Results 81 to 90 of about 2,230,771 (150)

Red Blood Cell-Based Biological Micromotors Propelled by Spiral Optical Fields

Photonics
Micromotors play a crucial role in microsystems technology, with applications in nanoparticle propulsion, targeted drug delivery, and biosensing. Optical field propulsion, particularly optical tweezers (OTs), enables precise, noncontact control but ...
Kunpeng Wang, Zhelin Qu, Yifei Chen, Tianli Wu, Chao Feng, Jian Zhang, Xian Zhao, Jun-Lei Wang   +7 more
doaj   +1 more source

Holographic Imaging Reveals the Mechanism of Wall Entrapment in Swimming Bacteria

Physical Review X, 2017
Self-propelled particles, both biological and synthetic, are stably trapped by walls and develop high concentration peaks over bounding surfaces. In swimming bacteria, like E. coli, the physical mechanism behind wall entrapment is an intricate mixture of
Silvio Bianchi, Filippo Saglimbeni, Roberto Di Leonardo   +2 more
doaj   +1 more source

TE1 mode emission in DFB semiconductor lasers based on hybrid mode resonance

APL Photonics
We theoretically analyzed the hybrid transverse mode resonance characteristics of a π-phase-shifted anti-symmetric Bragg grating distributed feedback semiconductor laser and experimentally demonstrated this phenomenon for the first time.
Shenghong Xie, Miao Xv, Yong Zhao, Yining Liang, Laiwen Yu, Tongtong Yang, Lianping Hou, Xiangfei Chen, Feng Wang, Yuechun Shi   +9 more
doaj   +1 more source

Artificial potential field-empowered dynamic holographic optical tweezers for particle-array assembly and transformation

PhotoniX
Owing to the ability to parallel manipulate micro-objects, dynamic holographic optical tweezers (HOTs) are widely used for assembly and patterning of particles or cells. However, for simultaneous control of large-scale targets, potential collisions could
Xing Li, Yanlong Yang, Shaohui Yan, Wenyu Gao, Yuan Zhou, Xianghua Yu, Chen Bai, Dan Dan, Xiaohao Xu, Baoli Yao   +9 more
doaj   +1 more source

Comparison of holographic photopolymer materials by use of analytic nonlocal diffusion models [PDF]

, 2002
The one-dimensional diffusion equation governing holographic grating formation in photopolymers, which includes both nonlocal material response and generalized dependence of the rate of polymerization on the illuminating intensity, has been previously ...
Lawrence, Justin R., O\u27Neill, Feidhlim T., O'Neill, Feidhlim T., Sheridan, John T.   +3 more
core   +1 more source

Precision Construction of Chiral Optical Fields with Nine Controllable Degrees of Freedom

Advanced Photonics Research
Recently, chiral optical fields (COFs) have garnered significant attention due to their multiple controllable degrees of freedom (DOFs), enabling applications in diverse areas such as optical tweezers, manufacturing, and holographic encryption.
Duo Deng, Xing Liu, Zixin Xu, Zhenjun Yang, Yan Li   +4 more
doaj   +1 more source

Versatile Control System for Automated Single-Molecule Optical Tweezers Investigations [PDF]

, 2010
We present a versatile control system to automate single-molecule biophysics experiments. This method combines low-level controls into various functional, user-configurable modules, which can be scripted in a domain-specific instruction language.
Steven J. Koch, Richard C. Yeh
core  

Vortex bifocusing of extreme ultraviolet using modified Fermat-spiral photon-sieve splitter

Nanophotonics
Structured beams carrying orbital angular momentum (OAM) provide powerful capabilities for applications in optical tweezers, super-resolution imaging, quantum optics, and ad-vanced microparticle manipulation.
Liu Yuanyuan, Cui Huaiyu, Shen Yujie, Zhao Yongpeng, Yang Shumin, Wang Gangwei, Tong Xin, Zhang Junyong, Zhan Qiwen   +8 more
doaj   +1 more source

Localized Induction of Gene Expression in Embryonic Stem Cell Aggregates Using Holographic Optical Tweezers to Create Biochemical Gradients. [PDF]

Regen Eng Transl Med, 2020
Kirkham GR, Ware J, Upton T, Allen S, Shakesheff KM, Buttery LD.   +5 more
europepmc   +1 more source

Interactive approach to optical tweezers control [PDF]

, 2006
Padgett, M.J., Gibson, G., Jordan, P., Thomson, L., Leach, J., Courtial, J., Cooper, J., Wulff, K., Sinclair, G., Laczik, Z., Karunwi, K.   +10 more
core   +1 more source