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ESPCI Paris - PSL
ESPCI Paris - PSL is a major institution of higher education (a French "Grande École d’ingénieurs"), an internationally renowned research center, and a fertile ground of innovation for industry. Founded by the City of Paris in 1882, for over a century the School has attracted leading scientific innovators like Nobel Prize laureates Pierre and Marie Curie, Paul Langevin, Frédéric Joliot-Curie, Pierre-Gilles de Gennes, and Georges Charpak, who continue to contribute to the institution’s international reputation. The School’s culture of excellence remains as vibrant as ever. Fully 60% of (...)
Educational programs
Welcome to PSL University! By joining ESPCI paris- PSL, you also join PSL university and its 17 000 students. You get access to an exceptionnel education in sciences, arts, litterature and culture. From Bachelor to PhD, academic programs cover all the fields from sciences, human and social sciences, engineering and arts. PSL targets high-potential students, from every horizon, an accompagnies them towards excellence. Your education will be operated by ESPCI paris - PSL, and your degree delivered by PSL University. Discover the education programs of PSL University Ingénieur ESPCI Paris - (...)
Research
ESPCI Paris - PSL is home to 10 research laboratories (all of them being endorsed and jointly sponsored by CNRS) operating at the frontiers of scientific knowledge and experimental know-how, extending from fundamental research to innovation, and covering areas ranging from polymers to telecommunications, from nanobiophysics to organic synthesis, from environmental science to biomedical imaging, from neurobiology to microfluidics, from soft matter to quantum physics, and from colloids to prototyping for industry. ESPCI researchers publish around 500 scientific articles in leading (...)
Innovation
- Entrepreneurship and business start-ups
- Inventions
ESPCI: generating innovation and jobs ESPCI is also known for its capacity to encourage major innovations. Did you know that as well as radium, polonium, actinium and lutecium, many other objects from our everyday lives were first discovered or created at ESPCI, like the neon tube, the black box, the quartz watch, sonar, wireless technology, self-healing rubber or even ultrafast ultrasound imaging? An entrepreneurial culture More and more graduates create their own companies after graduation or after their PhD. This capacity to innovation is highly valued today. ESPCI courses (...)
International
- An international experience
- How to come to ESPCI Paris
The International Relations of ESPCI Paris - PSL aim to support the School’s policy and propose key strategies in response to the specificities of the school. In line with its identity, ESPCI Paris attaches great importance to collaborating with international institutions that capitalize on interdisciplinary research, innovation, basic and applied sciences. This central thread stimulates both didactic and scientific partnerships. ESPCI is a component school of PSL University. The objective of the international relations is to enable ESPCI Paris to develop the mobility of (...)
Support Us
ESPCI Paris is at the center of a large network of partnering agreements. These are three-way institutional partnerships - notably with the City of Paris, and ParisTech -, as well as academic, scientific and industrial partnerships enriched by the School’s energy, expertise and creativity. The commitment to transdisciplinarity extends beyond the School’s Paris campus. Today’s complex scientific and technological issues often demand a broader view and collaboration, with the deployment of complementary, hybrid approaches and the sharing of best practices in order to pool resources and (...)

A new approach of time reversal

15/07/2016

Can a wave be living its past life again? This issue has been widely tackled at ESPCI Paris, especially for acoustic and electromagnetic waves. The process called ‘time reversal mirror’ implies a lot of sensors and heavy electronics. Yet, teams from the Langevin Institute (ESPCI Paris/CNRS) and the PMMH Laboratory (ESPCI Paris/CNRS/UPMC/Université Paris Diderot) have just genuinely revisited this phenomenon by using space and time symmetries while avoiding any electronics.
The concept -named ‘Instantaneous time mirror’- has been tested with water waves, and the associated works have been published online in Nature Physics on 11th July 2016.

Video:

More information:
article in Physics Today

Publication:

V. Bacot et al., Time reversal and holography with spacetime transformations, Nat. Phys., 2016, doi: 10.1038/nphys3810

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A new approach of time reversal

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