Results 51 to 60 of about 4,295 (184)
Ultraprecise holographic optical tweezer array
Physical Review ANeutral atoms trapped in microscopic optical tweezers have emerged as a growing platform for quantum science. Achieving homogeneity over the tweezers array is an important technical requirement, and our research focuses on improving it for holographic arrays generated with a Spatial Light Modulator (SLM).
Y. T. Chew +6 more
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Improved axial trapping with holographic optical tweezers
Optics Express, 2015 Conventional optical tweezers suffer from several complications when applying axial forces to surface-tethered molecules. Aberrations from the refractive-index mismatch between an oil-immersion objective's medium and the aqueous trapping environment both shift the trap centre and degrade the trapping strength with focal depth. Furthermore, interference
Russell, Pollari, Joshua N, Milstein
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Applied Sciences, 2019 Optical tweezers are widely used for noninvasive and precise micromanipulation of living cells to understand biological processes. By focusing laser beams on cells, direct cell manipulation with optical tweezers can achieve high precision and flexibility.
Songyu Hu +4 more
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Optical shield: measuring viscosity of turbid fluids using optical tweezers [PDF]
, 2012 The viscosity of a fluid can be measured by tracking the motion of a suspended micron-sized particle trapped by optical tweezers. However, when the particle density is high, additional particles entering the trap compromise the tracking procedure and ...
A. Curran +24 more
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Real-time optical micro-manipulation using optimized holograms generated on the GPU
, 2010 Holographic optical tweezers allow the three dimensional, dynamic, multipoint manipulation of micron sized dielectric objects. Exploiting the massive parallel architecture of modern GPUs we can generate highly optimized holograms at video frame rate ...
Ahrenberg +22 more
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Single-atom trapping and transport in DMD-controlled optical tweezers
New Journal of Physics, 2018 We demonstrate the trapping and manipulation of single neutral atoms in reconfigurable arrays of optical tweezers. Our approach offers unparalleled speed by using a Texas instruments digital micro-mirror device as a holographic amplitude modulator with a
Dustin Stuart, Axel Kuhn
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Optical ordering of nanoparticles trapped by Laguerre-Gaussian laser modes [PDF]
, 2006 In earlier work, it has been established that laser-induced coupling between a pair of nanoparticles can enable the generation of novel patterns, entirely determined and controlled by the frequency, intensity, and polarization of the optical input.
Andrews, D. L., Bradshaw, D.S.
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Auxiliary Optomechanical Tools for 3D Cell Manipulation
Micromachines, 2020 Advances in laser and optoelectronic technologies have brought the general concept of optomechanical manipulation to the level of standard biophysical tools, paving the way towards controlled experiments and measurements of tiny mechanical forces. Recent
Ivan Shishkin +3 more
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, 2020 Three-dimensional harmless contactless manipulation and assembly of micro-objects and micro-organisms would open new horizons in microrobotics and microbiology, e.g. for microsystems assembly or tissue engineering. In our previous work [Gong and Baudoin,
Baudoin, Michael, Gong, Zhixiong
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Roadmap on structured light [PDF]
, 2017 Structured light refers to the generation and application of custom light fields. As the tools and technology to create and detect structured light have evolved, steadily the applications have begun to emerge.
Belmonte Molina, Aniceto +5 more
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