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Mesoscale Photonic Method Increases Range of Optical Tweezers

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JAKE SALTZMAN, NEWS EDITOR
[email protected]

TOMSK, Russia, Aug. 27, 2020 — A team from Tomsk Polytechnic University (TPU), working with scientists from the V.E. Zuev Institute of Atmospheric Optics of the Siberian Branch of the Russian Academy of Sciences, has increased the operation range and stability of optical tweezers. In the team’s method, light, interacting with a microparticle, is focused in the form of a photon jet in the direction opposite the radiation incidence. The photon jet functions as a trap. Forming a photon jet from a dielectric particle with the ratio of a particle and a medium higher than two can increase the optical traps’...Read full article

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    Published: August 2020
    Glossary
    photon jet
    A photon jet is a narrow, highly collimated beam of light that is formed when light interacts with small dielectric microstructures, such as microspheres or microcylinders. This phenomenon arises due to the focusing effect caused by the scattering and interference of light waves. When a beam of light interacts with a dielectric microstructure that is much smaller than the wavelength of light, such as a subwavelength particle, it can produce constructive interference along certain...
    optical tweezers
    Optical tweezers refer to a scientific instrument that uses the pressure of laser light to trap and manipulate microscopic objects, such as particles or biological cells, in three dimensions. This technique relies on the momentum transfer of photons from the laser beam to the trapped objects, creating a stable trapping potential. Optical tweezers are widely used in physics, biology, and nanotechnology for studying and manipulating tiny structures at the microscale and nanoscale levels. Key...
    metrology
    Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement, including the development of measurement standards, techniques, and instruments, as well as the application of measurement principles in various fields. The primary objectives of metrology are to ensure accuracy, reliability, and consistency in measurements and to establish traceability to recognized standards. Metrology plays a crucial role in science, industry,...
    EuropeRussiaTomsk Polytechnic UniversityIgor MininOleg Mininphoton jetoptical tweezersoptical trapmicroparticlesmirrorsmesoscaleResearch & TechnologyeducationmetrologyPhotonics EuropeEuro News

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