Results 21 to 30 of about 16,949 (114)

Optical skipping rope induced transverse OAM for particle orbital motion parallel to the optical axis

open access: yesNanophotonics, 2023
In structured light tweezers, it is a challenging technical issue to realize the complete circular motion of the trapped particles parallel to the optical axis.
Zhu Liuhao   +5 more
doaj   +1 more source

Optical Tweezers in Human Cancers

open access: yesZhongliu 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

Micro-Dumbbells—A Versatile Tool for Optical Tweezers

open access: yesMicromachines, 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   +4 more
doaj   +1 more source

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

open access: yesApplied 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

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

open access: yesMethods 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   +2 more
doaj   +1 more source

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

open access: yesApplied 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   +4 more
doaj   +1 more source

Microscopic Control and Detection of Ultracold Strontium in Optical-Tweezer Arrays

open access: yesPhysical Review X, 2018
Optical tweezers provide a versatile platform for the manipulation and detection of single atoms. Here, we use optical tweezers to demonstrate a set of tools for the microscopic control of atomic strontium, which has two valence electrons.
M. A. Norcia   +2 more
doaj   +1 more source

Optical tweezing of microparticles and cells using silicon-photonics-based optical phased arrays

open access: yesNature Communications
Integrated optical tweezers have the potential to enable highly-compact, low-cost, mass-manufactured, and broadly-accessible optical manipulation when compared to standard bulk-optical tweezers.
Tal Sneh   +5 more
doaj   +1 more source

Drug Targeting Model of Composite Gold-Tourmaline for Cells Enhancing Applications

open access: yesNano Biomedicine and Engineering, 2015
The drug delivery and targeting method of gold tourmaline composite atoms generated by optical tweezers in a micro-optical device system is proposed.
Preecha P. Yupapin, Senee Suwandee
doaj   +1 more source

Magnetic tweezers to capture the fast-folding λ6-85 in slow motion

open access: yesCommunications Physics
Force spectroscopy gives access to the underlying free energy landscape of protein folding. Proteins exhibit folding rates between microseconds and hours.
César Augusto Quintana-Cataño   +5 more
doaj   +1 more source

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