Photothermal Deflection Spectroscopy of Collected Aerosols

Simple IR Laser-ExcitedPhotothermal Deflection ApparatusPositionSensingDetectorCO 2 LaserExcitationLensHe-Ne ProbeLaserGe SubstrateAmmoniun Nitrate AerosolExcitation Fluence = 12 J m -2Malathion Aerosol PDSExcitation Fluence = 45 J m -20.51.20.41.0Signal (V)0.30.20.10.0-0.10.000 0.002 0.004 0.006 0.008 0.010Signal (V)0.80.60.40.20.0-0.20 0.002 0.004 0.006 0.008 0.01Time (s)Time (s)