Showing 1,181 - 1,200 results of 1,490 for search '"photonics"', query time: 0.04s Refine Results
  1. 1181

    An MRI, SPECT and Neuropsychological Study of a Patient Presenting with Capgras Syndrome by J. Mackie, K. P. Ebmeier, R. E. O'Carroll

    Published 1994-01-01
    “…The patient underwent detailed neuropsychological, single photon emission computed tomography (SPECT) and magnetic resonance imaging (MRI) investigations. …”
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  2. 1182

    Towards non-blinking and photostable perovskite quantum dots by Chenjia Mi, Gavin C. Gee, Chance W. Lander, Donghoon Shin, Matthew L. Atteberry, Novruz G. Akhmedov, Lamia Hidayatova, Jesse D. DiCenso, Wai Tak Yip, Bin Chen, Yihan Shao, Yitong Dong

    Published 2025-01-01
    “…Here, we show that single CsPbBr3 quantum dots covered by stacked phenethylammonium ligands exhibit nearly non-blinking single photon emission with high purity (~ 98%) and extraordinary photostability (12 hours continuous operation and saturated excitations), allowing the determination of size-dependent exciton radiative rates and emission line widths of CsPbBr3 quantum dots at the single particle level.…”
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  3. 1183

    Enhancing the efficiency of a wavelength-dispersive spectrometer based on a slitless design using a single-bounce monocapillary by Karina Bzheumikhova, Y. Kayser, R. Unterumsberger, J. Weser, C. Stadelhoff, B. Beckhoff

    Published 2025-01-01
    “…This configuration enhances photon throughput while preserving energy resolution, demonstrated in comparative measurements on boron nitride and different lithium nickel manganese cobalt oxide cathodes. …”
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  4. 1184

    Multi-messenger probes of asteroid mass primordial black holes: Superradiance spectroscopy, Hawking radiation, and microlensing by James B. Dent, Bhaskar Dutta, Tao Xu

    Published 2025-02-01
    “…Using axion-like particles as an example, we show that line signals emerging from a superradiated axion cloud combined with black hole Hawking radiation in extragalactic and galactic halos, along with microlensing observations lead to complementary constraints on parameter space combinations including the axion-photon coupling, axion mass, black hole mass, and its dark matter fraction, fPBH. …”
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  5. 1185

    Analysis of the spiking dynamics of a diode laser with dual optical feedback by John P. Bannon, Eli Main, Thomas Hill, Andrés Aragoneses

    Published 2025-01-01
    “…This study investigates the impact of competing feedback sources on a stochastic complex dynamical system using a photonic neuron—a diode laser with external optical feedback. …”
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  6. 1186

    Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos by Debasish Borah, Nayan Das, Sahabub Jahedi, Bhavya Thacker

    Published 2025-01-01
    “…Considering DM relic to be generated via the thermal freeze-out, we check the discovery prospects at future lepton colliders via mono-photon plus missing energy searches. The right chiral parts of light Dirac neutrinos get thermalised due to their interactions with the bath as well as leptophilic DM, leading to enhanced effective relativistic degrees of freedom N eff within reach of future cosmic microwave background (CMB) experiments. …”
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  7. 1187
  8. 1188
  9. 1189

    A Comprehensive Study on Gamma Rays and Fast Neutron Sensing Properties of GAGOC and CMO Scintillators for Shielding Radiation Applications by Shams A. M. Issa, M. I. Sayyed, M. H. M. Zaid, K. A. Matori

    Published 2017-01-01
    “…The geometrical progression (G-P) method has been used to compute the exposure buildup factors (EBF) and gamma ray energy absorption (EABF) in the photon energy range 0.015–15 MeV and up to a 40 penetration depth (mfp). …”
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  10. 1190

    A Quantum Sensor for Neutrino Mass Measurements by Juan Manuel Cornejo, Daniel Rodríguez

    Published 2012-01-01
    “…The device will allow measuring atomic masses, and therefore Q-values from decays with unprecedented accuracy and sensitivity, using fluorescence photons from a laser-cooled ion instead of electronic detection. …”
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  11. 1191

    Oxytetracycline photodegradation by transition metals doped ZnO nanorods by Siavash Fathi, Bagher Aslibeiki, Reza Torkamani

    Published 2023-08-01
    “…The variation of band gap permits absorption of low energy photons and excitation of valence band electrons. …”
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  12. 1192

    Translaminar synchronous neuronal activity is required for columnar synaptic strengthening in the mouse neocortex by John Vargas-Ortiz, Lin Lin, Vena K. Martinez, Rong-jian Liu, Rachel Babij, Zhe Ran S. Duan, Sam Wacks, Liyuan Sun, Amanda Wang, Sajida Khan, John Lee Soto-Vargas, Natalia V. De Marco García, Alicia Che

    Published 2025-02-01
    “…Using a novel microprism preparation and in vivo 2-photon imaging in neonatal mice, we show that synchronous neuronal activity is organized in barrel columns across layers. …”
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  13. 1193

    Bricks non-destructive simulation testing method utilizing neutron radiography facility based on a 7Li(p,n)7Be reaction by Jacob G. Fantidis, Athanasia Κ. Thomoglou, Maristella Ε. Voutetaki, Bassam Tayeh, George Nikolaou

    Published 2025-01-01
    “…For fast neutron radiography, the study evaluated parameters such as geometric unsharpness, fast neutron flux, and the percentage of the uncollided fast neutron reaching the object. Both neutrons and photons from the source were used to inspect faults in a glass brick.…”
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  14. 1194

    Nonlinear memristive computational spectrometer by Xin Li, Jie Wang, Feilong Yu, Jin Chen, Xiaoshuang Chen, Wei Lu, Guanhai Li

    Published 2025-01-01
    “…Here, we introduce a computational spectrometer powered by a nonlinear photonic memristor with a WSe2 homojunction. This approach overcomes traditional limitations, such as constrained Fermi level tunability, persistent dark current, and limited photoresponse dimensionality through dynamic energy band modulation driven by palladium (Pd) ion migration. …”
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  15. 1195

    A New Interpretation for the Hot Corona in Active Galactic Nuclei by Yu Zhao, Yan-Rong Li, Jian-Min Wang

    Published 2025-01-01
    “…Within this reconnection layer, the tearing instability leads to the formation of a chain of plasmoids, which contain relativistic electrons that generate X-ray radiation through inverse-Compton (IC) scattering of soft photons emitted by the accretion disk. Based on previous theoretical works and numerical simulations, we develop a heuristic framework to parameterize the geometry and magnetization of the reconnection layer, as well as to compute both the power of the IC-scattering radiation and the height of the reconnection layer. …”
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  16. 1196

    Insight into the Molecular Imaging of Alzheimer’s Disease by Abishek Arora, Neeta Bhagat

    Published 2016-01-01
    “…Functional imaging like positron emission tomography (PET), single photon emission computed tomography (SPECT), functional magnetic resonance imaging (fMRI), and proton magnetic resonance spectroscopy provides a means of detecting and characterising the regional changes in brain blood flow, metabolism, and receptor binding sites that are associated with Alzheimer’s disease. …”
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  17. 1197
  18. 1198

    Calculation of Lead-Iron Double-Layer Thickness for Gamma-Ray Shielding by MATLAB Program by Sarai Lekchaum, Kitsakorn Locharoenrat

    Published 2017-01-01
    “…This contribution is aimed at designing the optimal thickness of lead-iron double-layer container to store a radioactive waste releasing the photon energy at 1.3325 MeV and initial radiation intensity at 100 mSv/hr using the optimization design by MATLAB software. …”
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  19. 1199

    Non-Orthogonality of QAM and Sunflower-like Modulated Coherent-State Signals by Kentaro Kato

    Published 2025-01-01
    “…Results show that PSK NOI increases faster than QAM and SUN as the number of signals increases for a given number of signal photons. QAM and SUN exhibit similar NOI and detection probability, behaving similarly to randomly generated signals for a larger number of signals. …”
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  20. 1200

    Live imaging of excitable axonal microdomains in ankyrin-G-GFP mice by Christian Thome, Jan Maximilian Janssen, Seda Karabulut, Claudio Acuna, Elisa D'Este, Stella J Soyka, Konrad Baum, Michael Bock, Nadja Lehmann, Johannes Roos, Nikolas A Stevens, Masashi Hasegawa, Dan A Ganea, Chloé M Benoit, Jan Gründemann, Lia Y Min, Kalynn M Bird, Christian Schultz, Vann Bennett, Paul M Jenkins, Maren Engelhardt

    Published 2025-02-01
    “…Using confocal, superresolution, and two-photon microscopy as well as whole-cell patch-clamp recordings in vitro, ex vivo, and in vivo, we confirm that the subcellular scaffold of the AIS and electrophysiological parameters of labeled cells remain unchanged. …”
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