From Time-Reversal Mirrors to Matrix Imaging

  • Speaker
  • Mathias Fink, Ph.D.Professor, ESPCI Paris
Date & Time


Location

Gerald D. Fischbach Auditorium
160 5th Ave
New York, NY 10010 United States

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5:30 p.m. Doors open

6:00 p.m. – 7:00 p.m. Lecture and Q&A

All participants must register in advance to attend this in-person lecture.

About Simons Foundation Presidential Lectures

Simons Foundation Presidential Lectures are free public colloquia centered on four main themes: Biology, Physics, Mathematics and Computer Science, and Neuroscience and Autism Science. These curated, high-level scientific talks feature leading scientists and mathematicians and are intended to foster discourse and drive discovery among the broader NYC-area research community. We invite anyone interested in the topic to join us for this weekly lecture series.

Can we make a wave revive its past life? The development of ‘time-reversal mirrors’ for different types of waves — ultrasound, microwave and visible light — has made it possible to exploit time reversibility. Such devices bounce waves back and forth with a target like a game of tennis, with the waves becoming more focused over time. These instruments offer original solutions for imaging complex disordered environments.

In this lecture, Mathias Fink will show how medical imaging of complex tissues with light or ultrasound in reflection mode can be revisited based on the concept of time-reversal processors. He will show that, with a multi-illumination strategy, recording a reflection matrix from this media provides enough information to compensate for any distortion effects in the tissues. This is the domain of ‘matrix imaging’ developed for ultrasound imaging and deep optical coherent tomography (OCT).

To attend this in-person event, you will need to:

Register in advance
• Provide valid photo ID upon entering the building
• Present your digital or printed Eventbrite ticket confirmation; make sure it is for the correct event and that the name on it matches your ID
• Wear a mask while in the auditorium and restrooms

Please note that by entering the Simons Foundation, you are attesting that you are not experiencing COVID symptoms and are not knowingly positive for COVID

About the Speaker

Fink’s area of research concerns the propagation of waves in complex media and the development of numerous instruments. His current research interests include medical imaging, wireless communications, wave control in complex media and metamaterials. His research has resulted in seven start-up companies totally over 500 employees. He is the founder of the Langevin Institute and a member of the French Academy of Science and the National Academy of Technologies of France.

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