Results 11 to 20 of about 39,013 (312)

Optofluidic Tweezers: Efficient and Versatile Micro/Nano-Manipulation Tools

Micromachines, 2023
Optical tweezers (OTs) can transfer light momentum to particles, achieving the precise manipulation of particles through optical forces. Due to the properties of non-contact and precise control, OTs have provided a gateway for exploring the mysteries ...
Yuchen Zhu, Minmin You, Yuzhi Shi, Haiyang Huang, Zeyong Wei, Tao He, Sha Xiong, Zhanshan Wang, Xinbin Cheng   +8 more
doaj   +1 more source

Narrow-line imaging of single strontium atoms in shallow optical tweezers [PDF]

Phys. Rev. Research 4, 023245 (2022), 2022
Single strontium atoms held in optical tweezers have so far only been imaged using the broad $^{1\hspace{-0.3ex}}S_0$-$^{1\hspace{-0.3ex}}P_1$ transition. For Yb, use of the narrow (183 kHz-wide) $^{1\hspace{-0.3ex}}S_0$-$^{3\hspace{-0.3ex}}P_1$ transition for simultaneous imaging and cooling has been demonstrated in tweezers with a magic wavelength ...
arxiv   +1 more source

Holographic acoustic tweezers [PDF]

Proceedings of the National Academy of Sciences, 2018
Significance Holographic optical tweezers use focused light to manipulate multiple objects independently without contact. They are used in tasks such as measuring the spring constant of DNA, the pulling force of the kinesin protein, or to trap matter in exotic states. Differently, acoustic tweezers use sound radiation forces to trap particles
Asier Marzo, Bruce W. Drinkwater
openaire   +7 more sources

Laser Scissors and Tweezers to Study Chromosomes: A Review

Frontiers in Bioengineering and Biotechnology, 2020
Starting in 1969 laser scissors have been used to study and manipulate chromosomes in mitotic animal cells. Key studies demonstrated that using the “hot spot” in the center of a focused Gaussian laser beam it was possible to delete the ribosomal genes ...
Michael W. Berns, Michael W. Berns, Michael W. Berns, Michael W. Berns, Michael W. Berns, Michael W. Berns   +5 more
doaj   +1 more source

Quantum Tweezer for Atoms [PDF]

Physical Review Letters, 2002
We propose a quantum tweezer for extracting a desired number of neutral atoms from a reservoir. A trapped Bose-Einstein condensate (BEC) is used as the reservoir, taking advantage of its coherent nature, which can guarantee a constant outcome. The tweezer is an attractive quantum dot, which may be generated by red-detuned laser light.
Mark G. Raizen, Biao Wu, Biao Wu, Qian Niu, Roberto B. Diener   +4 more
openaire   +4 more sources

Single-Beam Acoustic Tweezer Prepared by Lead-Free KNN-Based Textured Ceramics

Micromachines, 2022
Acoustic tweezers for microparticle non-contact manipulation have attracted attention in the biomedical engineering field. The key components of acoustic tweezers are piezoelectric materials, which convert electrical energy to mechanical energy. The most
Yi Quan, Chunlong Fei, Wei Ren, Lingyan Wang, Jinyan Zhao, Jian Zhuang, Tianlong Zhao, Zhaoxi Li, Chenxi Zheng, Xinhao Sun, Kun Zheng, Zhe Wang, Matthew Xinhu Ren, Gang Niu, Nan Zhang, Tomoaki Karaki, Zhishui Jiang, Li Wen   +17 more
doaj   +1 more source

Heat in optical tweezers [PDF]

SPIE Proceedings, 2013
Laser-induced thermal effects in optically trapped microspheres and single cells have been investigated by Luminescence Thermometry. Thermal spectroscopy has revealed a non-localized temperature distribution around the trap that extends over tens of microns, in agreement with previous theoretical models.
William T. Ramsay, J. García-Solé, Ajoy K. Kar, Daniel Jaque, Daniel Jaque, Daniel Jaque, Debaditya Choudhury, Paloma Rodríguez-Sevilla, Laura Martínez Maestro, Patricia Haro-González, L. Patterson, B. del Rosal, M. C. Iglesias-de la Cruz, Karla Santacruz-Gómez, Karla Santacruz-Gómez, Francisco Sanz-Rodríguez, J. Y. Chooi   +16 more
openaire   +3 more sources

Optical Frequency Tweezers [PDF]

Physical Review Applied, 2022
We show a concept of optical frequency tweezers for tweezing light in the optical frequency domain with a high resolution, which is the frequency version of the optical tweezers for spatial manipulation of microscopic objects. We report the proof-of-principle experiment via frequency conversion inside a cavity only for the converted light.
Rikizo Ikuta, Masayo Yokota, Toshiki Kobayashi, Nobuyuki Imoto, Takashi Yamamoto   +4 more
openaire   +2 more sources

Optical tweezers and their applications [PDF]

Journal of Quantitative Spectroscopy and Radiative Transfer, 2018
Optical tweezers, tools based on strongly focused light, enable optical trapping, manipulation, and characterisation of a wide range of microscopic and nanoscopic materials. In the limiting cases of spherical particles either much smaller or much larger than the trapping wavelength, the force in optical tweezers separates into a conservative gradient ...
Polimeno P, Magazzù A, Iati' M A, Patti F, Saija R, Degli Esposti Boschi C, Donato M G, Gucciardi P G, Jones P H, Volpe G, Marago' O M   +10 more
openaire   +3 more sources

3D-Printed Micro-Tweezers with a Compliant Mechanism Designed Using Topology Optimization

Micromachines, 2021
The development of handling technology for microscopic biological samples such as cells and spheroids has been required for the advancement of regenerative medicine and tissue engineering.
Yukihito Moritoki, Taichi Furukawa, Jinyi Sun, Minoru Yokoyama, Tomoyuki Shimono, Takayuki Yamada, Shinji Nishiwaki, Tatsuto Kageyama, Junji Fukuda, Masaru Mukai, Shoji Maruo   +10 more
doaj   +1 more source