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Sensors & Electronics

Biological Sensors

Tailoring PAS Design for Bacterial Detection (332)

Problem: Need to simplify sensor system for detection of bacteria to provide cost effective, field portable, robust sensor

Five discrete wavelenghts identified - graphic

Project Activity Scope (from Technical Overview Chart): Mechanisms through Intstruments

PNNL Solution:

  • Individual bacteria detection requires a limited number of measurement wavelengths
  • Advanced analysis of spectra for target and probable interferent bacteria allows selection of key measurement wavelengths
  • Allows simplified sensor system using fixed wavelength sources

Capabilities Employed to Meet Client Needs: Spectroscopic understanding of molecules and bacteria; use of electronics to collect data; data processing and analysis; understanding and operation of FT-infrared spectrometers for spectra characterization; microbiological techniques in cell culturing; statistical analysis of large, complex data sets, data analysis to obtain key chemical and biological information; reporting of findings (including numerous open literature publications).

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Contact: Nancy Foster-Mills

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