Spatiotemporal Coherent Control In Complex Media

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Post-doctoral position

Contact : Dr. Sylvain Gigan

Postdoctoral position - Ultrasound Super-Localization

Job Description The Institut Langevin recently discovered a method to localize microbubbles far beyond the diffraction-limit of ultrasound. Early experiments have shown that distinct punctual events can be observed when microbubbles are imaged with ultrafast imaging (10 000 Hz frame rate). These events can be localized within a few microns, even if the wavelength is closer to 1 mm. Such a technique could make ultrasound microscopy possible deep within tissue. The successful candidate will work at Institut Langevin on in-vitro setup, consisting in a programmable ultrasound scanner and microfluidic systems, but will also describe the theoretical limits of this new imaging method. Finally, the candidate will attempt applying the technique in-vivo. Guaranteed funding for 12 months, renewable for another year. Starting date : ASAP

Job Requirements A PhD in biomedical engineering or physics completed within the last 5 years. Experience in experimental acoustics or optics needed. Excellent programming skills in Matlab. Fluency in French a plus, but not a requirement.

Please include the names of two people, including your thesis advisor, who will provide letters of recommendation, and email a copy of CV to Olivier Couture at

Description of Institut Langevin : Institut Langevin is located in the centre of Paris, at ESPCI. It employs a total of 100 permanent researcher, professors, postdoc and PhD students under the direction of Mathias Fink. The Institut Langevin made many contributions in the field of wave physics and particularly for medical ultrasound, under the supervision of Mickael Tanter (team "Wave Physics in Medicine", Inserm U979, 30 people). For instance, our team first proposed an original solution to the problem of ultrasonic focusing through the human skull bone using the concept of wave time reversal. Another research topic of our team consists in the development of a new ultrasound based technique for the real time imaging of viscoelastic properties of soft tissues, in particular in the case of breast cancer or liver fibrosis diagnoses. A first start-up company, Echosens (www.echosens.com, 45 employees, 800 systems installed worldwide) incubated in our lab, is today commercializing a probe, called Fibroscan. For breast cancer diagnosis, we proposed an original solution based on an ultrafast echographic imaging device (able to reach frame rates greater than 5000 frames.s-1). A second start-up company, Supersonic Imagine (www.supersonicimagine.fr, 100 employees, 72 MEuros invested) was created in may 2005 to develop and commercialize this new system. Finally, our team "Wave Physics in Medicine" (Inserm U979) develops the concept of “all ultrasound” systems able to achieve on target organs such that liver or kidney both, ultrasound therapy and the monitoring of tumor response to treatment.

Smart optical coherence tomography using the time-dependent backscattering matrix

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Contact : Alexandre Aubry (), Geoffroy Lerosey, Claude Boccara, Mathias Fink

Transfert radiatif des ondes ultrasonores en milieu hétérogène/Radiative transfer of ultrasonic waves in heterogeneous media

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Annonce en français

Annoucement in English

Contact : Arnaud Derode (), Romain Pierrat ()