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Title:
Nanofluidic channels with elliptical cross sections formed using a nonlithographic process
Authors:
Czaplewski, David A.; Kameoka, Jun; Mathers, Robert; Coates, Geoffrey W.; Craighead, H. G.
Affiliation:
AA(School of Applied Physics and the Nanobiotechnology Center, Cornell University, Ithaca, New York 14853), AB(School of Applied Physics and the Nanobiotechnology Center, Cornell University, Ithaca, New York 14853), AC(Department of Chemistry and Chemical Biology and the Nanobiotechnology Center, Cornell University, Ithaca, New York 14853), AD(Department of Chemistry and Chemical Biology and the Nanobiotechnology Center, Cornell University, Ithaca, New York 14853), AE(School of Applied Physics and the Nanobiotechnology Center, Cornell University, Ithaca, New York 14853)
Publication:
Applied Physics Letters, Volume 83, Issue 23, id. 4836 (2003). (ApPhL Homepage)
Publication Date:
12/2003
Origin:
AIP
PACS Keywords:
Micro- and nano-electromechanical systems and devices, Fluidics, Flows in ducts channels nozzles and conduits, Biomedical applications of nanotechnology, Polymers and plastics, rubber, synthetic and natural fibers, organometallic and organic materials
Abstract Copyright:
2003: American Institute of Physics
DOI:
10.1063/1.1633008
Bibliographic Code:
2003ApPhL..83.4836C

Abstract

We fabricated nanofluidic channels that have elliptical cross sections with major and minor radii of less than 100 nm, without the use of electron-beam or other high-resolution lithography. The channels were formed by thermal removal of sacrificial polymer nanofibers. The sacrificial template fiber was deposited on a target substrate by electrospinning and encapsulated by a spin-on glass. The elliptical shape of the channels eliminates sharp corners, at which fluid flow is hindered, and provides convenient boundary conditions for theoretical modeling of fluid flow in the channels. Also, the spin-on glass is optically transparent and compatible with chemical analysis, thereby opening up application in biomolecular separation and single molecule analysis. Hundreds of parallel channels have also been formed by the oriented spinning process.
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