Centre National De La Recherche Scientifique

Sorbonne Université

Université De Lille

Ecole Centrale De Lille

Olivier Khalil Nizar Bou Matar-Lacaze

Jean-Louis Pierre Thomas

Michaël Aymeric Cyril Baudoin

Antoine Jean-Pierre René Riaud

Electroacoustic device that includes a body, an electrode to be electrically powered, named hot electrode, and an electrode to be electrically grounded, named ground electrode. The body includes a piezoelectric part or the electroacoustic device further including a piezoelectric part different from the body. The hot electrode includes a hot track spiraling around a spiral axis. The radial step between two consecutive coils of the hot track decreasing radially from the spiral axis. The hot electrode and the ground electrode are arranged on the piezoelectric part such as to define a wave transducer configured to generate a focalised ultrasonic vortex propagating in the body and/or, when a fluid medium is acoustically coupled with the electroacoustic device, in the fluid medium.

Growing community of inventors

Valenciennes, France

Olivier Khalil Nizar Bou Matar-Lacaze