Optical Trapping Using Microlens Arrays and Digital Micromirror Devices

Tufts University
posted on 01/07/2009

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Tufts University Categories:
diagnostic
instrumentation:analytical
optics
research tool:equipment

Additional Keywords:
(none specified)

Invention Summary

Methods and devices are provided for the trapping, including optical trapping; analysis; and selective manipulation of particles on an optical array. A device parcels a light source into many points of light transmitted through a microlens optical array and an Offner relay to an objective, where particles may be trapped. Preferably the individual points of light are individually controllable through a light controlling device. Optical properties of the particles may be determined by interrogation with light focused through the optical array. The particles may be manipulated by immobilizing or releasing specific particles, separating types of particles, etc. The invention provides a powerful tool for moving, trapping, assembling, positioning, examining, and sorting single particles and cells. Such capabilities have a broad range of potential applications in the fields of diagnostics, drug discovery, therapeutics, and basic research.