Multiple Excitations Multi-Spectral Fluorescence (MEMSF) Bio-Detector
Abstract
Titan Corporation (Titan) and Science & Engineering Associates, Inc. (SEA) are jointly developing a Multiple Excitations Multi-Spectral Fluorescence (MEMSF) bio-detector for potential use in tailored applications. Titan and SEA have an ongoing strategic relationship to design, develop and deploy the MEMSF technology. MEMSF technology promises to be a cost effective solution that provides a high probability of success, while pushing the envelope of spectral sensing of bio-aerosols. The major scientific innovation of MEMSF is measuring the fluorescence of aerosol samples at a sufficient number of excitation and emission wavelengths to recognize the identifying fluorescence features of Aerosol Biological Weapons Agents (ABWA) and common interfering aerosols. The key is to not only find the "needle in the haystack", but "remove the hay". In other words, MEMSF is a sensitive ABWA detector that also recognizes and rejects potential false alarms from interfering agents. The MEMSF bio-detector concept, illustrated in Figure 1, uses a virtual impactor technology to concentrate particles in the 0.5 10 m size range and reject clutter outside that range. This size-selected aerosol sample is deposited onto non-fluorescing filter media for MEMSF analysis and is also automatically preserved for further confirmatory and forensic analyses. The MEMSF detection process is based upon the intensities of multiple wavelength excitation/emission pairs (EEP) selected to characterize and identify bioaerosols.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2005
- Accession Number
- ADA449910
Entities
People
- Darren S. Mcknight
- David T. Kendrick
- Gregory C. Mooradian
- Patrick C. Mock
- William Felder
Organizations
- Titan Corp.