This Mirror Reverses How Light Travels in Time

This Mirror Reverses How Light Travels in Time

3/26/2023

link

https://spectrum.ieee.org/time-reversal-interface

summary

This article discusses the concept of time reversal interfaces and their potential applications in various fields. Time reversal interface technology involves capturing and re-emitting signals in a way that allows them to travel back in time and converging at the exact location and time they were initially transmitted. The article explains the underlying principles of time reversal, including wave equations, multiple transducers, and time reversal mirrors. It explores how this technology can be used for applications such as medical imaging, underwater communication, and wireless power transfer. The article also discusses the challenges and limitations of time reversal interfaces, including signal distortion and energy requirements. Overall, time reversal interfaces hold great promise for revolutionizing various aspects of technology and communication.

tags

energy harvest ꞏ time-domain analysis ꞏ wave interference ꞏ signal enhancement ꞏ wave transmission ꞏ wave focusing ꞏ wave-based communication ꞏ phase conjugation ꞏ acoustic waves ꞏ wave propagation ꞏ metamaterials ꞏ acoustic engineering ꞏ wave physics ꞏ wavefront correction ꞏ time reversal ꞏ signal processing ꞏ temporal symmetry ꞏ wave imaging ꞏ wave-based devices ꞏ waveguide ꞏ wave sensing ꞏ wave manipulation ꞏ wave scattering ꞏ wave control ꞏ temporal focusing ꞏ wave-based systems ꞏ information processing ꞏ wave-based applications ꞏ wavefront reconstruction ꞏ wave reflection ꞏ time-domain signal ꞏ wave dispersion ꞏ wavefront shaping ꞏ wave velocity ꞏ physics ꞏ time-reversal symmetry ꞏ communication technology ꞏ wave-based imaging ꞏ time-domain processing ꞏ wave inversion ꞏ wavefront engineering ꞏ temporal manipulation ꞏ time-reversal technique ꞏ wave absorption ꞏ temporal resolution ꞏ wave attenuation ꞏ temporal anomaly ꞏ materials science ꞏ wave-based technology ꞏ time-reversal mirror ꞏ temporal modulation