Axis leader : Nikolay CHIGAREV (IR)

Axis members :

  • James BLONDEAU (AI)
  • Nikolay CHIGAREV (IR)
  • Romain HODE (PhD student)
  • Artem HUSIEV (PhD student)
  • Vitalyi GUSEV (PR)
  • Samuel RAETZ (MCF)
  • Théo THREARD (PhD student)
  • Vincent TOURNAT (DR CNRS)


Former PhD students and Post-doctoral researchers :

  • Jacek ZAKRZEWSKI (post-doc 2007-2008),
  • Sylvain MEZIL (PhD student 2009-2012),
  • Chenyin NI (post-doc 2011-2012 and 2012-2013),
  • Sergey NIKITIN (PhD student 2012-2015),
  • Frédéric FAESE (post-doc 2014-2015)
  • Damien GASTEAU (PhD student 2013-2016)
  • Maju KURIAKOSE (post-doc 2015-2017)
  • Guqi YAN (PhD student, 2015-2018)
  • Elton DE LIMA SAVI (post doc, 2018-2019)
  • Haiyang LI (post-doc, 2018-2019)

Current projects :

  • UP-DOWN, “Ultrafast Photostriction in Ferroelectric Domains, Walls and Nanostructures” (ANR, 2018-now)
  • I2T2M, “3D Opto-Acusto-Optical imaging of the transformation of materials on the nanometric scale, (ANR, 2019-now)
  • Contract with CEA, (2011-now)
  • Contract with SAFRAN, (2017-now)
  • FERRO (Grant Pari Scientifique, funded by LMAc, 2015-now)
  • NANOSHEAR (Grant Pari Scientifique, funded by LMAc, 2018-2021)
  • HUB ACOUSTIC (regional project, 2015-now)

Completed projects :

  • ANL-MEMS, “Non destructive characterization of defects in MEMS using nonlinear acoustic methods”, (ANR, 2011-2014)
  • LUDACISM, “Laser Ultrasonics in a Diamond Anvil Cell for Investigation of Simple Molecular Compounds at Ultrahigh Pressures”, (ANR, 2012-2015)
  • LUCITA, (IRT, 2013-2016).

The research in opto-acoustics has the goal to introduce innovative methods of acoustic wave generation and detection by lasers for the acoustic evaluation and control of materials and structures. Here the role played by piezoelectric transducer in traditional ultrasonic measurements is attributed to a laser, but the latter can play this role from a distance and without any contact with the materials. If necessary the sound excitation and detection can be very local (down to micron scale of laser focus) or, in contrast, can rapidly optically scan large surface areas (up to few meters). Optoacoustics in addition to other frequency ranges accessible by traditional methods provides access to hypersonic frequencies of acoustic waves (above 1 GHz). In particular the acoustic waves with frequencies exceeding 10 GHz have the wavelengths shorter than a micrometer in solids. This makes the laser-generated and laser-detected hypersound a unique tool for the non-destructive evaluation of the microcrystalline materials and microstructures.