Jacques Leng

Centre National de la Recherche Scientifique

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About

Jacques Leng is a leading figure in the physics of soft matter and acoustics, with a particular focus on the design and characterization of complex fluid-based metamaterials. His research masterfully bridges materials chemistry and wave physics, pioneering the use of highly controlled emulsions to manipulate ultrasound. In his seminal 2012 work, Leng demonstrated the first achievement of sharp acoustic multipolar resonances in highly monodisperse emulsions, a breakthrough that leveraged robotic production to precisely tune the effective acoustic properties of strongly scattering media. This foundational contribution, cited 35 times, opened new avenues for acoustic metamaterial design. Building on this, his 2014 study introduced a novel fluorinated magneto-responsive material—a ferrofluid emulsion embedded in a yield-stress hydrogel—that enables tunable ultrasound scattering properties. This work, garnering 21 citations, showcases his talent for creating multifunctional materials with potential applications in advanced ultrasound spectroscopy and imaging. Through these innovations, Leng has established himself as a key architect of programmable acoustic media, offering powerful tools for both fundamental wave physics and biomedical imaging technologies.