Stimulus-responsive colloidal sensors with fast holographic readout

Chen Wang, Henrique W. Moyses, David G. Grier

    Research output: Contribution to journalArticle

    Abstract

    Colloidal spheres synthesized from polymer gels swell by absorbing molecules from solution. The resulting change in size can be monitored with nanometer precision using holographic video microscopy. When the absorbate is chemically similar to the polymer matrix, swelling is driven primarily by the entropy of mixing, and is limited by the surface tension of the swelling sphere and by the elastic energy of the polymer matrix. We demonstrate through a combination of optical micromanipulation and holographic particle characterization that the degree of swelling of a single polymer bead can be used to measure the monomer concentration in situ with spatial resolution comparable to the size of the sphere.

    Original languageEnglish (US)
    Article number051903
    JournalApplied Physics Letters
    Volume107
    Issue number5
    DOIs
    StatePublished - Aug 3 2015

    Fingerprint

    stimuli
    readout
    swelling
    sensors
    polymers
    matrices
    beads
    interfacial tension
    monomers
    spatial resolution
    gels
    entropy
    microscopy
    molecules
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Stimulus-responsive colloidal sensors with fast holographic readout. / Wang, Chen; Moyses, Henrique W.; Grier, David G.

    In: Applied Physics Letters, Vol. 107, No. 5, 051903, 03.08.2015.

    Research output: Contribution to journalArticle

    Wang, Chen ; Moyses, Henrique W. ; Grier, David G. / Stimulus-responsive colloidal sensors with fast holographic readout. In: Applied Physics Letters. 2015 ; Vol. 107, No. 5.
    @article{413945e1b5d64b0384f66ffc63dffa0c,
    title = "Stimulus-responsive colloidal sensors with fast holographic readout",
    abstract = "Colloidal spheres synthesized from polymer gels swell by absorbing molecules from solution. The resulting change in size can be monitored with nanometer precision using holographic video microscopy. When the absorbate is chemically similar to the polymer matrix, swelling is driven primarily by the entropy of mixing, and is limited by the surface tension of the swelling sphere and by the elastic energy of the polymer matrix. We demonstrate through a combination of optical micromanipulation and holographic particle characterization that the degree of swelling of a single polymer bead can be used to measure the monomer concentration in situ with spatial resolution comparable to the size of the sphere.",
    author = "Chen Wang and Moyses, {Henrique W.} and Grier, {David G.}",
    year = "2015",
    month = "8",
    day = "3",
    doi = "10.1063/1.4928178",
    language = "English (US)",
    volume = "107",
    journal = "Applied Physics Letters",
    issn = "0003-6951",
    publisher = "American Institute of Physics Publising LLC",
    number = "5",

    }

    TY - JOUR

    T1 - Stimulus-responsive colloidal sensors with fast holographic readout

    AU - Wang, Chen

    AU - Moyses, Henrique W.

    AU - Grier, David G.

    PY - 2015/8/3

    Y1 - 2015/8/3

    N2 - Colloidal spheres synthesized from polymer gels swell by absorbing molecules from solution. The resulting change in size can be monitored with nanometer precision using holographic video microscopy. When the absorbate is chemically similar to the polymer matrix, swelling is driven primarily by the entropy of mixing, and is limited by the surface tension of the swelling sphere and by the elastic energy of the polymer matrix. We demonstrate through a combination of optical micromanipulation and holographic particle characterization that the degree of swelling of a single polymer bead can be used to measure the monomer concentration in situ with spatial resolution comparable to the size of the sphere.

    AB - Colloidal spheres synthesized from polymer gels swell by absorbing molecules from solution. The resulting change in size can be monitored with nanometer precision using holographic video microscopy. When the absorbate is chemically similar to the polymer matrix, swelling is driven primarily by the entropy of mixing, and is limited by the surface tension of the swelling sphere and by the elastic energy of the polymer matrix. We demonstrate through a combination of optical micromanipulation and holographic particle characterization that the degree of swelling of a single polymer bead can be used to measure the monomer concentration in situ with spatial resolution comparable to the size of the sphere.

    UR - http://www.scopus.com/inward/record.url?scp=84938804268&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84938804268&partnerID=8YFLogxK

    U2 - 10.1063/1.4928178

    DO - 10.1063/1.4928178

    M3 - Article

    VL - 107

    JO - Applied Physics Letters

    JF - Applied Physics Letters

    SN - 0003-6951

    IS - 5

    M1 - 051903

    ER -