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Army

Systems and methods for individually trapping particles from air and measuring the optical spectra or other properties of individual trapped particles

  • US Patent No. 9222874
  • Issued: December 29, 2015
  • Status: Active
Photonics

Embodiments of the present invention are directed to systems and methods for continuously sampling particles from air. In one embodiment, a system for continuously sampling particles from air may include: an airflow system configured to continuously draw air including airborne particles into the system; a photophoretic trap that uses photophoretic forces of a laser beam to trap one or more of the airborne particles from the drawn air; a measurement device configured to measure one or more properties of the trapped one or more airborne particles; and a controller configured to repeatedly trap, measure and release one or more airborne particles.

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