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Todd W. Murray received a B.S. in Biomedical Engineering in 1992 from Johns Hopkins University (JHU). He remained at Johns Hopkins and received M.S. and Ph.D. degrees in Materials Science and Engineering in 1995 and 1998, respectively. His PhD research was per-
formed at the JHU Center for Nondestructive Evaluation and focused on laser array generation of ultrasound, laser generation of ultrasound in the ablative regime, and optimizing laser sources for high sensitivity laser ultrasonic systems. He then spent 1998- 2001 at Northwestern University in the Department of Mechanical Engineering, first as a Postdoctoral Research Fellow and later as a Research Assistant Professor. He worked to develop optical array interferometry systems based on two-wave mixing in photorefractive crystals and performed theoretical and experi- mental studies of ultrasonic wave propagation in thin films. Since 2001, Dr. Murray has been an Assistant Professor of Aerospace and Mechanical Engineering at Boston University. His current research interests include biomedical imaging, photothermal and photoacoustic microscopy, micro- and nanoscale materials char- acterization, and elastic wave propagation
Ronald A. Roy received a B.S. in Physics and Electrical Engineering from the University of Maine, an M.S. in Physics from the University of Mississippi, and a Ph.D. degree in Mechanical Engineering from Yale University. He currently serves as Professor of Aerospace and Mechanical Engineering at Boston University (BU). En route to BU, he
served as a Senior Physicist at the Applied Physics Laboratory and an Associate Research Professor of Bioengineering, both at the University of Washington. Prior to that, he served on the research staff at the National Center for Physical Acoustics. He specializes in the application of physical acoustics principles to problems in biomedical acoustics, industrial ultrasonics, acousto-optics, and under- water acoustics—however, his true passion is the acoustics of bubbles and bubbly media. Sonoluminescence, acoustic cav- itation dynamics, bubble-related ocean acoustics, bubble- mediated therapeutic ultrasonics are topics of past and cur- rent interest.
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24 Acoustics Today, July 2007