1. DNA Functionalization of Carbon Nanotubes: Application in Device Design
Patrick Bennett

2. Nanotubes as FETs: Two Roadblocks
Characteristic discrimination
Metallic vs. Semiconducting
Chirality and diameter
Incompatibility with ALD processes1
Lack of functional groups
Good for transport properties

3. Non-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 efficiency
Wikipedia

4. ALD 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/Ioff>104 at TOX=2nm

5. References
Farmer, D; Gordon, R. Electrochem. Solid-State Lett. 2005, 8, G89
Zheng, M; Et. Al. Nature Mat. 2003, 2,
Arnold, M; Et. Al. Nature Nano. 2006, 1, 60-65
Lu, Y; Et. Al. J. Am. Chem. Soc. 2006, 128,
Javey, A; Et. Al. Nature Mat. 2002, 1,