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Optical Diagnostics
The scientists at Michigan Aerospace Corporation have experience in both elastic and inelastic light
scattering for both remote sensing and in-situ measurements. These optical diagnostics techniques have macro-scale
applications such as aerodynamic testing in large-scale flow facilities and combustors to micro-scale devices, for
micro-fluidics, lab-on-a-chip analysis and applications where optical access is limited by the application’s
geometry.
These techniques include:
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Rayleigh scattering for flow velocity (Doppler shift), density and temperature measurements.
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Mie scattering for flow velocity measurements and particle sizing (PM 10 in particular).
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Laser-induced fluorescence (LIF) for combustion and radical species measurements, as well as detection of biomolecular species and water quality monitoring.
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Raman-based techniques, for basic species detection and for measuring species concentration and temperature.
Michigan Aerospace’s experience
in developing instrumentation for space applications lends itself to the fabrication of sensors specifically designed for
in-situ measurements in high temperature conditions and highly corrosive environments.
Laser-induced fluorescence and Raman-based techniques are known to have low quantum yield and small
scattering cross section. LIF and Raman light detection require expertise in low-light level filtering and detection
that is available at Michigan Aerospace Corporation.
Michigan Aerospace Corporation has also the capability to add an LIF-based module to measure airborne
biomolecular species concentration to its existing remote sensing LIDAR system. This LIDAR system can be complemented by
a network of unattended point-detectors for airborne particulate counting and sizing.
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