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Fast photo-carrier multiplication by engineered potential trap in MoS₂/Ge double junction phototransistor. [PDF]

Sci Rep
Park Y, Jung M, Jeong HB, Jeong HY, Sim S, Yoo G, Heo J.   +6 more
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Optical trapping and binding

Reports on Progress in Physics, 2013
The phenomenon of light's momentum was first observed in the laboratory at the beginning of the twentieth century, and its potential for manipulating microscopic particles was demonstrated by Ashkin some 70 years later. Since that initial demonstration, and the seminal 1986 paper where a single-beam gradient-force trap was realized, optical trapping ...
Richard W, Bowman, Miles J, Padgett
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Laserless Optical Trapping

Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007
We report the use of light from a thermal source for optical trapping and guiding of dielectric microscopic particles. The light source is filtered for increased spatial coherence and subsequently shaped into a white light Bessel beam for reduced spot size and increased optical gradient.
Carlos Lopez-Mariscal, J. C. Gutiérrez-Vega, D. McGloin, K. Dholakia   +3 more
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Optical Trapping in Plant Cells

2013
Optical tweezers allow noninvasive manipulation of subcellular compartments to study their physical interactions and attachments. By measuring (delay of) displacements, (semi-)quantitative force measurements within a living cell can be performed. In this chapter, we provide practical tips for setting up such experiments paying special attention to the ...
Ketelaar, T., de Ruijter, N.C.A., Niehren, S.   +2 more
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Optical trapping of carbon nanotubes

Physica E: Low-dimensional Systems and Nanostructures, 2008
Optical trapping is a new tool for the manipulation and deposition of single wall carbon nanotube (SWNT) bundles. We present a study on optical trapping and manipulation of SWNT bundles in different environments, aimed at understanding the trapping mechanism. SWNTs are dispersed in water or organic solvents, and a wide range of both ionic and non-ionic
Maragò O M, Gucciardi P G, Bonaccorso F, Calogero G, Scardaci V, Rhozin A G, Ferrari A C, Jones P H, Saija R, Borghese F, Denti P, Iatì M A   +11 more
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Optical Traps for Dark Excitons

Physical Review Letters, 2011
We 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, Moore, Michael G., Piermarocchi, Carlo   +2 more
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Multiply loaded magneto-optical trap

Optics Letters, 1996
We 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, N R, Newbury, R W, Ghrist, S, Loutzenhiser, C E, Wieman   +4 more
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Optical Trapping “Virometry”

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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Calibration of optically trapped nanotools

Nanotechnology, 2010
Holographically 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., Simpson, S. H., Grieve, J. A., Wang, Y., Schafer, Helmut, Steinhart, M., Bowman, R., Gibson, G. M., Padgett, M. J., Hanna, S., Miles, M. J.   +10 more
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