Results 31 to 40 of about 53,610 (191)

Accounting for polarization in the calibration of a donut beam axial optical tweezers. [PDF]

open access: yesPLoS ONE, 2018
Advances in light shaping techniques are leading to new tools for optical trapping and micromanipulation. For example, optical tweezers made from Laguerre-Gaussian or donut beams display an increased axial trap strength and can impart angular momentum to
Russell Pollari, Joshua N Milstein
doaj   +1 more source

Linear microrheology with optical tweezers of living cells 'is not an option'! [PDF]

open access: yes, 2015
Optical tweezers have been successfully adopted as exceptionally sensitive transducers for microrheology studies of complex fluids. Despite the general trend, in this article I explain why a similar approach should not be adopted for microrheology ...
Tassieri, Manlio
core   +1 more source

Ultra-short bandwidth optical tweezer generation using GaAs ring resonator system

open access: yesResults in Physics, 2019
In this article, the modified add/drop multiplexer system as ring resonator is proposed for optical tweezers generation. The entire effect is analyzed by the nonlinear existence of the proposed structure.
I.S. Amiri   +3 more
doaj   +1 more source

Ray Optics Model for Optical Trapping of Biconcave Red Blood Cells

open access: yesMicromachines, 2022
Red blood cells (RBCs) or erythrocytes are essential for oxygenating the peripherical tissue in the human body. Impairment of their physical properties may lead to severe diseases. Optical tweezers have in experiments been shown to be a powerful tool for
Riccardo Tognato, Philip H. Jones
doaj   +1 more source

Dynamic stereo microscopy for studying particle sedimentation [PDF]

open access: yes, 2014
We demonstrate a new method for measuring the sedimentation of a single colloidal bead by using a combination of optical tweezers and a stereo microscope based on a spatial light modulator.
Ashkin   +25 more
core   +1 more source

Manipulation of Biological Cells Using a Robot-Aided Optical Tweezers System

open access: yesMicromachines, 2018
This article reviews the autonomous manipulation strategies of biological cells utilizing optical tweezers, mainly including optical direct and indirect manipulation strategies. The typical and latest achievements in the optical manipulation of cells are
Mingyang Xie   +2 more
doaj   +1 more source

Independent trapping and manipulation of microparticles using dexterous acoustic tweezers [PDF]

open access: yes, 2014
An electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel functions to trap ...
Cochran, Sandy   +6 more
core   +4 more sources

Moving live dissociated neurons with an optical tweezer [PDF]

open access: yes, 2009
The use of an optical tweezer for moving dissociated neurons was studied. The main features of the tweezers are outlined as well as the general principles of its operation.
Chow, Gary, Pine, Jerome
core   +1 more source

Genetic Material Manipulation and Modification by Optical Trapping and Nanosurgery-A Perspective

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
Light can be employed as a tool to alter and manipulate matter in many ways. An example has been the implementation of optical trapping, the so called optical tweezers, in which light can hold and move small objects with 3D control.
Alfonso Blázquez-Castro   +9 more
doaj   +1 more source

The effect of external forces on discrete motion within holographic optical tweezers [PDF]

open access: yes, 2007
Holographic optical tweezers is a widely used technique to manipulate the individual positions of optically trapped micron-sized particles in a sample.
Eriksson, E.   +4 more
core   +1 more source

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