Sensors & Electronics
Physical Property Sensors
Infrared Signatures of Material Surfaces (305)
Problem: Need non-contact method to detect and identify key chemicals adsorbed on natural and manmade material surfaces
Project Activity Scope: Mechanisms
PNNL Solution:
- Record infrared reflectance spectra for selected substrate materials (with and without adsorbed chemicals)
- Data show correlation of absorption strength and chemical concentration
- Initial tests are being conducted to asses usefulness for adsorbed chemical mixtures
- Applying multi-variant methods for analysis of recorded spectra
Capabilities Employed to Meet Client Needs: Infrared spectral reflectance measurements using lab FTIR with reflectance attachments (diffuse and specular reflectance measurements); analyte and sample preparation and characterization; sample substrates include soils, dust, glass, metals, building materials, etc.; spectral analysis and modeling including comparisons with existing data bases; optical system assembly and use; multi-variant methods for data analysis.
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Contact: Tom Blake
