Results 31 to 40 of about 279,157 (211)
Polarization of fluorescence lines: tracing magnetic field from circumstellar medium to early universe [PDF]
arXiv, 2021 Fluorescence emission lines are broadly applied in observation for diffuse medium in the universe. They are normally observed around strong pumping source, tracing the gas in circumstellar medium, reflection nebula, and H\,{\sc ii} regions, etc.
arxiv
The analysis of fluorophore orientation by multiphoton fluorescence microscopy [PDF]
, 2010 The accessibility of tunable, ultrafast laser sources has spurred the development and wide application of specialized microscopy techniques based on chromophore fluorescence following two- and three-photon absorption.
Andrews, D.L., Leeder, J.M.
core +1 more source
Solvatochromism of (-)-Epigallocatechin 3-O-Gallate (EGCG) Fluorescence: Dependence on Solvent Protonicity [PDF]
arXiv, 2021 Health benefits of EGCG are well established; however, the mechanisms of EGCG action are not completely understood. In our previous study we discovered solvatochromism of EGCG fluorescence and described the dependence of fluorescence maxima on solvent polarity. We also noted that fluorescence intensity (FI) depends on solvent.
arxiv
Fluorescence polarization as a precise tool for understanding nonsequential many-photon ionization [PDF]
Phys Rev. A 100, 011401(R) 2019, 2019 Nonsequential two-photon ionization of inner-shell $np$ subshell of neutral atoms by circularly polarized light is investigated. Detection of subsequent fluorescence as a signature of the process is proposed and the dependence of fluorescence degree of polarization on incident photon beam energy is studied.
arxiv +1 more source
Stain-free detection of embryo polarization using deep learning
Scientific Reports, 2022 Polarization of the mammalian embryo at the right developmental time is critical for its development to term and would be valuable in assessing the potential of human embryos.
Cheng Shen +5 more
doaj +1 more source
Picosecond time-resolved fluorescence of phycobiliproteins [PDF]
, 1990 The α- and β-subunits of C-phycocyanin from Mastigocladus laminosus were prepared according to revised procedures. Both subunits are isolated as dimers, which can be dissociated into monomers with detergent mixtures.
Bryant +46 more
core +1 more source
Self-Assembly of Pheophorbide-a on Poly-L-Lysine [PDF]
arXiv, 2021 Binding of Pheophorbide-a of to poly-L-lysine (PLL) have been studied in neutral aqueous buffered solutions of low and near-physiological ionic strengths with low ethanol content (2.4-5.9 %) a wide range of molar polymer-to-dye ratios (P/D) using absorption and polarized fluorescence spectroscopy, fluorimetric titration, fluorescence melting.
arxiv
Study on Bioagents or Bioaerosols standoff detection by lidar
MATEC Web of Conferences, 2016 Scattering, fluorescence and polarization are the important data source for bioagent or bioaerosol time-space observation and identification. This paper stated and discussed the theory and data inversion principles for Mie scattering, laser induced ...
Yang Hui +5 more
doaj +1 more source
Nanomaterials, 2022 Carbon quantum dots (CQDs) are an excellent eco-friendly fluorescence material, ideal for various ecological testing systems. Herein, we establish uniform microwave synthesis of the group of carbon quantum dots with specific functionalization of ...
Anastasia Yakusheva +5 more
doaj +1 more source
Fluorescence control through vacuum induced coherences [PDF]
J. Phys. B: At. Mol. Opt. Phys. 52, 075402 (2019), 2018 The resonance fluorescence of a four-level atom in J = 1/2 to J = 1/2 transition driven by two coherent fields is studied. We find that the incoherent fluorescence spectrum shows a direct indication of vacuum-induced coherence in the atomic system. We show that such coherence manifests itself via an enhancement or suppression of the spectral peaks in ...
arxiv +1 more source