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RESEARCH GROUP JEANETTE JONES, PI NICKOLAI KUKHTAREV, CO-PI FLORENCE OKAFOR, CO-PI

RESEARCH GROUP JEANETTE JONES, PI NICKOLAI KUKHTAREV, CO-PI FLORENCE OKAFOR, CO-PI TATIANA KUKHTAREVA CO-PI. Research Objectives.

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RESEARCH GROUP JEANETTE JONES, PI NICKOLAI KUKHTAREV, CO-PI FLORENCE OKAFOR, CO-PI

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  1. RESEARCH GROUP JEANETTE JONES, PI NICKOLAI KUKHTAREV, CO-PI FLORENCE OKAFOR, CO-PI TATIANA KUKHTAREVA CO-PI

  2. Research Objectives We suggest using a novel complex optical and electrical technique of moving light-induced electric-field gratings for the sensing and separation and removal of hazardous materials existing in liquid and vapor phase. This technique may be also used for processing of solid-state surfaces using spatially-modulated electric field and electrical discharges. Our research objectives based on phenomena that microorganisms as biophysical objects, may be identified and separated using electric charges that are naturally present or may be induced by photoexcitation.

  3. Research Objectives This technique can be divided in 3 methods: • 1)structured laser-induced patterns, • 2) structured electric-field patterns, • 3) electrical discharges. New technique of the holographic or “running” grating may be used not only for identification but also for separation of different species with different charged states. We simultaneously will test another approach based on the details of the motility patterns of microbiological objects (MO) as “signatures” of the species. For recording and processing of the MO velocities spectra we will use a modified method of transient holographic photocurrent developed originally for characterization of semiconductors

  4. Research Objectives The two methods: electrical and optical, will be tested to determine their suitability for a contactless methods of MO manipulation. The primary objectives to be addressed in this phase are: 1.What type of model MO (algae, fungi virus/bacteriophage, and bacteria) is best for detection by our biophysical methods? 2.How much sensitivity can be improved by optimization of laser intensity, wavelength and polarization? 3.What are the essential design issues for implementing a contactless method based on electrical and optical responses?

  5. APPROACH

  6. APPROACH

  7. APPROACH

  8. APPROACH

  9. TWEEZING by Light-Induced Pattern

  10. DECONTAMINATION BY MOVING INTERFERENCE PATTERN

  11. DECONTAMINATION BY MOVING INTERFERENCE PATTERN

  12. Decontamination by High-Voltage Pulses(Discharges)

  13. Decontamination by High-Voltage Pulses(Discharges) LiNbO3 crystal as a power source for E-O Modulator.

  14. Decontamination by High-Voltage Pulses(Discharges)

  15. TASKS • Development of a method of running optical interference pattern using rotating diffractive element or mirror displacement • Testing this method of running grating for manipulation of microbiological and chemical suspensions by optical tweezing • Testing the method of moving electric field grating for decontamination of water solution and aerosols. • Proof method of Pulsed High-Voltage Discharges • Report our results in International Conferences and publish papers in scientific journals

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