Andreas Mandelis (; born 22 June 1952) FRSC, FCAE, FAPS, FSPIE, FAAAS, FASME, is a Greek - Canadian physicist who is a professor and researcher in the department of Mechanical and Industrial Engineering at the University of Toronto. He is the director of the Center for Advanced Diffusion-Wave and Photoacoustic Technologies (CADIPT). and of the Institute for Advanced Non-Destructive and Non-Invasive Diagnostic Technologies (IANDIT) at the University of Toronto. He is an internationally recognized expert in thermophotonics. and is considered a pioneer in the fields of diffusion-wave, photothermal, and photoacoustic sciences and related technologies. His research interests encompass studies of physical energy conversion processes in condensed and biological matter as they impact instrumentation science and signal generation technologies with applications spanning the development of a wide spectrum of novel instrumentation, measurement and imaging techniques using optical-to-thermal, thermoelastic, electronic, ultrasonic and/or photonic energy conversion high-dynamic-range and high-sensitivity analytical methodologies, leading to advanced non-destructive / non-invasive diagnostic, inspection and monitoring technologies with major focus on advanced dynamic imaging instrumentation for industrial and biomedical applications. He is the inventor of a photothermalimaging radar which can detect tooth decay at an early stage, can detect the onset of cancerous lesions in soft tissues, cracks in teeth and monitor dental structural integrity over time.
His research team also pioneered and patented 22 analytical instrumentation and measurement methodologies and metrologies.
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