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  • 1
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    Predicting radiative transport properties of plasma sprayed porous ceramics (2016)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2016-04-01
    Description: The typical yttria-stabilized zirconia material for making the thermal barrier coatings (TBCs) is intrinsically semitransparent to thermal radiation, and the unique disordered microstructures in TBCs make them surprisingly highly scattering. To quantitatively understand the influence of disordered microstructures, this paper presents a quantitative prediction on the radiative properties, especially the transport scattering coefficient of plasma sprayed TBC based on microstructure analysis and rigorous electromagnetic theory. The impact of the porosity, shape, size, and orientation of different types of voids on transport scattering coefficient is comprehensively investigated under the discrete dipole approximation. An inverse model integrating these factors together is then proposed to quantitatively connect transport scattering coefficient with microstructural information, which is also validated by available experimental data. Afterwards, an optimization procedure is carried out based on this model to obtain the optimal size and orientation distribution of the microscale voids to achieve the maximal radiation insulation performance at different operating temperatures, providing guidelines for practical coating design and fabrication. This work suggests that the current model is effective and also efficient for connecting scattering properties to microstructures and can be implemented as a quantitative tool for further studies like non-destructive infrared imaging as well as micro/nanoscale thermal design of TBCs.
    Print ISSN: 0021-8979
    Electronic ISSN: 1089-7550
    Topics: Physics
    Published by American Institute of Physics (AIP)
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  • 2
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    Topological photonic states in one-dimensional dimerized ultracold atomic chains (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-08-07
    Description: Author(s): B. X. Wang and C. Y. Zhao We study the topological optical states in one-dimensional dimerized ultracold atomic chains, as an extension of the Su-Schrieffer-Heeger (SSH) model. By taking the fully retarded near-field and far-field dipole-dipole interactions into account, we describe the system by an effective non-Hermitian H... [Phys. Rev. A 98, 023808] Published Mon Aug 06, 2018
    Keywords: Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Topological phonon polaritons in one-dimensional non-Hermitian silicon carbide nanoparticle chains (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-10-25
    Description: Author(s): B. X. Wang and C. Y. Zhao Topological phonon polaritons (TPhPs) are highly protected and localized edge modes that are capable of achieving a strong confinement of electromagnetic waves and immune to impurities and disorder. Here we realize TPhPs by constructing one-dimensional dimerized silicon carbide nanoparticle chains, ... [Phys. Rev. B 98, 165435] Published Wed Oct 24, 2018
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Achieving a strongly negative scattering asymmetry factor in random media composed of dual-dipolar particles (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-02-24
    Description: Author(s): B. X. Wang and C. Y. Zhao Understanding radiative transfer in random media like micro- or nanoporous and particulate materials, allows people to manipulate the scattering and absorption of radiation, as well as opens new possibilities in applications such as imaging through turbid media, photovoltaics, and radiative cooling.... [Phys. Rev. A 97, 023836] Published Fri Feb 23, 2018
    Keywords: Quantum optics, physics of lasers, nonlinear optics, classical optics
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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