Results 71 to 80 of about 2,721,612 (374)

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

Frontiers 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, Alfonso Blázquez-Castro, José Fernández-Piqueras, José Fernández-Piqueras, José Fernández-Piqueras, José Fernández-Piqueras, Javier Santos, Javier Santos, Javier Santos, Javier Santos   +9 more
doaj   +1 more source

Computer-Generated Holographic Optical Tweezer Arrays

, 2000
Holographic techniques significantly extend the capabilities of laser tweezing, making possible extended trapping patterns for manipulating large numbers of particles and volumes of soft matter.
Dearing, Matthew T., Dufresne, Eric R., Grier, David G., Sheets, Steven A., Spalding, Gabriel C.   +4 more
core   +1 more source

Optical Tweezers in Human Cancers

Zhongliu Fangzhi Yanjiu
Optical tweezers are a means to manipulate objects with light. Optical tweezers can obtain a nanometer space, piconewton force, and a millisecond resolution; thus, they are excellently suited for studying biological processes from the single-cell to the ...
ZHANG Baihong, YUE Hongyun
doaj   +1 more source

Optical Assembling of Micro-Particles at a Glass–Water Interface with Diffraction Patterns Caused by the Limited Aperture of Objective

Applied Sciences, 2018
Optical tweezers can manipulate micro-particles, which have been widely used in various applications. Here, we experimentally demonstrate that optical tweezers can assemble the micro-particles to form stable structures at the glass–solution interface in ...
Min-Cheng Zhong, Ai-Yin Liu, Rong Zhu
doaj   +1 more source

Design of Optical Tweezers Manipulation Control System Based on Novel Self-Organizing Fuzzy Cerebellar Model Neural Network

Applied Sciences, 2022
Holographic optical tweezers have unique non-physical contact and can manipulate and control single or multiple cells in a non-invasive way. In this paper, the dynamics model of the cells captured by the optical trap is analyzed, and a control system ...
Jing Zhao, Hui Hou, Qi-Yu Huang, Xun-Gao Zhong, Peng-Sheng Zheng   +4 more
doaj   +1 more source

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

, 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., Goksör, M., Keen, S., Leach, J., Padgett, M.   +4 more
core   +1 more source

Micro-Dumbbells—A Versatile Tool for Optical Tweezers

Micromachines, 2018
Manipulation of micro- and nano-sized objects with optical tweezers is a well-established, albeit still evolving technique. While many objects can be trapped directly with focused laser beam(s), for some applications indirect manipulation with tweezers ...
Weronika Lamperska, Sławomir Drobczyński, Michał Nawrot, Piotr Wasylczyk, Jan Masajada   +4 more
doaj   +1 more source

Calibration of trap stiffness and viscoelasticity in polymer solutions [PDF]

, 2008
We present an experimental demonstration of a method using optical tweezers proposed by Fischer and Berg-Sorensen for measuring viscoelasticity using optical tweezers.
Alvarez-Elizondo, Martha B., Heckenberg, Norman, Nieminen, Timo A., Persson, Martin, Roelofs, Susan H., Rubinsztein-Dunlop, Halina   +5 more
core   +1 more source

Optical Trapping and Manipulation of Superparamagnetic Beads Using Annular-Shaped Beams

Methods and Protocols, 2018
We propose an optical tweezers setup based on an annular-shaped laser beam that is efficient to trap 2.8 μ m-diameter superparamagnetic particles.
Leandro Oliveira, Warlley H. Campos, Marcio S. Rocha   +2 more
doaj   +1 more source

Relaxing constraints on data acquisition and position detection for trap stiffness calibration in optical tweezers [PDF]

, 2020
Optical tweezers find applications in various fields, ranging from biology to physics. One of the fundamental steps necessary to perform quantitative measurements using trapped particles is the calibration of the tweezer's spring constant. This can be done through power spectral density analysis, from forward scattering detection of the particle's ...
arxiv   +1 more source