Results 1 to 10 of about 3,329,276 (417)

Fluorescence interferometry [PDF]

open access: yesPhysical Review A, 2010
We describe an interferometer based on fluorescent emission of radiation of two qubits in quasi-one-dimensional modes. Such a system can be readily realized with dipole emitters near conducting surface-plasmonic nanowires or with superconducting qubits ...
G. S. Paraoanu, M. O. Scully
core   +2 more sources

Excitation of emission lines by fluorescence and recombination in IC 418 [PDF]

open access: yesarXiv, 2011
We predict intensities of lines of CII, NI, NII, OI and OII and compare them with a deep spectroscopic survey of IC 418 to test the effect of excitation of nebular emission lines by continuum fluorescence of starlight. Our calculations use a nebular model and a synthetic spectrum of its central star to take into account excitation of the lines by ...
Abrahamsson   +79 more
arxiv   +4 more sources

Absolute absorption and fluorescence measurements over a dynamic range of 10$^6$ with cavity-enhanced laser-induced fluorescence [PDF]

open access: yesarXiv, 2013
We describe a novel experimental setup that combines the advantages of both laser-induced fluorescence and cavity ring-down techniques. The simultaneous and correlated measurement of the ring-down and fluorescence signals yields absolute absorption coefficients for the fluorescence measurement. The combined measurement is conducted with the same sample
Nahler, N. Hendrik   +3 more
arxiv   +2 more sources

Diclofenac: A Nonsteroidal Anti-Inflammatory Drug Inducing Cancer Cell Death by Inhibiting Microtubule Polymerization and Autophagy Flux

open access: yesAntioxidants, 2022
Diclofenac, a nonsteroidal anti-inflammatory drug (NSAID) used to treat inflammatory diseases induces cellular toxicity by increasing the production of reactive oxygen species (ROS) and impairing autophagic flux.
Soohee Choi   +5 more
doaj   +1 more source

Remote Measurements of Tear Electrolyte Concentrations on Both Sides of an Inserted Contact Lens

open access: yesChemosensors, 2023
In this paper, a method is described to perform ion concentration measurements on both sides of an inserted contact lens, without physical contact with the eye or the contact lens. The outer surface of an eye is covered with a tear film that has multiple
Joseph R. Lakowicz   +3 more
doaj   +1 more source

Investigation of variation in fluorescence intensity from rhodamine 6G Dye [PDF]

open access: yesOptik, Volume 291, November 2023, 171351, 2023
Variation in fluorescence intensity from rhodamine 6G dye was investigated. A small volume of dye solution was optically excited with a 0.4 mW, 532nm wavelength cw-laser light. The dye was dissolved in methanol and glycerol for a concentration of 10mg/ml.
arxiv   +1 more source

Silver Nanoparticle Aggregates as Highly Efficient Plasmonic Antennas for Fluorescence Enhancement [PDF]

open access: yes, 2012
The enhanced local fields around plasmonic structures can lead to enhancement of the excitation and modification of the emission quantum yield of fluorophores.
Amerongen, H.   +5 more
core   +11 more sources

A Comparative Study between Frequency-Modulated Continous Wave LADAR and Linear LiDAR [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Topographic Light Detection and Ranging (LiDAR) technology has advanced greatly in the past decade. Pulse repetition rates of terrestrial and airborne systems havemultiplied thus vastly increasing data acquisition rates.
R. D. Massaro   +3 more
doaj   +1 more source

Sawmill waste derived carbon dots as a fluorescent probe for synthetic dyes in soft drinks

open access: yesScientific Reports, 2021
Herein, for the first time the carbon dots (CDs) were synthesized by reflux method from sawmill waste material. We also represent a novel strategy based on fluorescent CDs for determination of ponceau 4R and allura red dyes in soft drinks. Interestingly,
Datta B. Gunjal   +10 more
doaj   +1 more source

Phasor-based hyperspectral snapshot microscopy allows fast imaging of live, three-dimensional tissues for biomedical applications

open access: yesCommunications Biology, 2021
Hedde et al. demonstrate the use of ultrafast phasor-based hyperspectral snapshot microscopy for biomedical imaging. This technique can improve imaging speed by 10-100 fold and enables 3D hyperspectral imaging of live tissues without using expensive and ...
Per Niklas Hedde   +4 more
doaj   +1 more source

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