Kinetically Locked-In Colloidal Transport in an Array of Optical Tweezers

Pamela T. Korda; Michael B. Taylor; David G. Grier

doi:10.1103/PhysRevLett.89.128301

Kinetically Locked-In Colloidal Transport in an Array of Optical Tweezers

Pamela T. Korda, Michael B. Taylor, David G. Grier

Research output: Contribution to journal › Article › peer-review

Abstract

We describe measurements of colloidal transport through arrays of micrometer-scale potential wells created with holographic optical tweezers. Varying the orientation of the trap array relative to the external driving force results in a hierarchy of lock-in transitions analogous to symmetry-selecting processes in a wide variety of systems. Focusing on colloid as a model system provides the first opportunity to observe the microscopic mechanisms of kinetic lock-in transitions and reveals a new class of statistically locked-in states. This particular realization also has immediate applications for continuously fractionating particles, biological cells, and macromolecules.

Original language	English (US)
Journal	Physical Review Letters
Volume	89
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.89.128301
State	Published - 2002

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.89.128301

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abstract = "We describe measurements of colloidal transport through arrays of micrometer-scale potential wells created with holographic optical tweezers. Varying the orientation of the trap array relative to the external driving force results in a hierarchy of lock-in transitions analogous to symmetry-selecting processes in a wide variety of systems. Focusing on colloid as a model system provides the first opportunity to observe the microscopic mechanisms of kinetic lock-in transitions and reveals a new class of statistically locked-in states. This particular realization also has immediate applications for continuously fractionating particles, biological cells, and macromolecules.",

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AB - We describe measurements of colloidal transport through arrays of micrometer-scale potential wells created with holographic optical tweezers. Varying the orientation of the trap array relative to the external driving force results in a hierarchy of lock-in transitions analogous to symmetry-selecting processes in a wide variety of systems. Focusing on colloid as a model system provides the first opportunity to observe the microscopic mechanisms of kinetic lock-in transitions and reveals a new class of statistically locked-in states. This particular realization also has immediate applications for continuously fractionating particles, biological cells, and macromolecules.

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Kinetically Locked-In Colloidal Transport in an Array of Optical Tweezers

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