The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2025
Filed:
Mar. 11, 2021
Universite Paris-saclay, Gif-sur-Yvette, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite Paris Cité, Paris, FR;
Ecole Nationale Superieure DE Mecanique ET Des Microtechniques, Besançon, FR;
Etienne Herth, Villeneuve-Saint-Georges, FR;
Thomas Baron, Besançon, FR;
Philippe Brunet, Paris, FR;
UNIVERSITE PARIS-SACLAY, Gif-sur-Yvette, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris, FR;
UNIVERSITE PARIS CITÉ, Paris, FR;
ECOLE NATIONALE SUPERIEURE DE MECANIQUE ET DES MICROTECHNIQUES, Besançon, FR;
Abstract
A method for generating a stirring in a fluid microdrop, the volume of which is preferably greater than several tens of nanolitres, using an actuator device comprising a high-overtone bulk acoustic resonator HBAR having a quality factor Q of at least 100 in air and including a support which is substantially flat and coated with a layer of dielectric material. The HBAR resonator is associated with a modulatable electronic device capable of generating high-frequency waves. The method envisages depositing, on the support, a fluid microdrop, generating a sinusoidal electrical signal by controlling the modulatable electronic device at a chosen frequency, the frequency being between 100 MHz and 4 GHz, and transformation of the sinusoidal electrical signal having the chosen frequency into high-frequency acoustic waves (OA) by the HBAR resonator.