
Abstract:
Single-walled carbon nanotubes (SWNTs) are attracting researchers from many fields due to their unique properties. This type of materials possesses electronic band structures that are tunable by their diameter and chirality. In this presentation, carbon feeding rate is shown to be related with the diameter distributions of SWNTs produced by chemical vapor deposition method. Detailed analysis reveals that conditioned activations of nucleating nanoparticles, together with the traditional VLS mechanism, determines the growth of SWNTs in a CVD process.
Two types of electronic devices, polymer electrolyte-gated field effect transistors and Schottky diodes from asymmetric metal-SWNT contracts, were fabricated to explore possible devices applications of those SWNTs synthesized on Si/SiO2 substrates.