The primary thrust of the Physical Ultrasonics Research Group is the physics of ultrasonically mediated phenomena which includes the fabrication and characterization of phononic metamaterials, study of micellar fluid phase transitions, signal propagation in heterogeneous, dispersive and viscoelastic media, development of tissue-mimicking phantoms and the physics of acoustic cavitation.
Dr. Joel Mobley was elected a 2019 Fellow of the Acoustical Society of America for contributions to the ultrasonic characterization of dispersive systems.
Fellowship in the Acoustical Society of America is an honor. An ASA fellow is deemed to be in the top 10% of the membership of the Technical Committee in his or her chosen area of interest.
Election to fellowship depends on several factors. These include technical contributions to acoustics as evidenced by publications and presentations, patents, projects, service to the Society, participation in Society activities, contributions to the teaching or dissemination of knowledge of acoustics, leadership activities in other acoustical societies and Standards activities.
Dr. Joel Mobley is Professor of Physics and Astronomy at the University of Mississippi and Senior Scientist at the National Center for Physical Acoustics at the University of Mississippu.
A paper titled "Broadband wave packet dynamics of minimally diffractive ultrasonic fields from axicon and stepped fraxicon lenses" has been accepted for publication in the Journal of the Acoustical Society of America in June 2019. The paper is authored by Robert Lirette and Joel Mobley. https://doi.org/10.1121/1.5116011
Bobby Lirette has successfully defended his PhD dissertation. His work involved the design of fraxicon and Fresnel lenses to manipulate ultrasound beams to increasing their focal power efficiency and use them to extract droplets between fluid-fluid interfaces.