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Cited by 364

The DOI matches its Crossref record; 13 of the 13 references it cites were found in a registry or an index.

DNA-Mediated Fluctuations in Ionic Current through Silicon Oxide Nanopore Channels

Chang, H., Kosari, F., Andreadakis, G., Alam, M. A., Vasmatzis, G., Bashir, R.·2004·Nano Letters

Abstract

Single molecule sensors in which nanoscale pores within biological or artificial membranes act as mechanical gating elements are very promising devices for the rapid characterization and sequencing of nucleic acid molecules. The two terminal electrical measurements of translocation of polymers through single ion channels and that of ssDNA molecules through protein channels have been demonstrated, and have sparked tremendous interest in such single molecule sensors. The prevailing view regarding the nanopore sensors is that there exists no electrical interaction between the nanopore and the translocating molecule, and that all nanopore sensors reported to-date, whether biological or artificial, operate as a coulter-counter, i.e., the ionic current measured across the pore decreases (is mechanically blocked) when the DNA molecule transverses through the pore. We have fabricated nanopore “channel” sensors with a silicon oxide inner surface, and our results challenge the prevailing view of exclusive mechanical interaction during the translocation of dsDNA molecules through these channels. We demonstrate that the ionic current can actually increase due to electrical gating of surface current in the channel due to the charge on the DNA itself.

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Metadata

Authors
Chang, H., Kosari, F., Andreadakis, G., Alam, M. A., Vasmatzis, G., & Bashir, R.
Venue
Nano Letters
Published
2004-07-07
Volume
4
Issue
8
Pages
1551-1556
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2114880494
Cited by
364
References
13
FWCI
16.40
Type
journal article
Language
en
Open access
closed

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