DocumentCode :
1816241
Title :
Pressure dependence of particle transport through resizable nanopores
Author :
Willmott, Geoff R. ; Yu, Samuel S C ; Vogel, Robert
Author_Institution :
MacDiarmid Inst. for Adv. Mater. & Nanotechnol., New Zealand
fYear :
2010
fDate :
22-26 Feb. 2010
Firstpage :
128
Lastpage :
131
Abstract :
Nanoparticles between 200 nm and 780 nm in diameter have been electronically detected as they passed through resizable nanopores. The dominant mechanism of particle transport was via pressure-driven flow. In each of four experiments using a variety of particle sizes, types and buffers, the rate of translocation detection increased linearly with applied pressure up to at least 1.0 kPa. Three different methods for nondestructive determination of the pore size yielded consistent results, demonstrating the utility and application of the Nernst-Planck equation for analyzing particle transport. Resizable nanopore technology has wide-ranging potential for nanoscale sensing; the range of particle sizes in the present study is of interest for virus detection applications.
Keywords :
electrokinetic effects; glass; nanoporous materials; nondestructive testing; particle size; polymers; Nernst-Planck equation; SiO2; buffers; electronic detection; nanoscale sensing; nondestructive determination; particle sizes; pore size; pressure 1.0 kPa; pressure dependent particle transport; pressure-driven flow; resizable nanopore technology; size 200 nm; size 780 nm; translocation detection; virus detection; Current measurement; Electrokinetics; Nanobioscience; Nanoscale devices; Pulse measurements; Resistance; Uncertainty; Nernst-Planck; nanopore; nanosphere; pressure-driven flow; translocation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nanoscience and Nanotechnology (ICONN), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5261-3
Electronic_ISBN :
978-1-4244-5262-0
Type :
conf
DOI :
10.1109/ICONN.2010.6045207
Filename :
6045207
Link To Document :
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