Multi-pass nanocrystal processor

M. Abolhasani, Y. Hassan, E. Kumacheva, G. D. Scholes, A. Günther

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a multiphase microfluidic (MF) platform for on-chip preparation of high quality nanocrystals (NCs) using a novel multi-stage growth strategy. To reduce the axial dispersion along the flow direction, gas-liquid segmented flow was used as the flow format. We used a relatively short (0.65 m long) silicon-based MF device in the multi-pass NC processor to prepare large CdSe NCs (-5-6 nm) that would otherwise require a microchannel longer than 5 m in a singlepass microreactor. We further employed this platform to grow an inorganic shell around the already on-chip prepared NC cores to reduce their surface defects.

Original languageEnglish (US)
Title of host publication17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
PublisherChemical and Biological Microsystems Society
Pages1893-1895
Number of pages3
ISBN (Print)9781632666246
StatePublished - 2013
Externally publishedYes
Event17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013 - Freiburg, Germany
Duration: Oct 27 2013Oct 31 2013

Publication series

Name17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
Volume3

Other

Other17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013
CountryGermany
CityFreiburg
Period10/27/1310/31/13

All Science Journal Classification (ASJC) codes

  • Bioengineering

Keywords

  • Gas-liquid segmented flow
  • Multiphase microreactor
  • Quantum dots
  • Sequential growth

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  • Cite this

    Abolhasani, M., Hassan, Y., Kumacheva, E., Scholes, G. D., & Günther, A. (2013). Multi-pass nanocrystal processor. In 17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013 (pp. 1893-1895). (17th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2013; Vol. 3). Chemical and Biological Microsystems Society.