Premium
Characterization of the Conductance Mechanisms of DNA Origami by AC Impedance Spectroscopy
Author(s) -
Linko Veikko,
Paasonen SeppoTapio,
Kuzyk Anton,
Törmä Päivi,
Toppari J. Jussi
Publication year - 2009
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200900683
Subject(s) - dielectric spectroscopy , ohmic contact , conductance , conductivity , electrical impedance , characterization (materials science) , nanotechnology , materials science , dielectrophoresis , spectroscopy , ionic bonding , optoelectronics , chemistry , physics , electrical engineering , condensed matter physics , engineering , ion , electrode , layer (electronics) , quantum mechanics , organic chemistry , microfluidics , electrochemistry
The electrical characteristics of single rectangular DNA origami structures are explored by trapping them via dielectrophoresis between nanoelectrodes (see image) and determining their conductivity mechanisms by AC impedance spectroscopy, combined with a detailed equivalent‐circuit model. The results show that the nature of the DNA origami conductivity is not purely Ohmic but that it is a combination of an ionic diffusion and electronic conductivity.