Acoustofluidic device configured for allowing resonance frequency tracking and methods therefor
US12115533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2023 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Nov 27, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1486
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An acoustofluidic device includes a substrate and an ultrasound transducer contacting the substrate. The substrate and the transducer combined have a set of acoustic natural system resonances determined by the material and the dimensions of the substrate and the transducer. Each system resonance has a resonance frequency and a resonance quality factor. A microfluidic cavity is provided in the substrate to contain a fluid, the cavity having a set of acoustic natural cavity resonances, each having a resonance frequency and a resonance quality factor, determined by the dimensions of the cavity and the speed of sound in a fluid to be contained in the cavity. The material and the dimensions of the substrate and the transducer are selected so that at least one individual cavity resonance has a resonance frequency corresponding to the frequency of a minimum in an impedance spectrum of the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.