Colloquium: Dr Michael Haberman (University of Texas at Austin)

UK Metamaterials Network

Talk on 'Non-reciprocal acoustics: Concepts and application to acoustic diffusion' from Dr Michael Haberman (University of Texas at Austin)

The next speaker in our colloquia series is <a href="https://www.me.utexas.edu/people/faculty-directory/haberman" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Dr Michael Haberman</a>, Assistant Professor in the <a href="https://www.me.utexas.edu/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Walker Department of Mechanical Engineering</a> at University of Texas at Austin<a href="https://www.sheffield.ac.uk/aerospace/teaching-staff/simon-pope" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer"></a>, who will be giving a talk on &#x27;Non-reciprocal acoustics: Concepts and application to acoustic diffusion&#x27;.This event will be held on Friday 29th July, 12.30-13.30pm BST, via Zoom (link will be sent in registration email).The law of reciprocity in acoustics and elastodynamics codifies a relation of symmetry between action and reaction in fluids and solids. Dr Haberman will discuss spatiotemporal modulation of an AMS impedance to control and improve sound diffusion using a technique inspired by nonreciprocal vibrations in Euler beams. A theoretical model is developed using the classical grating equation augmented with a surface impedance that is modulated as a travelling wave function. Properly selected modulation parameters lead to significant increases in diffusion performance, which is verified using finite element methods as demonstrated by the angular dependence of the scattered field magnitude.Dr. Haberman is an Assistant Professor in the Walker Department of Mechanical Engineering at the University of Texas (UT) at Austin with a joint appointment at the <a href="http://www.arlut.utexas.edu/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Applied Research Laboratories UT Austin</a>. He received his Ph.D. and Master of Science degrees in Mechanical Engineering from the Georgia Institute of Technology in 2007 and 2001, respectively, and received a Diplôme de Doctorat in Engineering Mechanics from the Université de Lorraine in Metz, France in 2006. His undergraduate work in Mechanical Engineering was done at the University of Idaho, where he received a B.S. in 2000. Dr. Haberman&#x27;s research interests are centered on elastic and acoustic wave propagation in complex media, acoustic metamaterials, new acoustic transduction materials, ultrasonic nondestructive testing, and vibro-acoustic transducers. He has worked extensively on the modeling and characterization of composite materials and the multi-objective design of acoustical materials. His current research focuses on modeling, design, and testing of composite materials, metamaterials, and structures. His research finds application in technical areas that include the absorption and isolation of acoustical, vibrational, and impulsive energy using negative stiffness, acoustic cloaking, and devices that make use of non-reciprocal acoustic and elastic wave phenomena. His work has been featured in Physics Today, Scientific American, NBC News, and National Public Radio.

Colloquium: Dr Michael Haberman (University of Texas at Austin)

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Colloquium: Dr Michael Haberman (University of Texas at Austin)

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