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Optofluidic Storage

[+] Author Affiliations
Bernardo Cordovez, David Erickson

Cornell University, Ithaca, NY

Paper No. IMECE2009-10320, pp. 1487-1490; 4 pages
doi:10.1115/IMECE2009-10320
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4382-6 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

Optical storage capacity in devices such as DVDs is fundamentally restricted by the diffraction limit of light. We present an optofluidic approach which exploits nanofluidic manipulation of quantum dot cocktails to achieve spectrally multiplexed data storage in a traditional planar format. Quantum dot cocktails are delivered to the vicinity of a nanowell through pressure driven flow and are subsequently trapped and stored electrokinetically. Once in the nanowells, they are excited with a blue light source and their discrete spectrographic signal is captured through a fiber spectrometer. Data erasure is performed by reversing the polarity of the applied electrical field which ejects the nanocrystals. We also extend this analysis for microwell traps which could find use in visual display applications, as well as present a method by which the fluorescent signal can be controlled and retained over various timescales.

Copyright © 2009 by ASME
Topics: Storage

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