Showing 2,141 - 2,160 results of 4,366 for search '"optics"', query time: 0.05s Refine Results
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    Quark-Nova Explosion inside a Collapsar: Application to Gamma Ray Bursts by Rachid Ouyed, Denis Leahy, Jan Staff, Brian Niebergal

    Published 2009-01-01
    “…Prompt gamma-ray burst emission from internal shocks in relativistic jets (following accretion onto the quark star) becomes visible after the cap becomes optically thin. Model features include (i) precursor activity (optical, X-ray, γ-ray), (ii) prompt γ-ray emission, and (iii) afterglow emission. …”
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  6. 2146

    A Simple Numerical Model to Estimate the Temperature Distributions Over Photodetectors in Steady-State by Ergun Simsek, Alexander S. Hastings, David A. Tulchinsky, Keith J. Williams, Curtis R. Menyuk

    Published 2024-01-01
    “…These insights contribute to the understanding and optimization of thermal management in photodetectors under strong optical excitations.…”
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  7. 2147

    Kinematic calculation of micro mirror elements in micro electro-mechanical systems (MEMS) by D. I. Chernyavsky, D. D. Chernyavsky

    Published 2021-03-01
    “…The paper considers the kinematic calculation of the design of a micromirror with a reflective layer of high optical quality of the surface for deflecting the reflected laser beam. …”
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  8. 2148

    Breather Positons and Rogue Waves for the Nonlocal Fokas-Lenells Equation by Chun Wang, Rong Fan, Zhao Zhang, Biao Li

    Published 2021-01-01
    “…We believe that these interesting findings exist in the optical system corresponding to the nonlocal Fokas-Lenells equation.…”
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  9. 2149

    Metrological studies of the characteristics of multilayer surface coatings using synchrotron radiation by A. S. Sigov, O. A. Minaeva, S. I. Anevsky, A. M. Lebedev, R. V. Minaev

    Published 2021-03-01
    “…Computer modeling of multi-layer coatings allows us to calculate the optical characteristics of superlattices in the extreme ultraviolet region. …”
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    Dynamic processes during accretion into a black hole by G. S. Bisonvatyi-kogan

    Published 2001-01-01
    “…Sources of turbulence in the accretion disc are discussed, including nonlinear hydrodynamic turbulence, convection and magnetic filed role. In parallel to the optically thick geometrically thin accretion disc models, a new branch of the optically thin accretion disc models was discovered, with a larger thickness for the same total luminosity. …”
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    The optoelectronic properties of boron nitride nanotubes of armchair (7, 7) and zigzag (12, 0) types: A theoretical study by El Ouardi Oumaima, Boutahir Mourad, Fakrach Brahim, Chadli Hassan

    Published 2025-01-01
    “…In this article, the electronic and optical properties of single-walled boron nitride nanotubes (SWBNNTs) in zigzag (12, 0) and armchair (7, 7) configurations were examined using density functional theory (DFT) with the Vienna Ab initio Simulation Package (VASP). …”
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  14. 2154

    Modification of Low Refractive Index Polycarbonate for High Refractive Index Applications by Gunjan Suri, Gouri Shankar Jha, Geetha Seshadri, Rakesh Kumar Khandal

    Published 2009-01-01
    “…Polycarbonates and polythiourethanes are the most popular materials in use today, for optical applications. Polycarbonates are of two types which fall in the category of low refractive index and medium refractive index. …”
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  15. 2155

    Cherenkov radiation energy transfer from [18F]-fluorodeoxyglucose to subphthalocyanine fluorophores by Lioret, Vivian, Decréau, Richard A.

    Published 2024-11-01
    “…Cherenkov radiation (CR) is an optical light that is emitted during the decay of beta-particle-emitting radionuclides, such as 18F, which is present in [18F]-fluorodeoxyglucose, a well-known tracer used in positron emission tomography. …”
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  16. 2156

    Exact Solutions to the Nonlinear Schrödinger Equation with Time-Dependent Coefficients by Xin-Lei Mai, Wei Li, Shi-Hai Dong

    Published 2021-01-01
    “…This system might be used to describe the propagation of ultrashort optical pulses in nonlinear optical fibers, with self-steepening and self-frequency shift effects. …”
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  17. 2157

    Estimation of the nonlinear dependence of the indications of a fiber Bragg grating on temperature and strain from experimental data by Aleksey Shestakov, Igor Shardakov, Irina Glot, Valery Yepin, Georgiy Gusev, Roman Tsvetkov

    Published 2022-09-01
    “… The readings of the Bragg grating are determined based on the optical radiation reflected from it. A quantitative characteristic of this radiation is the wavelength at which the maximum power of the optical signal is achieved. …”
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  18. 2158

    Fiber Bragg Grating-Based Performance Monitoring of Piles Fiber in a Geotechnical Centrifugal Model Test by Xiaolin Weng, Jianxun Chen, Jun Wang

    Published 2014-01-01
    “…However, recent advances in fiber optic sensing technologies enable the accurate and reliable monitoring of strain and temperature in laboratory geotechnical tests. …”
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    Polarization Möbius strip at the tight focus of a generalized Poincaré beam by V.V. Kotlyar, A.A. Kovalev, A.M. Telegin

    Published 2024-08-01
    “…For superposition of a right-handed circularly polarized plane wave with a left-handed circularly polarized optical vortex with topological charge –1, we obtain expressions for the intensity distribution and the longitudinal component of the spin angular momentum vector at the tight focus. …”
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  20. 2160

    GaN Nanopowder synthesis via nitridation: Fabrication and characterization of GaN thin Films for UV detection applications by Mahdi Hajimazdarani, Peyman Yaghoubizadeh, Ali Jafari, Ali Kenarsari Moghadam, Mojtaba Hajimazdarani, Mohammad Javad Eshraghi

    Published 2025-01-01
    “…These findings underscore the potential of gallium nitride-based materials for advanced optical sensor applications in various fields.…”
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