NDLI: Electrical conduction of thiol modified 60bp Poly(dG)-poly DNA molecules through Au nanoparticles

Content Provider	Springer Nature Link
Author	Hwang, Jongseung Ahn, David Hong, Suheon Kim, Hyungkwon Hwang, Sungwoo
Copyright Year	2005
Abstract	A novel transport measurement scheme of 60 base pairs of poly (dG) -poly (dC) DNA molecules using Au nanoparticles is devised and implemented. Thiol (-SH) terminations are synthesized at both 5’ and 3’ ends of the double stranded DNA molecules and they can be chemisorbed on the Au surface through sulfur atoms by covalent bonding. These thiol-modified ends make chemical bindings with Au nanoparticles and Au nano-gap electrodes, forming a stable electrode-DNA-nanoparticle-DNA-electrode conduction channel. This transport channel is self-formed and is stable due to robust bonding of thiol and Au. The current-voltage characteristic measured from our device shows a nonlinear behavior and the voltage gap is comparable to the result of previous experiment using the same molecules. This self-trapping method by thiol modified DNA molecules would also be a promising technique for efficient nanoparticle trapping.
Starting Page	2138
Ending Page	2144
Page Count	7
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	19
Issue Number	11
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2005-01-01
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Au Nanoparticle DNA Molecule Self-trapping Method Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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