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Dr Bernard Shieh

Post - Doctoral Researcher

Academic Background Bernard Shieh

Bernard received his M.S. in 2015 and his Ph.D. in 2017 from the Georgia Institute of Technology (Atlanta, GA), both in Mechanical Engineering. Under the advisement of Karim Sabra and Levent Degertekin, his work focused on the modelling and application of Micromachined Ultrasonic Transducer (MUT) arrays. In his doctoral work, he investigated the problem of fluid-structure interaction in MUTs, implementing a Fast Multipole Algorithm to successfully accelerate the simulation of arrays composed of thousands of membranes. The fluid-structure problem is highly relevant to the design of MUT arrays for applications in ultrasonic imaging, sensing, and therapeutics, as well as to the study of MUT-based acoustic metamaterials.

In 2017, Bernard served as a Post-Doctoral Fellow at Georgia Tech, working with Levent Degertekin and Biosense Webster on foldable array concepts for intracardiac echocardiography, and with Levent Degertekin and Gil Weinberg on the application of machine learning to ultrasonic myography for finger-tracking, gesture recognition, and prosthesis control.

He joined the BUBBL group in 2018 as a Post-Doctoral Researcher where his research is focused on array development for targeted drug delivery.

Publications

  • B. Shieh, K. G. Sabra, and F. L. Degertekin, Efficient broadband simulation of fluid-structure coupling for membrane-type acoustic transducer arrays using the multilevel fast multipole algorithm, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (2016), https://doi.org/10.1109/TUFFC.2016.2591920
  • B. Shieh, K. G. Sabra, and F. L. Degertekin, A hybrid boundary element model for simulation and optimization of large piezoelectric micromachined ultrasonic transducer arrays, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (2018), https://doi.org/10.1109/TUFFC.2017.2772331
  • B. Shieh, K. G. Sabra, and F. L. Degertekin, Simulation of absolute backscattering coefficient in Field II, Proceedings of the IEEE International Ultrasonics Symposium (2014), https://doi.org/10.1109/ULTSYM.2014.0604
Presentations
  • B. Shieh, K. G. Sabra, and F. L. Degertekin, Imaging performance analysis of a foldable large aperture 2-D ICE array, 2017 IEEE International Ultrasonics Symposium–Washington, D.C.
  • B. Shieh, K. G. Sabra, and F. L. Degertekin, A hybrid boundary element model for the simulation of acoustic cross-talk in large PMUT arrays in immersion, 2017 IEEE Joint ISAF-IWATMD-PFM Conference–Atlanta, GA
  • B. Shieh, K. G. Sabra, and F. L. Degertekin, Acoustic simulation of large CMUT arrays using a fast multipole algorithm, 2016 IEEE International Ultrasonics Symposium–Tours, France
  • B. Shieh, K. G. Sabra, and F. L. Degertekin, Efficient broadband simulation of fluid-structure coupling for large membrane-type MUT arrays, 2016 International Workshop on Micromachined Ultrasonic Transducers–Rome, Italy

Contact

Email:

Phone: +44 (0)7737 358 589

Mailing address:

Institute of Biomedical Engineering

Old Campus Road Research Building

University of Oxford

Oxford, OX3 7DQ, UK