Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Slovick, Brian A."'
Autor:
Slovick, Brian
Publikováno v:
Modern Physics Letters A 2150197, 1-6 (2021)
Within the background field formalism of quantum gravity, I show that if the quantum fluctuations are limited to diffeomorphic gauge transformations rather than the physical degrees of freedom, as in conventional quantum field theory, all the quantum
Externí odkaz:
http://arxiv.org/abs/2108.13917
Autor:
Slovick, Brian, Hellhake, Josh
We develop and apply an optimization method to design invisibility cloaks. Our method is based on minimizing the forward scattering amplitude of the cloaked object, which by the optical theorem, is equivalent to the total cross section. The use of th
Externí odkaz:
http://arxiv.org/abs/2103.03979
Autor:
Slovick, Brian A., Matlin, Erik
We develop and implement a new mathematical and computational framework for designing photonic elements with one or more high-$Q$ scattering resonances. The approach relies on solving for the poles of the scattering matrix, which mathematically amoun
Externí odkaz:
http://arxiv.org/abs/1909.07798
Autor:
Slovick, Brian, Krishnamurthy, Srini
We evaluate the impact of acoustic Mie resonance in nanoparticles on the thermal conductivity of semiconductor and polymer composites. By appropriately choosing the bulk modulus and density, and selecting the size of the nanoparticle to align the Mie
Externí odkaz:
http://arxiv.org/abs/1809.08913
Autor:
Slovick, Brian, Krishnamurthy, Srini
We obtain a nonperturbative, analytical solution to integral equation of scattering theory by assuming the field within the scattering object is a spherical wave with a scattering amplitude equal to that of the far field. This approximation transform
Externí odkaz:
http://arxiv.org/abs/1805.10146
Publikováno v:
Scientific reports 7, 17245 (2017)
We solve the nonlinear Maxwell equations in an InP-based dielectric metamaterial, considering both two-photon absorption and photo-induced free-carrier absorption. We obtain the intensity-dependent reflection, absorption, and effective permittivity a
Externí odkaz:
http://arxiv.org/abs/1709.09726
Publikováno v:
Applied Optics 56(21), 5890 (2017)
We develop a transfer matrix formalism for four-flux radiative transfer models, which is ideally suited for studying transport through multiple scattering layers. The model, derived for spherical particles within the diffusion approximation, predicts
Externí odkaz:
http://arxiv.org/abs/1705.05453
Autor:
Slovick, Brian A
Publikováno v:
Phys. Rev. B 95, 094202 (2017)
An effective medium model is developed for disordered metamaterials containing a spatially random distribution of dielectric spheres. Similar to effective medium models for ordered metamaterials, this model predicts resonances in the effective permea
Externí odkaz:
http://arxiv.org/abs/1610.08704
Autor:
Slovick, Brian A., Zhou, You, Yu, Zhi Gang, Kravchenckou, Ivan I., Briggs, Dayrl P., Moitra, Parikshit, Krishnamurthy, Srini, Valentine, Jason
Publikováno v:
Phil. Trans. R. Soc. A 375, 20160072 (2017)
Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are one of the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical m
Externí odkaz:
http://arxiv.org/abs/1610.04040
Publikováno v:
Appl. Phys. Lett. 109, 141905 (2016)
We develop an effective medium model of thermal conductivity that accounts for both percolation and interface scattering. This model accurately explains the measured increase and decrease of thermal conductivity with loading in composites dominated b
Externí odkaz:
http://arxiv.org/abs/1606.07851