Title :
Electrical Transport through Single DNA Molecules by Distinct Tip-Surface Configurations
Author :
Qian, Jun ; Liao, Sicheng ; Stroscio, Michael A. ; Dutta, Mitra ; Xu, Song
Author_Institution :
Dept. Electr. & Comput. Eng., Univ. of Illinois at Chicago, Chicago, IL
Abstract :
In this paper, gold-DNA-gold nanoparticle (GNP) complexes were studied by scanning tunneling microscopy (STM). I-V characteristics were collected from distinct positions of gold nanoparticle clusters and qualitatively explained by a tip- surface configuration model. Double-stranded DNA (dsDNA) of poly(dT)-poly(dA) was found to be slightly n-type semiconductor by theoretical simulation of the S-shaped I-V curves employing the Landauer formalism.
Keywords :
DNA; gold; molecular electronics; nanoelectronics; nanoparticles; scanning tunnelling microscopy; Au; DNA; Landauer formalism; electrical transport; nanoparticle clusters; scanning tunneling microscopy; tip-surface configurations; Atomic force microscopy; DNA; Economic indicators; Gold; Physics computing; Semiconductor films; Shape; Substrates; Tunneling; Voltage;
Conference_Titel :
Computational Electronics, 2009. IWCE '09. 13th International Workshop on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3925-6
Electronic_ISBN :
978-1-4244-3927-0
DOI :
10.1109/IWCE.2009.5091111
