Patent · US Active

Laser tweezer system for measuring acoustic vibrations of nanoparticles

US10234428B2 · kind B2 · utility

0Cited by

14References

25Claims

0Family size

Inventors

Reuven Gordon · Victoria, CA
Skyler Wheaton · Victoria, CA
Ryan M. Gelfand · Victoria, CA

Key dates

Filing date	Dec 23, 2014
Grant date	Mar 19, 2019
Priority date	—
Expiry date	Dec 28, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/023
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Optically trapped specimens (typically nanoparticles having diameters between 1 and 50 nm) are excited with an optical beam so as to induce vibrations in the specimens. A trapping optical beam and the excitation optical beam can produce vibrations based on a difference frequency based on the trapping optical beam and the excitation optical beam. Scattered optical radiation as a function of modulation frequency can be recorded and used to identify or characterize the specimen.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.