Comparison between time reversal and spatio‐temporal inverse filter application to focusing through a human skull

2001 ◽  
Vol 109 (5) ◽  
pp. 2397-2397
Author(s):  
Mickael Tanter ◽  
Jean‐Francois Aubry ◽  
Jean‐Louis Thomas ◽  
Mathias Fink
Keyword(s):  
Time Reversal ◽  
Inverse Filter ◽  
Human Skull ◽  
Spatio Temporal

scholarly journals From Loschmidt daemons to time-reversed waves

2016 ◽  
Vol 374 (2069) ◽  
pp. 20150156 ◽  
Author(s):  
Mathias Fink
Keyword(s):  
Wave Propagation ◽  
Time Reversal ◽  
Degrees Of Freedom ◽  
Point Of View ◽  
Propagation Time ◽  
Reversal Invariance ◽  
Spatial Boundary ◽  
Dual Approaches ◽  
Spatio Temporal

Time-reversal invariance can be exploited in wave physics to control wave propagation in complex media. Because time and space play a similar role in wave propagation, time-reversed waves can be obtained by manipulating spatial boundaries or by manipulating time boundaries. The two dual approaches will be discussed in this paper. The first approach uses ‘time-reversal mirrors’ with a wave manipulation along a spatial boundary sampled by a finite number of antennas. Related to this method, the role of the spatio-temporal degrees of freedom of the wavefield will be emphasized. In a second approach, waves are manipulated from a time boundary and we show that ‘instantaneous time mirrors’, mimicking the Loschmidt point of view, simultaneously acting in the entire space at once can also radiate time-reversed waves.

Optimal focusing by spatio-temporal inverse filter. I. Basic principles

2001 ◽  
Vol 110 (1) ◽  
pp. 37-47 ◽  
Author(s):  
M. Tanter ◽  
J.-F. Aubry ◽  
J. Gerber ◽  
J.-L. Thomas ◽  
M. Fink
Keyword(s):  
Inverse Filter ◽  
Basic Principles ◽  
Spatio Temporal ◽  
Optimal Focusing

Time reversal focusing through a human skull optimized by skull surface detection algorithm

2002 ◽  
Vol 112 (5) ◽  
pp. 2433-2433
Author(s):  
Jean‐Francois Aubry ◽  
Didier Cassereau ◽  
Mathias Fink
Keyword(s):  
Time Reversal ◽  
Detection Algorithm ◽  
Human Skull ◽  
Surface Detection

Improved time reversal focusing in complex media with inverse filter.

2008 ◽  
Vol 124 (4) ◽  
pp. 2551-2551
Author(s):  
Thomas Callaghan ◽  
George Papanicolaou
Keyword(s):  
Time Reversal ◽  
Complex Media ◽  
Inverse Filter

Spatio-temporal invariants of the time reversal operator

2010 ◽  
Vol 127 (5) ◽  
pp. 2904-2912 ◽  
Author(s):  
Jean-Luc Robert ◽  
Mathias Fink
Keyword(s):  
Time Reversal ◽  
Spatio Temporal

The stokes relations linking time reversal and the inverse filter

2005 ◽  
Author(s):  
F. Vignon ◽  
A. Saez ◽  
J.F. Aubry ◽  
M. Tanter ◽  
M. Fink
Keyword(s):  
Time Reversal ◽  
Inverse Filter
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