We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion that the energy level alignment between electrode and SWCNTs can be affected by DNA immobilization and hybridization. The study of location-selective capping using photoresist provides comprehensive evidence that the sensing of DNA is dominated by the change in metal-SWCNT junctions rather than the channel conductance.

Electricaldetection of hybridization and threading intercalation of deoxyribonucleic acid using carbon nanotube network field effect transistors. Applied physics letters, 89(23).

Effect of TiO2 mesoporous layer and surface treatments in determining efficiencies in antimony sulfide-(Sb2S3) sensitized solar cells

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