Flux reversal in a two-state symmetric optical thermal ratchet

Sang Hyuk Lee, David G. Grier

    Research output: Contribution to journalArticle

    Abstract

    A Brownian particle's random motions can be rectified by a periodic potential-energy landscape that alternates between two states, even if both states are spatially symmetric. If the two states differ only by a discrete translation, the direction of the ratchet-driven current can be reversed by changing their relative durations. We experimentally demonstrate flux reversal in a symmetric two-state ratchet by tracking the motions of colloidal spheres moving through large arrays of discrete potential-energy wells created with dynamic holographic optical tweezers. The model's simplicity and high degree of symmetry suggest possible applications in molecular-scale motors.

    Original languageEnglish (US)
    Article number060102
    JournalPhysical Review E
    Volume71
    Issue number6
    DOIs
    StatePublished - Jun 2005

    Fingerprint

    Ratchet
    Reversal
    Hot Temperature
    potential energy
    Optical Tweezers
    Energy Landscape
    Motion
    Periodic Potential
    Alternate
    Simplicity
    Symmetry
    symmetry
    Energy
    Demonstrate
    Model
    Direction compound

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Condensed Matter Physics
    • Statistical and Nonlinear Physics
    • Mathematical Physics
    • Medicine(all)

    Cite this

    Flux reversal in a two-state symmetric optical thermal ratchet. / Lee, Sang Hyuk; Grier, David G.

    In: Physical Review E, Vol. 71, No. 6, 060102, 06.2005.

    Research output: Contribution to journalArticle

    Lee, Sang Hyuk ; Grier, David G. / Flux reversal in a two-state symmetric optical thermal ratchet. In: Physical Review E. 2005 ; Vol. 71, No. 6.
    @article{6181dfe21c694360a25557ca9a2fa7d7,
    title = "Flux reversal in a two-state symmetric optical thermal ratchet",
    abstract = "A Brownian particle's random motions can be rectified by a periodic potential-energy landscape that alternates between two states, even if both states are spatially symmetric. If the two states differ only by a discrete translation, the direction of the ratchet-driven current can be reversed by changing their relative durations. We experimentally demonstrate flux reversal in a symmetric two-state ratchet by tracking the motions of colloidal spheres moving through large arrays of discrete potential-energy wells created with dynamic holographic optical tweezers. The model's simplicity and high degree of symmetry suggest possible applications in molecular-scale motors.",
    author = "Lee, {Sang Hyuk} and Grier, {David G.}",
    year = "2005",
    month = "6",
    doi = "10.1103/PhysRevE.71.060102",
    language = "English (US)",
    volume = "71",
    journal = "Physical Review E - Statistical, Nonlinear, and Soft Matter Physics",
    issn = "1539-3755",
    publisher = "American Physical Society",
    number = "6",

    }

    TY - JOUR

    T1 - Flux reversal in a two-state symmetric optical thermal ratchet

    AU - Lee, Sang Hyuk

    AU - Grier, David G.

    PY - 2005/6

    Y1 - 2005/6

    N2 - A Brownian particle's random motions can be rectified by a periodic potential-energy landscape that alternates between two states, even if both states are spatially symmetric. If the two states differ only by a discrete translation, the direction of the ratchet-driven current can be reversed by changing their relative durations. We experimentally demonstrate flux reversal in a symmetric two-state ratchet by tracking the motions of colloidal spheres moving through large arrays of discrete potential-energy wells created with dynamic holographic optical tweezers. The model's simplicity and high degree of symmetry suggest possible applications in molecular-scale motors.

    AB - A Brownian particle's random motions can be rectified by a periodic potential-energy landscape that alternates between two states, even if both states are spatially symmetric. If the two states differ only by a discrete translation, the direction of the ratchet-driven current can be reversed by changing their relative durations. We experimentally demonstrate flux reversal in a symmetric two-state ratchet by tracking the motions of colloidal spheres moving through large arrays of discrete potential-energy wells created with dynamic holographic optical tweezers. The model's simplicity and high degree of symmetry suggest possible applications in molecular-scale motors.

    UR - http://www.scopus.com/inward/record.url?scp=27944489506&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=27944489506&partnerID=8YFLogxK

    U2 - 10.1103/PhysRevE.71.060102

    DO - 10.1103/PhysRevE.71.060102

    M3 - Article

    VL - 71

    JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

    JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

    SN - 1539-3755

    IS - 6

    M1 - 060102

    ER -