Results 11 to 20 of about 43,409 (185)
Enhanced optical trapping [PDF]
Optical Manipulation and Structured Materials Conference 2020, 2020 Optical tweezers have contributed substantially to the advancement of micro-manipulation. However, they do have restrictions, mainly the limited range of materials that yield to optical trapping. Here we propose a method of employing optically trapped objects to manipulate the surrounding fluid and thus particles freely diffusing within it.
Butaite, Une G. +5 more
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Positioning Accuracy in Holographic Optical Traps
Micromachines, 2021 Spatial light modulators (SLMs) have been widely used to achieve dynamic control of optical traps. Often, holographic optical tweezers have been presumed to provide nanometer or sub-nanometer positioning accuracy.
Frederic Català-Castro +1 more
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Photonics, 2021 Optical trapping of sub−micrometer particles in three dimensions has been attracting increasing attention in a wide variety of fields such as physics, chemistry, and biologics.
Chaoyang Ti +3 more
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Artifact-free holographic light shaping through moving acousto-optic holograms
Scientific Reports, 2021 Holographic light modulation is the most efficient method to shape laser light into well-defined patterns and is therefore the means of choice for many intensity demanding applications.
Dorian Treptow +3 more
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Review of Scientific Instruments, 2004 Since their invention just over 20 years ago, optical traps have emerged as a powerful tool with broad-reaching applications in biology and physics. Capabilities have evolved from simple manipulation to the application of calibrated forces on—and the measurement of nanometer-level displacements of—optically trapped objects.
Keir C, Neuman, Steven M, Block
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Holographic optical trapping [PDF]
Applied Optics, 2006 8 pages, 7 figures, invited contribution to Applied Optics focus issue on Digital ...
Grier, David G., Roichman, Yael
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Optical Trapping of Nanoparticles [PDF]
Journal of Visualized Experiments, 2013 Optical trapping is a technique for immobilizing and manipulating small objects in a gentle way using light, and it has been widely applied in trapping and manipulating small biological particles. Ashkin and co-workers first demonstrated optical tweezers using a single focused beam.
Jarrah, Bergeron +4 more
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Optical trapping core formation and general trapping mechanism in single-beam optical tweezers
New Journal of Physics, 2022 The working mechanism of single-beam optical tweezers is revisited using a recently established method. The optical force is split into conservative and nonconservative components, and these components are explicitly calculated for particles in the ...
Di Huang +7 more
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Optical trapping of an ion [PDF]
Nature Photonics, 2010 For several decades, ions have been trapped by radio frequency (RF) and neutral particles by optical fields. We implement the experimental proof-of-principle for trapping an ion in an optical dipole trap. While loading, initialization and final detection are performed in a RF trap, in between, this RF trap is completely disabled and substituted by the ...
Schneider, Christian M. +3 more
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Optical trapping at low numerical aperture [PDF]
Journal of the European Optical Society-Rapid Publications, 2011 A theory of optical trapping at low Numerical Aperture (NA) is presented. The theory offers an analytical description of the competition between the stabilizing gradient and destabilizing scattering force.
Stallinga S.
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