Dielectrophoretic Raman Scattering Biosensor

Period of Performance: 06/28/2006 - 10/30/2008


Phase 2 SBIR

Recipient Firm

Physical Optics Corp.
1845 West 205th Street Array
Torrance, CA 90501
Principal Investigator


To address the Army s need for a diagnostic system capable of simultaneously detecting and identifying up to 100 militarily relevant pathogens/targets from human blood or serum samples, Physical Optics Corporation (POC) proposes to complete the development of a new Dielectrophoretic Raman Scattering Biosensor (DIRASBI) system. This system will be capable of label-free and reagent-free detection of pathogens through a unique combination of dielectrophoresis and surface-enhanced Raman spectroscopy in an integrated detection chip. DIRASBI is capable of simultaneously detecting up to 100 pathogens from a single blood/serum sample and can easily incorporate new pathogens. In Phase I, POC demonstrated the feasibility of DIRASBI by immobilizing multiple surrogate pathogens without the use of any analyte-specific reagents and identifying them without the use of any labels such as flurophores or chemophores. In Phase II, POC plans to develop a fully automated sample analysis system that detects the presence of multiple targeted pathogens in blood/serum samples in real time. This prototype will be lightweight, compact (