Results 21 to 30 of about 2,534,041 (331)

Optical tweezers and their applications [PDF]

open access: yesJournal 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 ...
P. Polimeno   +10 more
semanticscholar   +4 more sources

Rotational Coherence Times of Polar Molecules in Optical Tweezers. [PDF]

open access: yesPhysical Review Letters, 2021
Qubit coherence times are critical to the performance of any robust quantum computing platform. For quantum information processing using arrays of polar molecules, a key performance parameter is the molecular rotational coherence time.
Sean Burchesky   +7 more
semanticscholar   +1 more source

Exploring cell and tissue mechanics with optical tweezers.

open access: yesJournal of Cell Science, 2022
Cellular and tissue biosystems emerge from the assembly of their constituent molecules and obtain a set of specific material properties. To measure these properties and understand how they influence cellular function is a central goal of mechanobiology ...
Frederic Català-Castro   +2 more
semanticscholar   +1 more source

Heat in optical tweezers [PDF]

open access: yesSPIE 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   +16 more
openaire   +3 more sources

Interferometric Optical Tweezers [PDF]

open access: yesOptics and Photonics News, 1996
Abstract We report the first experimental demonstration of an optical trap that uses interference fringes for the trapping and micro-manipulation of microscopic objects. The finges can be generated either by two-beam interference or by projecting a reduced image of a Ronchi ruling on the sample plane.
Chiou, Arthur E   +4 more
openaire   +5 more sources

Theory of optical tweezers [PDF]

open access: yesEurophysics Letters (EPL), 2000
4 pages, 3 ...
H. M. Nussenzveig, P. A. Maia Neto
openaire   +2 more sources

Plasmonic Optical Tweezers for Particle Manipulation: Principles, Methods, and Applications.

open access: yesACS Nano, 2021
Inspired by the idea of combining conventional optical tweezers with plasmonic nanostructures, a technique named plasmonic optical tweezers (POT) has been widely explored from fundamental principles to applications.
Yatao Ren   +5 more
semanticscholar   +1 more source

Optical tweezers-controlled hotspot for sensitive and reproducible surface-enhanced Raman spectroscopy characterization of native protein structures

open access: yesNature Communications, 2021
Surface-enhanced Raman spectroscopy (SERS) has emerged as a powerful tool to detect biomolecules in aqueous environments. However, it is challenging to identify protein structures at low concentrations, especially for the proteins existing in an ...
Xin Dai   +7 more
semanticscholar   +1 more source

Utilization of Optical Tweezer Nanotechnology in Membrane Interaction Studies

open access: yesApplied Nano, 2022
Optical tweezers have been a fixture of microscopic cell manipulation since the 1990s. Arthur Ashkin’s seminal work has led to the advancement of optical tweezers as an effective tool for assay development in the fields of physics and nanotechnology.
Arnith Eechampati, Chamaree de Silva
doaj   +1 more source

Optical Tweezers: A Comprehensive Tutorial from Calibration to Applications [PDF]

open access: yes, 2020
Since their invention in 1986 by Arthur Ashkin and colleagues, optical tweezers have become an essential tool in several fields of physics, spectroscopy, biology, nanotechnology, and thermodynamics.
Jan Gieseler   +11 more
semanticscholar   +1 more source

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