Results 71 to 80 of about 53,364 (200)
Sagnac Interferometer Enhanced Particle Tracking in Optical Tweezers
, 2010 A setup is proposed to enhance tracking of very small particles, by using optical tweezers embedded within a Sagnac interferometer. The achievable signal-to-noise ratio is shown to be enhanced over that for a standard optical tweezers setup.
Berne B J +9 more
core +1 more source
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
core +1 more source
Optics Express, 2015 We demonstrate an optical tweezers using a laser beam on which is imprinted a focusing phase profile generated by a Devil's staircase fractal structure (Cantor set). We show that a beam shaped in this way is capable of stably trapping a variety of micron- and submicron-sized particles and calibrate the optical trap as a function of the control ...
Jixiong, Pu, P H, Jones
openaire +2 more sources
Feasibility of Multiple Micro-Particle Trapping—A Simulation Study
Sensors, 2015 Both optical tweezers and acoustic tweezers have been demonstrated for trapping small particles in diverse biomedical applications. Compared to the optical tweezers, acoustic tweezers have deeper penetration, lower intensity, and are more useful in light
Yanyan Yu +3 more
doaj +1 more source
Gray molasses cooling of ^{39}K atoms in optical tweezers
Physical Review Research, 2022 Robust cooling and nondestructive imaging are prerequisites for many emerging applications of neutral atoms trapped in optical tweezers, such as their use in quantum information science and analog quantum simulation.
Jackson Ang'ong'a +3 more
doaj +1 more source
Seconds-scale coherence in a tweezer-array optical clock [PDF]
, 2019 Optical clocks based on atoms and ions achieve exceptional precision and accuracy, with applications to relativistic geodesy, tests of relativity, and searches for dark matter.
Eckner, William J. +5 more
core +2 more sources
Plasmonic Tweezers towards Biomolecular and Biomedical Applications
Applied Sciences, 2019 With the capability of confining light into subwavelength scale, plasmonic tweezers have been used to trap and manipulate nanoscale particles. It has huge potential to be utilized in biomolecular research and practical biomedical applications.
Xue Han, Changsen Sun
doaj +1 more source
Direct observation of the effects of spin dependent momentum of light in optical tweezers
APL Photonics, 2020 We demonstrate that tight focusing of a circularly polarized Gaussian beam in optical tweezers leads to spin-momentum locking—with the transverse momentum density (Poynting vector) being helicity-dependent, while the transverse spin angular momentum ...
Debapriya Pal +3 more
doaj +1 more source
An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
, 2016 Large arrays of individually controlled atoms trapped in optical tweezers are a very promising platform for quantum engineering applications. However, to date, only disordered arrays have been demonstrated, due to the non-deterministic loading of the ...
Barredo, Daniel +4 more
core +3 more sources
Partial synchronisation of stochastic oscillators through hydrodynamic coupling
, 2012 Holographic optical tweezers are used to construct a static bistable optical potential energy landscape where a Brownian particle experiences restoring forces from two nearby optical traps and undergoes thermally activated transitions between the two ...
Arran Curran +5 more
core +1 more source