Results 21 to 30 of about 43,409 (185)
Micromachines, 2022 The highly focused laser beam is capable of confining micro-sized particle in its focus. This is widely known as optical trapping. The Janus particle is composed of two hemispheres with different refractive indexes.
Xiaoqing Gao +5 more
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Optical Trapping at Gigapascal Pressures [PDF]
Physical Review Letters, 2013 Diamond anvil cells allow the behavior of materials to be studied at pressures up to hundreds of gigapascals in a small and convenient instrument. However, physical access to the sample is impossible once it is pressurized. We show that optical tweezers can be used to hold and manipulate particles in such a cell, confining micron-sized transparent ...
Bowman, R.W. +4 more
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Optical trapping and manipulation of nanostructures [PDF]
Nature Nanotechnology, 2013 Optical trapping and manipulation of micrometre-sized particles was first reported in 1970. Since then, it has been successfully implemented in two size ranges: the subnanometre scale, where light-matter mechanical coupling enables cooling of atoms, ions and molecules, and the micrometre scale, where the momentum transfer resulting from light ...
Maragò +9 more
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Independent trapping, manipulation and characterization by an all-optical biophotonics workstation [PDF]
Journal of the European Optical Society-Rapid Publications, 2008 Optical trapping has enabled a multitude of applications focusing, in particular, on non-invasive studies of cellular material. The full potential of optical trapping has, however, not yet been exploited due to restricted access to the trapped samples ...
Ulriksen Hans-Ulrik +7 more
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Ramsey Imaging of Optical Traps [PDF]
Physical Review Applied, 2021 Mapping the potential landscape with high spatial resolution is crucial for quantum technologies based on ultracold atoms. Yet, imaging optical dipole traps is challenging because purely optical methods, commonly used to profile laser beams in free space, are not applicable in vacuum.
Gautam Ramola +6 more
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Optical Trapping, Sensing, and Imaging by Photonic Nanojets
Photonics, 2021 The optical trapping, sensing, and imaging of nanostructures and biological samples are research hotspots in the fields of biomedicine and nanophotonics.
Heng Li +4 more
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Microrheology With an Anisotropic Optical Trap [PDF]
Frontiers in Physics, 2021 Microrheology with optical tweezers (MOT) measurements are usually performed using optical traps that are close to isotropic across the plane being imaged, but little is known about what happens when this is not the case. In this work, we investigate the effect of anisotropic optical traps on microrheology measurements.
Matheson, Andrew B. +6 more
openaire +4 more sources
A hybrid method to calculate optical torque: Application to a nano-dumbbell trapped by a metalens
AIP Advances, 2022 The hyper-fast rotation frequency realized in an optical levitation system provides an essential platform for various applications. Benefiting from the development of integrated photonics, optically trapping and manipulating a micro-particle via a ...
Chuang Sun, Jize Yan
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Scalable trapping of single nanosized extracellular vesicles using plasmonics
Nature Communications, 2023 Heterogeneous nanoscale extracellular vesicles (EVs) are of significant interest for disease detection, monitoring, and therapeutics. However, trapping these nano-sized EVs using optical tweezers has been challenging due to their small size.
Chuchuan Hong, Justus C. Ndukaife
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Energy Reviews, 2023 Optical tweezers system has emerged as an efficient tool to manipulate tiny particles in a non-invasive way. Trapping stiffness, as an essential parameter of an optical potential well, represents the trapping stability.
Xiaolin Chen +10 more
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