Results 41 to 50 of about 16,949 (114)

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, Chenxi Huang, Jacob P. Covey, Bryce Gadway   +3 more
doaj   +1 more source

Optical Tweezers: Phototoxicity and Thermal Stress in Cells and Biomolecules

Micromachines, 2019
For several decades optical tweezers have proven to be an invaluable tool in the study and analysis of myriad biological responses and applications. However, as with every tool, they can have undesirable or damaging effects upon the very sample they are ...
Alfonso Blázquez-Castro
doaj   +1 more source

Spatially selective manipulation of cells with single-beam acoustical tweezers

Nature Communications, 2020
Acoustical tweezers can exert forces several orders of magnitude greater than optical tweezers but the absence of spatial selectivity and their limited resolution has prevented their use for many applications in microbiology.
Michael Baudoin, Jean-Louis Thomas, Roudy Al Sahely, Jean-Claude Gerbedoen, Zhixiong Gong, Aude Sivery, Olivier Bou Matar, Nikolay Smagin, Peter Favreau, Alexis Vlandas   +9 more
doaj   +1 more source

Optical trapping and optical binding using cylindrical vector beams

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
We report on the use of cylindrical vector beams for optical manipulation of micron and sub-micron sized particles using the methods of a single-beam gradient force trap (optical tweezers) and an evanescent-field surface trap (optical binding).
S. E. Skelton, M. Sergides, R. Patel, E. Karczewska, O. M. Marago', P. H. Jones   +5 more
doaj   +1 more source

Optical Nanotweezers Based on All-Dielectric Resonant Structures

Advanced Devices & Instrumentation
Optical tweezers are a valuable tool for manipulating micro- and nano-objects due to their noncontact and nondestructive nature. These features render them highly valuable for applications such as biological detection and precision measurement.
Hongyang Xu, Xi Xie, Siwei Chen, Yanan Fu, Yuquan Zhang, Xiaocong Yuan, Changjun Min   +6 more
doaj   +1 more source

Orientation- and wavelength-dependent sperm motility in optical trapping

Journal of Innovative Optical Health Sciences
Optical tweezers technology has the characteristics of noncontact manipulation in three dimensions and steerable separation in solutions, and could be applied to obtain a separated sperm with high quality for intracytoplasmic sperm injection (ICSI ...
Juan Wang, Jifu Lyu, Haoyu Pan, Xinyu Fan, Xiang Jiang, Xuhui Bao, Yi Wang, Fengya Lu, Zhiguo Zhang, Zhensheng Zhong, Jinhua Zhou   +10 more
doaj   +1 more source

Experimental investigation on optical vortex tweezers for microbubble trapping

Open Physics, 2018
In this paper, we investigated the microbubble trapping using optical vortex tweezers. It is shown that the microbubble can be trapped by the vortex optical tweezers, in which the trapping light beam is of vortex beam.
Zhou Xiaoming, Chen Ziyang, Liu Zetian, Pu Jixiong   +3 more
doaj   +1 more source

Optical trapping and manipulating with a transmissive and polarization-insensitive metalens

Nanophotonics
Trapping and manipulating micro-objects and achieving high-precision measurements of tiny forces and displacements are of paramount importance in both physical and biological research.
Yang Dongni, Zhang Jianchao, Zhang Pengshuai, Liang Haowen, Ma Jie, Li Juntao, Wang Xue-Hua   +6 more
doaj   +1 more source

Development of electromagnetic tweezers for single-molecule energetics of kinesin

Biophysics and Physicobiology
Optical tweezers have enabled single-molecule measurements of kinesin mechanics and energetics but face challenges for in vivo applications due to photothermal effects and refractive-index-dependent force calibration.
Haruyuki Fukuzawa, Yuga Ihara, Masato Sawa, Hidekazu Shirai, Sawako Enoki, Keigo Ikezaki, Taketoshi Kambara, Yasushi Okada   +7 more
doaj   +1 more source

Label-Free Continuous Cell Sorting Using Optofluidic Chip

Micromachines
In the field of biomedicine, efficiently and non-invasively isolating target cells has always been one of the core challenges. Optical fiber tweezers offer precise and non-invasive manipulation of cells within a medium and can be easily integrated with ...
Yingjie Zhang, Tao Zhang, Xinchun Zhang, Jingmeng Cheng, Sixiang Zhang   +4 more
doaj   +1 more source