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Electrostatic tweezer for droplet manipulation

Proceedings of the National Academy of Sciences - PNAS, 2022-01, Vol.119 (2) [Peer Reviewed Journal]

Copyright © 2022 the Author(s). Published by PNAS. ;Copyright National Academy of Sciences Jan 11, 2022 ;Copyright © 2022 the Author(s). Published by PNAS. 2022 ;ISSN: 0027-8424 ;EISSN: 1091-6490 ;DOI: 10.1073/pnas.2105459119 ;PMID: 34992136

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  • Title:
    Electrostatic tweezer for droplet manipulation
  • Author: Jin, Yuankai ; Xu, Wanghuai ; Zhang, Huanhuan ; Li, Ruirui ; Sun, Jing ; Yang, Siyan ; Liu, Minjie ; Mao, Haiyang ; Wang, Zuankai
  • Subjects: Acoustics ; Additives ; Droplets ; Electrostatic properties ; Magnetics ; Medical research ; Optical Tweezers ; Physical Sciences ; Raman spectroscopy ; Spectrum Analysis, Raman ; Static Electricity ; Substrates
  • Is Part Of: Proceedings of the National Academy of Sciences - PNAS, 2022-01, Vol.119 (2)
  • Description: Various physical tweezers for manipulating liquid droplets based on optical, electrical, magnetic, acoustic, or other external fields have emerged and revolutionized research and application in medical, biological, and environmental fields. Despite notable progress, the existing modalities for droplet control and manipulation are still limited by the extra responsive additives and relatively poor controllability in terms of droplet motion behaviors, such as distance, velocity, and direction. Herein, we report a versatile droplet electrostatic tweezer (DEST) for remotely and programmatically trapping or guiding the liquid droplets under diverse conditions, such as in open and closed spaces and on flat and tilted surfaces as well as in oil medium. DEST, leveraging on the coulomb attraction force resulting from its electrostatic induction to a droplet, could manipulate droplets of various compositions, volumes, and arrays on various substrates, offering a potential platform for a series of applications, such as high-throughput surface-enhanced Raman spectroscopy detection with single measuring time less than 20 s.
  • Publisher: United States: National Academy of Sciences
  • Language: English
  • Identifier: ISSN: 0027-8424
    EISSN: 1091-6490
    DOI: 10.1073/pnas.2105459119
    PMID: 34992136
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    MEDLINE
    PubMed Central
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