Results 81 to 90 of about 118,744 (375)

Theoretical Analysis and Experimental Verification of the Influence of Polarization on Counter-Propagating Optical Tweezers

Micromachines, 2023
Counter-propagating optical tweezers are experimental platforms for the frontier exploration of science and precision measurement. The polarization of the trapping beams significantly affects the trapping status. Using the T-matrix method, we numerically
Ming Chen, Wenqiang Li, Jianyu Yang, Mengzhu Hu, Shidong Xu, Xunmin Zhu, Nan Li, Huizhu Hu   +7 more
doaj   +1 more source

Holographic tracking and sizing of optically trapped microprobes in diamond anvil cells [PDF]

, 2016
We demonstrate that Digital Holographic Microscopy can be used for accurate 3D tracking and sizing of a colloidal probe trapped in a diamond anvil cell (DAC).
Bianchi, S., Bowman, R., Di Leonardo, R., Gibson, G., Padgett, M., Saglimbeni, F.   +5 more
core   +1 more source

Opto-hydrodynamic tweezers

Lab on a Chip
The manuscript unveils a portable optofluidic device for precise trapping, manipulation, and sorting of single cells/particles using a single standard unmodified optical fiber in a microfluidic channel—a notable advance in optofluidic technology.
Shreyas Vasantham, Abhay Kotnala, Yurii Promovych, Piotr Garstecki, Ladislav Derzsi   +4 more
openaire   +2 more sources

All-dielectric silicon metalens for two-dimensional particle manipulation in optical tweezers [PDF]

Photonics Research, 2020
Dynamic control of compact chip-scale contactless manipulation of particles for bioscience applications remains a challenging endeavor, which is restrained by the balance between trapping efficiency and scalable apparatus.
T. Chantakit, C. Schlickriede, B. Sain, F. Meyer, T. Weiss, N. Chattham, T. Zentgraf   +6 more
semanticscholar   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, EarlyView.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

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

Communications 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, Ann Mukhortava, Mordjane A. Boukhet, Andreas Hartmann, Karl-Ludwig Schumann, Michael Schlierf   +5 more
doaj   +1 more source

Sagnac Interferometer Enhanced Particle Tracking in Optical Tweezers

, 2010
A setup is proposed to enhance tracking of very small particles, by using optical tweezers embedded within a Sagnac interferometer. The achievable signal-to-noise ratio is shown to be enhanced over that for a standard optical tweezers setup.
Berne B J, H-A Bachor, Hsu M T L, J Knittel, M A Taylor, M T L Hsu, Sehgal H, Treps N, Van De Hulst H C, W P Bowen   +9 more
core   +1 more source

Seconds-scale coherence in a tweezer-array optical clock [PDF]

, 2019
Optical clocks based on atoms and ions achieve exceptional precision and accuracy, with applications to relativistic geodesy, tests of relativity, and searches for dark matter.
Eckner, William J., Kaufman, Adam M., Norcia, Matthew A., Oelker, Eric, Ye, Jun, Young, Aaron W.   +5 more
core   +2 more sources

Growth of Millimeter‐Sized BaTaO2N Single Crystals by an NH3‐Assisted BaCl2 Flux Method

Advanced Functional Materials, EarlyView.
Millimeter‐sized BaTaO2N single crystals are successfully grown from a BaCl2 flux under NH3 flow. Their comprehensive characterization, including dielectric properties, is demonstrated, and the possible growth mechanisms are discussed. Abstract Perovskite‐type oxynitrides have attracted considerable attention due to their excellent photocatalytic ...
Ginji Harada, Mirabbos Hojamberdiev, Hajime Wagata   +2 more
wiley   +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