DNA Functionalization of Carbon Nanotubes: Application in Device DesignNanotubes as FETs: Two RoadblocksNon-covalent DNA functionalization of Nanotubes2ALD of High-κ Dielectrics4ReferencesDNA Functionalization of Carbon Nanotubes: Application in Device Design Patrick BennetNanotubes as FETs: Two Roadblocks•Characteristic discrimination–Metallic vs. Semiconducting–Chirality and diameter•Incompatibility with ALD processes1–Lack of functional groups•Good for transport propertiesNon-covalent DNA functionalization of Nanotubes2•π stacking of nucleotides–delocalized molecular orbitals •Helical or linear adsorption•Binding energy comparable to binding of nanotubes•Partial separation via ion exchange chromatography3 •High dispersion efficiencyWikipediaALD of High-κ Dielectrics4•DNA act as reaction site for ALD•Reported oxide thickness with reliable device performance as low as 2nm5•Series capacitance between oxide and nanotube dominated by quantum capacitance•60 mV/decade subthreshold switching (theoretical limit)•High Transconductance•Ion/Iof>104 at TOX=2nmReferences1. Farmer, D; Gordon, R. Electrochem. Solid-State Let. 2005, 8, G892. Zheng, M; Et. Al. Nature Mat. 2003, 2, 338-3423. Arnold, M; Et. Al. Nature Nano. 2006, 1, 60-654. Lu, Y; Et. Al. J. Am. Chem. Soc. 2006, 128, 3518-35195. Javey, A; Et. Al. Nature Mat. 2002, 1,
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