Results 11 to 20 of about 190,833 (286)

Magneto-optical Trapping of Cadmium [PDF]

Physical Review A, 2007
We report the laser-cooling and confinement of Cd atoms in a magneto-optical trap, and characterize the loading process from the background Cd vapor.
A. Chew, C. Monroe, D. Hoffman, D. Matsukevich, H. J. Metcalf, J. Flemming, J. M. Kohel, K. E. Gibble, K. L. Corwin, K.-A. Brickman, M. Acton, M.-S. Chang, N. W. M. Ritchie, P. C. Haljan, V. S. Bagnato   +14 more
core   +2 more sources

Numerical Modelling of Optical Trapping [PDF]

Computer Physics Communications, 2001
Optical trapping is a widely used technique, with many important applications in biology and metrology. Complete modelling of trapping requires calculation of optical forces, primarily a scattering problem, and non-optical forces.
A.I. Bishop, Doicu, Draine, Gouesbet, H. Rubinsztein-Dunlop, Kimura, Lock, Mishchenko, Mishchenko, N.R. Heckenberg, Neto, T.A. Nieminen, Tsang, White   +13 more
core   +7 more sources

Optical trapping and manipulating with a transmissive and polarization-insensitive metalens [PDF]

Nanophotonics
Trapping and manipulating micro-objects and achieving high-precision measurements of tiny forces and displacements are of paramount importance in both physical and biological research.
Yang Dongni, Zhang Jianchao, Zhang Pengshuai, Liang Haowen, Ma Jie, Li Juntao, Wang Xue-Hua   +6 more
doaj   +2 more sources

Enhanced optical trapping [PDF]

Optical Manipulation and Structured Materials Conference 2020, 2020
Optical tweezers have contributed substantially to the advancement of micro-manipulation. However, they do have restrictions, mainly the limited range of materials that yield to optical trapping. Here we propose a method of employing optically trapped objects to manipulate the surrounding fluid and thus particles freely diffusing within it.
Butaite, Une G., Gibson, Graham M., Ho, Ying-Lung D., Taverne, Mike, Taylor, Jonathan M., Phillips, David B.   +5 more
openaire   +1 more source

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, Estela Martín-Badosa   +1 more
doaj   +1 more source

Optical Trapping of Sub−Micrometer Particles with Fiber Tapers Fabricated by Fiber Pulling Assisted Chemical Etching

Photonics, 2021
Optical trapping of sub−micrometer particles in three dimensions has been attracting increasing attention in a wide variety of fields such as physics, chemistry, and biologics.
Chaoyang Ti, Yao Shen, Yiming Lei, Yuxiang Liu   +3 more
doaj   +1 more source

Artifact-free holographic light shaping through moving acousto-optic holograms

Scientific Reports, 2021
Holographic light modulation is the most efficient method to shape laser light into well-defined patterns and is therefore the means of choice for many intensity demanding applications.
Dorian Treptow, Raúl Bola, Estela Martín-Badosa, Mario Montes-Usategui   +3 more
doaj   +1 more source

Optical trapping [PDF]

Review of Scientific Instruments, 2004
Since their invention just over 20 years ago, optical traps have emerged as a powerful tool with broad-reaching applications in biology and physics. Capabilities have evolved from simple manipulation to the application of calibrated forces on—and the measurement of nanometer-level displacements of—optically trapped objects.
Keir C, Neuman, Steven M, Block
openaire   +2 more sources

Optical trapping core formation and general trapping mechanism in single-beam optical tweezers

New Journal of Physics, 2022
The working mechanism of single-beam optical tweezers is revisited using a recently established method. The optical force is split into conservative and nonconservative components, and these components are explicitly calculated for particles in the ...
Di Huang, Pengcheng Wan, Ling Zhou, Haiqin Guo, Ruihuang Zhao, Jun Chen, Jack Ng, Junjie Du   +7 more
doaj   +1 more source

Optical trapping at low numerical aperture [PDF]

Journal of the European Optical Society-Rapid Publications, 2011
A theory of optical trapping at low Numerical Aperture (NA) is presented. The theory offers an analytical description of the competition between the stabilizing gradient and destabilizing scattering force.
Stallinga S.
doaj   +1 more source