Results 61 to 70 of about 6,678,115 (243)

Deep learning-based method for analyzing the optically trapped sperm rotation

open access: yesScientific Reports, 2023
Optical tweezers exert a strong trapping force on cells, making it crucial to analyze the movement of trapped cells. The rotation of cells plays a significant role in their swimming patterns, such as in sperm cells. We proposed a fast deep-learning-based
Jiangcheng Zhao   +3 more
doaj   +1 more source

Nonlinear Magneto-Optical Rotation Magnetometers

open access: yes, 2017
Nonlinear magneto-optical rotation (NMOR) is the nonlinear contribution to the overall magneto-optical rotation (Faraday) signal. It yields signals that are dependent on the light and magnetic-field intensities.
W. Gawlik, S. Pustelny
semanticscholar   +1 more source

Fundamentals of cavity-enhanced polarimetry for parity-nonconserving optical rotation measurements: Application to Xe, Hg, and I [PDF]

open access: yes, 2013
We present the theoretical basis of a cavity-enhanced polarimetric scheme for the measurement of parity-nonconserving (PNC) optical rotation. We discuss the possibility of detecting PNC optical rotation in accessible transitions in metastable Xe and Hg ...
Lykourgos Bougas   +3 more
semanticscholar   +1 more source

Observation of Optical Chemical Shift by Precision Nuclear Spin Optical Rotation Measurements and Calculations. [PDF]

open access: yesJournal of Physical Chemistry Letters, 2012
Nuclear spin optical rotation (NSOR) is a recently developed technique for detection of nuclear magnetic resonance via rotation of light polarization, instead of the usual long-range magnetic fields.
Jun-Hui Shi   +3 more
semanticscholar   +1 more source

Ultrasensitive Protein Concentration Characterization Based on Weak Measurements

open access: yesPhotonic Sensors, 2022
An optical rotation bio-sensor based on the photonic spin Hall effect was established and applied to detecting the concentration varieties of chiral molecules.
Bowen Song   +3 more
doaj   +1 more source

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]

open access: yes, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +1 more source

A sensitivity-enhanced optical heterodyne polarimeter for the measurement of optical rotation angle of chiral media [PDF]

open access: yes, 2011
[[abstract]]A novel heterodyne polarimeter is designed to measure the concentration of chiral media. Optical common-path for the interference of the TE and TM waves, after a polarizer, is set up in our system to reduce noises from the environment.
Tsai,Y. C.;Wu,C. M.
core   +1 more source

Comparisons of Optical Properties of Glucose Sensing by Mueller Matrix Polarimetry Using Infrared and Visible Wavelengths

open access: yesIEEE Photonics Journal
A Mueller matrix polarimetry system with 1650 nm wavelength is developed to extract the mean absorbance and anisotropic properties of turbid media as an enabling technology for non-invasive glucose sensing.
Yu-Ren Chen, Yu-Lung Lo, Wei-Chun Hung
doaj   +1 more source

Strong Faraday Rotation Based on Localized Surface Plasmon Enhancement of Embedded Metallic Nanoparticles in Glass

open access: yesSmall Science, 2022
The Faraday rotation originates from the mechanism by which the time‐reversal symmetry in the material is broken by the external magnetic field. It is the basis for the development of some magneto‐optical devices, such as optical isolators. In integrated
Han Zhu   +7 more
doaj   +1 more source

Stereochemistrical Determination of Dexlansoprazole by Optical Rotation, ECD and 13 C-NMR

open access: yes, 2015
Dexlansoprazole is an outstandingproton pump inhibitors, which is a chiral sulfoxide. We firstly report determination of the absolute configuration (AC) of dexlansoprazole by the combination of experimental and calculated optical rotation (OR ...
Zhi-Xu Zhou   +5 more
semanticscholar   +1 more source

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