X

Events

Time-reversal mirrors and innovation by Mathias Fink, Langevin Institute / ESPCI

Event information

Start date :07/07/2015

End date :07/07/2015

Time :10:00

Location : Amphi. 2 - MRV, 118 route de Narbonne, 31400, Toulouse

Summary

Can we make a wave relive its past life? The development of true “time-reversal mirrors” for different types of waves: sound, ultrasonic, electromagnetic, light and even waves has made it possible to experimentally test the reversal of wave time in the most varied propagation environment and regimes. These mirrors allow a wave to be focused through any heterogeneous environments by reflecting it “backwards” to its original source.

These instruments not only shed new light on the problem of the irreversibility of time, they also provide original solutions to the problems of wave control in complex environments and imaging of these environments. They already have many applications: therapy, medical imaging, non-destructive testing, telecommunications, seismology, home automation, underwater acoustics, etc.

Biography

© Patrick Imbert / Collège de France

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Born in 1945 in Grenoble, Mathias Fink received the MS degree in mathematics from Paris University, and the PhD degree in solid state physics. Then he moved to medical imaging and received the Doctorat ès Sciences degree from Paris University in the area of ultrasonic focusing for real-time medical imaging. He was a professor at Strasbourg University, at Irvine University (USA) and at Paris University (Denis-Diderot). Mathias Fink is now a professor of physics at the École supérieure de physique et de chimie industrielles de la Ville de Paris (ESPCI) where he founded in 1990 the Laboratory Ondes et Acoustique.

He pioneered the development of time-reversal mirrors and he developed many applications of this concept from ultrasound therapy, medical imaging, non-destructive testing, underwater acoustics, seismic imaging, tactile objects, to electromagnetic telecommunications.

He also pioneered innovative medical imaging methods: transient elastography, supersonic shear imaging and multi-wave imaging that are now implemented by several companies. Four companies with more than 140 employees have been created from his research (Echosens, Sensitive Object, Supersonic Imagine and Time Reversal Communications).

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer

Enregistrer