Andreas Mandelis

Andreas Mandelis, FRSC, FSPIE, FASME, (; born 22 June 1952) 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 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 His research team also pioneered and patented 22 analytical instrumentation and measurement methodologies and metrologies.

Career After graduating from Princeton, Mandelis worked as a researcher at Bell-Northern Research Labs in Ottawa from 1980 to 1981. He is also the director of the Institute for Advanced Non-Destructive and Non-Invasive Diagnostic Technologies (IANDIT) in the Faculty of Applied Science and Engineering at the University of Toronto. (2014–19) (Currently Editor-in-Chief Emeritus, ), Topical Editor of the OSA Journal Optics Letters (2012-18), and on the editorial board of the International Journal of Thermophysics on the scientific advisory board of the online journal Diffusion Fundamentals and on the Scientific Advisory Board of Quantitative InfraRed Thermography (QIRT) Journal (Lavoisier Press, France). He has also been a member in the editorial and advisory boards of the SPIE Journal of Biomedical Optics in the areas of photothermal imaging, dental optics, and photoacoustic tomography, Fellow of the Canadian Academy of Engineering, and a Fellow of the American Association for the Advancement of Science. and a Distinguished Fellow of the International Engineering and Technology Institute (IETI).

He is an expert in applied photonics, imaging, optoelectronics, materials science and biophotonics. He is considered a pioneer in the fields of diffusion-wave, photothermal and photoacoustic sciences and related technologies and his research is recognized as having helped define and develop these areas. He also pioneered the Thermal-Wave Resonant Cavity, which has applications in the fields of molecular thermophysics, kinetic theory and the infrared emissivity of fluids. Mandelis has created the field of dental photonic engineering and the optoelectronic technique of photocarrier radiometry. which has historically been severely limited in resolution by the physics of diffusive blurring.

Andreas Mandelis is a full professor at the Department of Mechanical and Industrial Engineering at the University of Toronto which he joined in 1981. The QDT device, named the "Canary System", uses laser pulses to detect tooth decay and is used as a non-invasive alternative to traditional methods including x-rays. Current focus of DWDT Academician: Fellow of the Canadian Academy of Engineering (2014). Fellow, American Physical Society (1993).

2004 New Pioneers Award in Science and Technology, Skills for Change, City of Toronto. Canada Research Chair (Tier 1) in Diffusion-Wave Sciences and Technologies (2008-2015-2022). 2009 Yeram S. Touloukian Award in Thermophysics, ASME. 2009 Senior Prize of the International Photoacoustic and Photothermal Association. 2009 Canadian Association of Physicists (CAP) Medal for Outstanding Achievement in Industrial and Applied Physics. 2010 Chair of the Board and President of the International Photoacoustic and Photothermal Association. Canada Council for the Arts Killam Research Fellowship. 2012 Canadian Association of Physicists (CAP)-INO Medal for Outstanding Achievement in Applied Photonics. Fellow, American Association for the Advancement of Science (AAAS) (2012). 2013 University of Toronto Inventor of the Year Award. Fellow, American Society for Mechanical Engineering (2013). 2014 Killam Prize Recipient of the Inaugural Canadian NDT Research Award (2017). Distinguished Fellow, International Engineering & Technology Institute (IETI) (2018). 5th International Engineering and Technology Institute (IETI) Annual Scientific Award Winner (2020). Fellowship, Constatiniana Academy of Arts and Sciences (Accademia Angelico Costantitiana di Lettere Arti e Scienze) (Italy). Founder and Co-director of biennial Mediterranean International School of Quantum Electronics, Progress in Photoacoustic & Photothermal Phenomena, Center Ettore Majorana in Erice (Sicily, Italy). Andreas Mandelis has been honored by the American Institute of Physics (AIP) Journal of Applied Physics with a Festschrift on the occasion of his 70th birthday (2022). ScholarGPS Highly Ranked Scholar status: "[Andreas Mandelis'] prolific publication record, the high impact of his work, and the outstanding quality of [his] scholarly contributions have placed [him] in the top 0.01% in Engineering and Computer Science and 0.03% in digital imaging." Recipient of VIII Pan-American Congress on Non-Destructive Testing Research Award, awarded every 4 years: "For outstanding and sustained excellence within NDT research and development that has contributed to innovation and/or breakthroughs that have benefited society and industry partners", June 11, 2025, Niagara Falls, ON, Canada. Advanced Materials Laureate 2025, International Association of Advanced Materials (IAAM), Ulrika, Sweden , "for many novel instrumentation and measurement methodologies in the advanced field of biothermophotonics which he pioneered". August 18, 2025, Stockholm, Sweden.

Selected publications List of selected publications:

Paper selected for inclusion in Virtual Journal of Biological Physics Research (www.vjbio.org), 8 (12) (Dec. 15, 2004).

S. Kaiplavil and A. Mandelis, "Truncated-correlation photothermal coherence tomography for deep subsurface analysis", Nature Photonics DOI: 10.10.1038/NPHOTON.2014.111 (1 – 8) (June 29, 2014). L. Hu, A. Mandelis, X. Lan, A. Melnikov, S. Hoogland, and E. H.Sargent, "Imbalanced Hole Mobility and Schottky Junction Induced Anomalous Current-Voltage Characteristics of Excitonic PbS Colloidal Quantum Dot Solar Cells", Solar Energy Materials Solar Cells 155, 155-165 (2016) P. Tavakolian, K. Sivagurunathan, and A. Mandelis, "Enhanced truncated-correlation photothermal coherence tomography with application to deep subsurface defect imaging and 3-dimensional reconstructions", J. Appl. Phys. 122, 023103 (2017); doi: 10.1063/1.4992807. P. Tavakolian, S. Roointan, A. Mandelis and W. Shi, « Non-Invasive In-Vivo 3-D Imaging of Small Animals Using Spatially Filtered Enhanced Truncated-Correlation Photothermal Coherence Tomography », (Nature) Scientific Reports 10, 13743 (10 pages) (2020). S. Roointan, P. Tavakolian, K. S. Sivagurunathan, M. Floryan, A. Mandelis, and S. H. Abrams, "3D Dental Subsurface Imaging Using Enhanced Truncated-Correlation Photothermal Coherence Tomography", (Nature) Scientific Reports 9, 16788 (12 pages) (2019). X. Guo, D. Zhang, K. Shojaei-Asanjan, K. Sivagurunathan, A. Melnikov, P. Song, and A. Mandelis « Noninvasive in-vivo glucose detection in human finger interstitial fluid using wavelength-modulated differential photothermal radiometry », J. Biophotonics 12 : e201800441), 1 – 8 (July 2019) / doi.org: 10.1002/jbio.201800441 D. Thapa, P. Tavakolian, G. Zhou, A. Zhang, A. Abdelgawad, E. Baradaran Shokouhi1, K. Sivagurunathan and A. Mandelis, « Three-dimensional thermophotonic super-resolution imaging by spatiotemporal diffusion reversal methods », Science Advances 9 (51), eadi1899 (9 pages) (22 Dec. 2023), DOI: 10.1126/sciadv.adi1899 D. Thapa, K. Sivagurunathan, A. Melnikov, and A. Mandelis, "Three-dimensional super-resolution crack imaging in industrial manufactured components: A truncated correlation photothermal coherence tomography approach", NDT&E Int. 146, 103145 (10 pages), May 2024;