US 12,349,593 B2
Functionalized object with integrated mechanical wave sensor and associated production method
Lamine Benaissa, Grenoble (FR); Ismail Degirmencioglu, Nantua (FR); and Jean-Sébestien Moulet, Chambery (FR)
Assigned to Wormsensing, Grenoble (FR); and Commissariat À L'energie Atomique Et Aux Énergies Alternatives, Paris (FR)
Appl. No. 18/245,285
Filed by Wormsensing, Grenoble (FR); and Commissariat À L'énergie Atomique Et Aux Énergies Alternatives, Paris (FR)
PCT Filed Sep. 13, 2021, PCT No. PCT/FR2021/051559
§ 371(c)(1), (2) Date Mar. 14, 2023,
PCT Pub. No. WO2022/053771, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 2009290 (FR), filed on Sep. 14, 2020.
Prior Publication US 2023/0371387 A1, Nov. 16, 2023
Int. Cl. H10N 30/30 (2023.01); G01H 11/08 (2006.01); H10N 30/063 (2023.01); H10N 30/072 (2023.01); H10N 30/87 (2023.01)
CPC H10N 30/302 (2023.02) [G01H 11/08 (2013.01); H10N 30/063 (2023.02); H10N 30/072 (2023.02); H10N 30/87 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A functionalized object comprising a material having a sound absorption coefficient of less than 0.6 in a frequency range ranging from 1 Hz to 40 kHz, and at least one mechanical wave sensor providing the object with a vibration and deformation detection capability, wherein the mechanical wave sensor comprises:
a sensitive cell having a thickness less than or equal to 50 microns, and comprising an active layer made of monocrystalline or polycrystalline piezoelectric material and two electrodes in contact with the active layer and accessible at a first surface of the sensitive cell; and
a support layer comprising a material identical to or capable of adhering to the material of the functionalized object, the support layer secured to a second surface of the sensitive cell and secured to the functionalized object, the support layer being integrated into the material of the functionalized object; and
wherein the functionalized object further comprises at least two electrically conductive strips disposed on the first surface of the sensitive cell and on a surface of the functionalized object, each strip connecting an electrode to an electrical contact pad.