Results 31 to 40 of about 4,302 (205)
Micro-Dumbbells—A Versatile Tool for Optical Tweezers
Micromachines, 2018 Manipulation of micro- and nano-sized objects with optical tweezers is a well-established, albeit still evolving technique. While many objects can be trapped directly with focused laser beam(s), for some applications indirect manipulation with tweezers ...
Weronika Lamperska +4 more
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Position clamping in a holographic counterpropagating optical trap [PDF]
, 2011 Optical traps consisting of two counterpropagating, divergent beams of light allow relatively high forces to be exerted along the optical axis by turning off one beam, however the axial stiffness of the trap is generally low due to the lower numerical ...
Alexander Jesacher +35 more
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Optically driven liquid crystal droplet rotator
Scientific Reports, 2022 In this study, the rotation of liquid crystal droplets induced by elliptically polarized laser light was investigated using optical tweezers. The rotation mechanism was analyzed based on the arrangement of liquid crystal molecules within the droplets ...
Keita Saito, Yasuyuki Kimura
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Creating tunable lateral optical forces through multipolar interplay in single nanowires
Nature Communications, 2023 The concept of lateral optical force (LOF) is of general interest in optical manipulation as it releases the constraint of intensity gradient in tightly focused light, yet such a force is normally limited to exotic materials and/or complex light fields ...
Fan Nan +7 more
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Holographic aberration correction: optimising the stiffness of an optical trap deep in the sample [PDF]
, 2011 We investigate the effects of 1st order spherical aberration and defocus upon the stiffness of an optical trap tens of μm into the sample. We control both these aberrations with a spatial light modulator. The key to maintain optimum trap stiffness over a
Bowman +22 more
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Assembly and force measurement with SPM-like probes in holographic optical tweezers [PDF]
, 2009 We report a high fidelity tomographic reconstruction of the quantum state of photon pairs generated by parametric down-conversion with orbital angular momentum (OAM) entanglement.
D M Carberry +11 more
core +1 more source
Total internal reflection coupling module for generating zero-order-free holographic optical fields [PDF]
APL PhotonicsThe liquid crystal spatial light modulator (LC-SLM) is a widely utilized device for optical field modulation. However, it is commonly plagued by the significant zero-order beam in the output diffraction pattern.
Wenyu Gao +11 more
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Controllable asymmetrical potential wells created by phase profiles of light
Results in Physics, 2021 Optical tweezers, which exploit laser beams to control various particles, have been widely used in many fields. However, the potential wells are typically symmetrical in optical traps, which limit the performance of manipulating particles.
Xionggui Tang, Yanhua Xu, Yi Shen
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Holographic tracking and sizing of optically trapped microprobes in diamond anvil cells [PDF]
, 2016 We demonstrate that Digital Holographic Microscopy can be used for accurate 3D tracking and sizing of a colloidal probe trapped in a diamond anvil cell (DAC).
Bianchi, S. +5 more
core +1 more source
Cells, 2021 Ex vivo-generated red blood cells are a promising resource for future safe blood products, manufactured independently of voluntary blood donations. The physiological process of terminal maturation from spheroid reticulocytes to biconcave erythrocytes has
Claudia Bernecker +5 more
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