Results 31 to 40 of about 888 (159)
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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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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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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Computer-generated holographic optical tweezer arrays [PDF]
Review of Scientific Instruments, 2001 Holographic techniques significantly extend the capabilities of laser tweezing, making possible extended trapping patterns for manipulating large numbers of particles and volumes of soft matter. We describe practical methods for creating arbitrary configurations of optical tweezers using computer-generated diffractive optical elements.
Dufresne, Eric R. +4 more
openaire +2 more sources
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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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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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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Composite Diffraction-Free Beam Formation Based on Iteratively Calculated Primitives
Micromachines, 2023 To form a diffraction-free beam with a complex structure, we propose to use a set of primitives calculated iteratively for the ring spatial spectrum. We also optimized the complex transmission function of the diffractive optical elements (DOEs), which ...
Pavel A. Khorin +2 more
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Compliant rolling-contact architected materials for shape reconfigurability
Nature Communications, 2018 The authors introduce a compliant rolling-contact architected material as a class of shape reconfigurable mechanical metamaterial. They also devise an approach that combines two photon stereolithography and scanning holographic optical tweezers, which ...
Lucas A. Shaw +4 more
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