Bi-directional transportation of micro-agents induced by symmetry-broken acoustic streaming

S. Mohanty (Corresponding Author), U. Siciliani de Cumis, M. Solsona, S. Misra (Corresponding Author)

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    16 Citations (Scopus)
    119 Downloads (Pure)


    We show that vibrating protrusions inside a microchannel are capable of steering fluid away from their relative orientation. This phenomenon is brought forth by symmetry-broken design of these protrusions. Vibration of these asymmetric protrusions is reciprocated in the streaming effect at the boundary layers of the channel thus inducing a net fluid flow. Additionally, we show that the flow direction is sensitive to switching acoustic frequencies. This acoustically-induced flow has the potential for transportation of nanoparticles as well as complex micro-structures. We hereby demonstrate this utility for contactless actuation of flagellar micro-agents as a foreground towards targeted drug release.
    Original languageEnglish
    Article number 35352
    Number of pages5
    JournalAIP advances
    Issue number3
    Publication statusPublished - 29 Mar 2019


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