Ultra-rapid and relative humidity independent drying of nanochannels

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    Abstract

    We observed that water-filled nanochannels dried up to 1000 times faster than predicted by vapor diffusional drying. Here we show that this ultra-rapid water transport is caused by very sharp channel corners siphoning (wicking) the water to the channel exit before it evaporates. Evidence is also provided that these sharp corners make the drying process independent of the relative humidity (RH) of the environment up to an RH of more than 0.9. To our knowledge this is the first time that nanochannel drying has been observed, and both the acceleration of drying and the independence of RH are highly surprising.
    Original languageUndefined
    Title of host publicationMicroTAS 2005 Conference -9th International Conference on Miniaturized Systems for Chemistry and Life Sciences
    EditorsK.F Jensen, J. Han, D.J. Harrison, J. Voldman
    Place of PublicationSan Diego, CA, USA
    PublisherTransducers Research Foundation, Inc.
    Pages1258-1260
    Number of pages3
    ISBN (Print)9780444511003
    Publication statusPublished - 2005
    Event9th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2005 - Boston, United States
    Duration: 9 Oct 200513 Oct 2005
    Conference number: 9

    Publication series

    NameMicro total analysis systems 2005
    PublisherTransducer Research Foundation
    Volume2

    Conference

    Conference9th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2005
    Abbreviated titleMicroTAS
    CountryUnited States
    CityBoston
    Period9/10/0513/10/05

    Keywords

    • EWI-20073
    • Nanofluidics
    • Drying
    • IR-76734
    • Corner flow
    • METIS-224695
    • wicking

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