Photoacoustic tweezers
US12303900B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2021 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Oct 18, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1415
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention discloses a method and an apparatus for trapping and manipulating particles, relating to the field of acoustic manipulation. The invention discloses a photoacoustic tweezers, which use bimodal transducer generate a weak acoustic wave and a strong acoustic wave. The strong acoustic wave behaves as an effective gain medium to amplify the acoustic radiation force of this weak acoustic wave. After an interference of the strong acoustic wave and the weak acoustic wave, an amplified trapping force is produced for achieving the trapping and manipulation of particles. The invention can manipulate several particles simultaneously in high throughput and particles of various sizes ranging from 1 μm to 1 mm. The invention can form reconfigurable acoustic fields which permits versatile and selective manipulation with no need of complicated acoustic arrays. The invention is a versatile, biocompatible, selective and high-throughput manipulation method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.