Results 221 to 230 of about 40,788 (259)
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Optical Traps for Dark Excitons
Physical Review Letters, 2011We propose a mechanism for optical trapping of dark excitons by linearly polarized unabsorbed standing waves, with a potential depth of the order of a few meV. Since this trapping, based on carrier exchanges with virtual excitons coupled to unabsorbed photons, equally acts on bright and dark states, Bose-Einstein condensation of excitons--which occurs ...
Combescot, Monique +2 more
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Multiply loaded magneto-optical trap
Optics Letters, 1996We report a two-chambered, differentially pumped system that permits rapid collection of trapped atoms with a vapor cell magneto-optical trap (MOT) and efficient transfer of these atoms to a second MOT in a lowerpressure chamber. During the transfer the atoms are guided down a long, thin tube by a magnetic potential, with 90(15%) transfer efficiency ...
C J, Myatt +4 more
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Optics in the Life Sciences, 2013
We present an optical trapping “virometry” that allows sorting of nanoscale particles such as viruses under physiological conditions. As an example, we use this technique to quantitate heterogeneities among individual HIV-1 virions at single-molecule resolution.
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We present an optical trapping “virometry” that allows sorting of nanoscale particles such as viruses under physiological conditions. As an example, we use this technique to quantitate heterogeneities among individual HIV-1 virions at single-molecule resolution.
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Calibration of optically trapped nanotools
Nanotechnology, 2010Holographically trapped nanotools can be used in a novel form of force microscopy. By measuring the displacement of the tool in the optical traps, the contact force experienced by the probe can be inferred. In the following paper we experimentally demonstrate the calibration of such a device and show that its behaviour is independent of small changes ...
Carberry, D. M. +10 more
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Microinstrument gradient-force optical trap
Applied Optics, 1999A micromachined fiber-optic trap is presented. The trap consists of four single-mode, 1064-nm optical intersection. The beam fibers mounted in a micromachined silicon and glass housing. Micromachining provides the necessary precision to align the four optical fibers so that the outputs have a common intersection forms a strong three-dimensional ...
S D, Collins, R J, Baskin, D G, Howitt
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Programmable icosahedral shell system for virus trapping
Nature Materials, 2021Wouter Engelen +2 more
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Magneto-optical trapping and sub-Doppler cooling of a polyatomic molecule
Nature, 2022Nathaniel B Vilas +2 more
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The kinetics of metal oxide photoanodes from charge generation to catalysis
Nature Reviews Materials, 2021Sacha Corby, R R Rao, Ludmilla Steier
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