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  1. Article ; Online: Capillary imbibition of confined monodisperse emulsions in microfluidic channels.

    Norouzi Darabad, Masoud / Singha, Sagnik / Vanapalli, Siva A / Vaughn, Mark W / Blawzdziewicz, Jerzy

    Soft matter

    2024  

    Abstract: We study imbibition of a monodisperse emulsion into high-aspect ratio microfluidic channels with the ... ...

    Abstract We study imbibition of a monodisperse emulsion into high-aspect ratio microfluidic channels with the height
    Language English
    Publishing date 2024-04-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2191476-X
    ISSN 1744-6848 ; 1744-683X
    ISSN (online) 1744-6848
    ISSN 1744-683X
    DOI 10.1039/d4sm00179f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Mechanisms of spontaneous chain formation and subsequent microstructural evolution in shear-driven strongly confined drop monolayers.

    Singha, Sagnik / Malipeddi, Abhilash Reddy / Zurita-Gotor, Mauricio / Sarkar, Kausik / Shen, Kevin / Loewenberg, Michael / Migler, Kalman B / Blawzdziewicz, Jerzy

    Soft matter

    2019  Volume 15, Issue 24, Page(s) 4873–4889

    Abstract: It was experimentally demonstrated by Migler and his collaborators [Phys. Rev. Lett., 2001, 86, 1023; Langmuir, 2003, 19, 8667] that a strongly confined drop monolayer sheared between two parallel plates can spontaneously develop a flow-oriented drop- ... ...

    Abstract It was experimentally demonstrated by Migler and his collaborators [Phys. Rev. Lett., 2001, 86, 1023; Langmuir, 2003, 19, 8667] that a strongly confined drop monolayer sheared between two parallel plates can spontaneously develop a flow-oriented drop-chain morphology. Here we show that the formation of the chain-like microstructure is driven by far-field Hele-Shaw quadrupolar interactions between drops, and that drop spacing within chains is controlled by the effective drop repulsion associated with the existence of confinement-induced reversing streamlines, i.e., the swapping trajectory effect. Using direct numerical simulations and an accurate quasi-2D model that incorporates quadrupolar and swapping-trajectory contributions, we analyze microstructural evolution in a monodisperse drop monolayer. Consistent with experimental observations, we find that drop spacing within individual chains is usually uniform. Further analysis shows that at low area fractions all chains have the same spacing, but at higher area fractions there is a large spacing variation from chain to chain. These findings are explained in terms of uncompressed and compressed chains. At low area fractions most chains are uncompressed (spacing equals lst, which is the stable separation of an isolated pair). At higher area fractions compressed chains (with tighter spacing) are formed in a process of chain zipping along y-shaped structural defects. We also discuss the relevance of our findings to other shear-driven systems, such as suspensions of spheres in non-Newtonian fluids.
    Language English
    Publishing date 2019-06-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 2191476-X
    ISSN 1744-6848 ; 1744-683X
    ISSN (online) 1744-6848
    ISSN 1744-683X
    DOI 10.1039/c9sm00536f
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

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