Development of a Portable Aerosol Collector

Period of Performance: 05/12/2000 - 11/12/2000

$70K

Phase 1 SBIR

Recipient Firm

Mesosystems Technology, Inc.
415 N. Quay, Bldg A, Suite 3
Kennewick, WA 99336
Principal Investigator

Abstract

MesoSystems Technology, Inc. proposes to design, build, and test a novel miniature electrical aerosol collector to capture particulate on miniature structures. The novel miniature electrical aerosol collector will sample large volumes of air to concentrate the biological entities onto an aerogel-coated microstructure surface using electrical and inertial forces. After the soldier's mission, the collection fluid is added either to:·dissolve the aerogel and provide a biological sample or ·change the properties of the aerogel coating on the microstructure to release the biological material for detection. The coin-sized device draws air from a soldiers' surrounding environment with a battery-powered minimal power-consuming fan. The impaction efficiency of greater than 90% for particles onto the aerogel-coated microstructures was predicted by computational fluid dynamic (CFD) modeling. While the impaction collection efficiency is expected to be large, the inclusion of electrical collection mechanisms allows for even higher capture efficiencies. These aerosols are charged (without lysing the cells or other biological entities) by an upstream innovative electrode design that simulates high frequency fields using a simple battery-powered low voltage approach. The microstructure approach to collection fabricated with microinjection manufacturing techniques allows a disposable device to be made with an exceptionally high collection efficiency. Rapid collection of aerosols of biological orogin from air for sample identification.