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Holographic Technique Traps Irregularly Shaped Microscopic Objects

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An optical manipulation technique that can securely control the position, orientation and shape of non-spherical microscopic samples, such as living cells, could have direct applications in biophotonics and soft matter physics. Most experiments using optical tweezers have focused on trapping spherical particles, where the optical forces and responding motion of microspheres can be easily predicted based on physical principles. However, when this method is used for trapping objects with complicated shapes, it can induce unstable motion in the particles and provide only limited control of...Read full article

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    Published: May 2017
    Glossary
    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...
    holography
    Holography is a technique used to capture and reconstruct three-dimensional images using the principles of interference and diffraction of light. Unlike conventional photography, which records only the intensity of light, holography records both the intensity and phase information of light waves scattered from an object. This allows the faithful reproduction of the object's three-dimensional structure, including its depth, shape, and texture. The process of holography typically involves the...
    Research & TechnologyeducationAsia-PacificLasersBiophotonicsmedicalmedicineImagingimaging and sensingmicrocscopyOpticsoptical manipulationoptical tweezersholographyBioScan

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