Professor Ronald A. Roy

Professor of Mechanical Engineering

Ronald Roy is the Chair of Mechanical Engineering and Head of the Department of Engineering Science. He formerly served as Professor and Chairman of the Dept. of Mechanical Engineering at Boston Univ., as a Senior Physicist at the Applied Physics Lab and an Associate Research Professor of Bioengineering, both at the Univ. of Washington, and on the research staff at the National Center for Physical Acoustics.  Professor Roy also served as the 65th George Eastman Distinguished Visiting Professor at the University of Oxford (2006-2007) and is a former Vice President of the Acoustical Society of America.


Ron has taught a broad range of foundational courses in mechanical engineering and acoustics at multiple universities in the US.  In Oxford, he teaches the 1st-year university course on electricity and magnetism, the 3rd-year course on heat transfer with phase change and multi-phase flow, and previously taught the 4th-year course on biomedical ultrasound.


Trained as a physicist and an engineer, Ron specializes in the application of physical acoustics principles to problems in biomedical acoustics, industrial ultrasonics, and acoustical oceanography — however, his true passion is the acoustics of bubbles and bubbly media.  Sonoluminescence (light from sound), acoustic cavitation dynamics, shock-driven cavity collapse physics, and bubble-mediated therapeutic ultrasonics are topics of past and current interest.  Most recently, he has joined colleagues in developing new techniques for imaging the optical properties of soft tissues through the nonlinear interaction of light and sound (acousto-optic imaging) and is currently exploring novel ways in which nanoparticles can be used in conjunction with laser illumination and high-intensity focused ultrasound to facilitate both optical imaging and focused ultrasound surgery.  In addition to academic and contract research, Ron has served in over 35 consultancies for corporations, companies, universities and US government agencies.

Selected publications*

Adams, M., Wang, Q., Cleveland, R.O., and Roy, R.A., “Thermal dose dependent optical property changes of ex vivo chicken breast tissues between 500 and 1100 nm,” Phys. Med. Biol. 59, 3249-3260 (2014).

Murray, T.W., Lai, P., and Roy, R.A., “Measuring tissue properties and monitoring therapeutic responses using acousto-optic imaging,” Annals of Biomedical Engineering 40(2), 474-485 (2011).

Lai, P., McLaughlan, J.R., Draudt, A.B., Murray, T.W., Cleveland, R.O. and Roy, R.A., “Real time monitoring of high intensity focused ultrasound lesion formation using acousto-optic sensing”, Ultrasound Med. & Biol. 37(2), 239-252 (2011).

Coussios, C.C. and Roy, R.A.,  “Applications of Acoustics and Cavitation to Non-invasive Therapy and Drug Delivery,” Annual Review of Fluid Mechanics 40, 395-420 (2008) (invited).

Coussios, C.C., Farny, C.H., ter Haar, G. and Roy, R.A., “Role of acoustic cavitation in the delivery and monitoring of cancer treatment by high-intensity focused ultrasound,” Int. J. Hyperthermia 23(2), 105–120, 2007 (invited article).

Holt, R.G. and Roy, R.A., “Measurements of bubble-enhanced heating from focused, MHz-frequency ultrasound in a tissue-mimicking material,” Ultrasound Med. Biol. 27, 1399-1412, 2001.

Matula, T.J., Roy, R.A., and Mourad, P.D., “Optical pulse width measurements of sonoluminescence in cavitation-bubble fields,” J. Acoust. Soc. Am. 101, 1994-2002, 1997.

Crum L.A. and Roy, R.A., “Sonoluminescence,” Science 226, 233-234, 1994 (invited article).

Gaitan, D.F., Crum, L.A., Church, C.C., and Roy, R.A., “Sonoluminescence and bubble dynamics for a single, stable, cavitation bubble,” J. Acoust. Soc. Am. 91(6), 3166-3183, 1992.

Roy, R.A., Madanshetty, S.I., and Apfel, R.E., “An acoustic backscattering technique for the detection of transient cavitation produced by microsecond long pulses of ultrasound,” J. Acoust. Soc. Am., 87(6), 2451-2458, 1990.

* From 169 articles in print and 459 papers presented at conferences and symposia.

Contact Details
Postal Address
Thom Building, Room 70.22A
Department of Engineering Science
Parks Road
United Kingdom