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Electroactive micro and nanowells for optofluidic storage

Cordovez, Bernardo and Psaltis, Demetri and Erickson, David (2009) Electroactive micro and nanowells for optofluidic storage. Optics Express, 17 (23). pp. 21134-21148. ISSN 1094-4087.

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This paper reports an optofluidic architecture which enables reversible trapping, detection and long term storage of spectrally multiplexed semiconductor quantum dot cocktails in electrokinetically active wells ranging in size from 200nm to 5μm. Here we describe the microfluidic delivery of these cocktails, fabrication method and principal of operation for the wells, and characterize the readout capabilities, storage and erasure speeds, internal spatial signal uniformity and potential storage density of the devices. We report storage and erase speeds of less than 153ms and 30ms respectively and the ability to provide 6-bit storage in a single 200nm well through spectral and intensity multiplexing. Furthermore, we present a novel method for enabling passive long term storage of the quantum dots in the wells by transporting them through an agarose gel matrix. We envision that this technique could find eventual application in fluidic memory or display devices.

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Additional Information:© 2009 Optical Society of America. Received 7 Jul 2009; revised 28 Oct 2009; accepted 28 Oct 2009; published 5 Nov 2009. This work is supported by National Science Foundation through the Sensors and Sensor Networks program under Grant No. NSF/CTS 0529045 and by the Defense Advanced Research Projects Agency through the Center for Optofluidic Integration funded under the University Photonics Research program.
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NSFNSF/CTS 0529045
Defense Advanced Research Projects Agency through the Center for Optofluidic IntegrationUNSPECIFIED
Issue or Number:23
Classification Code:OCIS codes: (250.5590) Quantum-well, -wire and -dot devices; (210.4680) Optical memories; (260.2510) Fluorescence.
Record Number:CaltechAUTHORS:20091210-092703084
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Official Citation:Bernardo Cordovez, Demetri Psaltis, and David Erickson, "Electroactive micro and nanowells for optofluidic storage," Opt. Express 17, 21134-21148 (2009)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:16938
Deposited By: Tony Diaz
Deposited On:05 Jan 2010 00:30
Last Modified:03 Oct 2019 01:19

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