Results 71 to 80 of about 53,610 (191)
Alkaline earth atoms in optical tweezers [PDF]
, 2018 We demonstrate single-shot imaging and narrow-line cooling of individual alkaline earth atoms in optical tweezers; specifically, strontium-88 atoms trapped in $515.2~\text{nm}$ light.
Cooper, Alexandre +5 more
core +3 more sources
Scanning holographic optical tweezers
Optics Letters, 2017 The aim of this Letter is to introduce a new optical tweezers approach, called scanning holographic optical tweezers (SHOT), which drastically increases the working area (WA) of the holographic-optical tweezers (HOT) approach, while maintaining tightly focused laser traps. A 12-fold increase in the WA is demonstrated.
L A, Shaw +3 more
openaire +2 more sources
Materials Today AdvancesThe rheological properties of red blood cells (RBCs) are crucial for human health. Combining optical tweezers with microfluidics provides a non-contact, sensitive, and high-throughput method for studying RBC rheology.
Ying Liu +10 more
doaj +1 more source
Multi-frequency passive and active microrheology with optical tweezers
Scientific Reports, 2021 Optical tweezers have attracted significant attention for microrheological applications, due to the possibility of investigating viscoelastic properties in vivo which are strongly related to the health status and development of biological specimens.
Randhir Kumar +5 more
doaj +1 more source
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
Devil’s lens optical tweezers
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
Radio Frequency Magneto-Optical Trapping of CaF with High Density [PDF]
, 2017 We demonstrate significantly improved magneto-optical trapping of molecules using a very slow cryogenic beam source and RF modulated and DC magnetic fields. The RF MOT confines $1.1(3) \times 10^5$ CaF molecules at a density of $4(1) \times 10^6$ cm$^{-3}
Anderegg, Loic +9 more
core +3 more sources
Quantum limited particle sensing in optical tweezers [PDF]
, 2009 Particle sensing in optical tweezers systems provides information on the position, velocity and force of the specimen particles. The conventional quadrant detection scheme is applied ubiquitously in optical tweezers experiments to quantify these ...
B. J. Berne +4 more
core +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