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Showing 1 to 12 of 12 for “"Casimir Force"”.
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Casimir Force in Non-Planar Geometric Configurations
The Casimir force for charge-neutral, perfect conductors of non-planar geometric configurations have been investigated. The configurations were: (1) the plate-hemisphere, (2) the hemisphere-hemisphere and (3) the spherical shell. The resulting Casimir forces for these physical arrangements have …
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A study on computational electromagnetics problems with applications to casimir force calculations
… layered media (DGLM) and the calculation of the Casimir force using computational electromagnetics (CEM). The calculation of the DGLM is desirable for many problems that involve stratified media, like the cases of the subsurface of the earth and seabed, or circuits involving layers of substrates. …
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An enhanced augmented electric field integral equation and the calculation of casimir force using computational electromagnetics
… are applied to the calculations of the Casimir force. The application of the integral equation method in Casimir force calculation is briefly reviewed and we proposed an efficient computing scheme using the randomized singular value decomposition and the hybrid FMA. As a result, the …
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The interior Casimir problem
We study the electromagnetic Casimir interaction of a metallic compact object with a compact and bounded metallic surface in which it is contained. We express the interaction energy in terms of the objects' scattering matrices and translation matrices that relate the coordinate systems appropriate …
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Novel applications of Maxwell's equations to quantum and thermal phenomena
… to describe quantum fluctuations, known as Casimir forces, in terms of classical electromagnetism. We prove that chirality in metamaterials can have no appreciable effect on the Casimir force, and design an alternative metamaterial in which the structure can have a strong effect on the …
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An optical approximation to the Casimir effect and related topics
… thesis, I have studied the dependence of the Casimir force between neutral conductors on their shapes. After reducing the problem to that of finding the density of states of' an appropriate hamiltonian I studied it by using semiclassical methods. Some exemplary geometries of interest for the …
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Computational electromagnetics for microstrip and MEMS structures
… an efficient and accurate way to evaluate the Casimir force between arbitrarily-shaped conducting objects in both 2D and 3D geometries will be presented. The Casimir force is the dominant force between charge-neutral objects when the separation is less than a micron. It is important in the …
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Spectral functions for generalized piston configurations.
… on these various configurations, we obtain the Casimir force and the one-loop effective action for these systems as the values at s= -½ and the derivative at s = 0. Information about the heat kernel coefficients can also be found in the spectral zeta function in the form of residues, which …
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Inflationary cosmology and fundamental physics
… topics: oscillons, entanglement entropy, and the Casimir effect. In particular, we compute the quantum decay of oscillons, finding it to be dramatically different to the classical decay; we establish finite contributions to the entanglement entropy between a pair of regions, including a finite …
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Scattering theory approach to electrodynamic Casimir forces
… presentation of methods for calculating the Casimir force to arbitrary accuracy, for any number of objects, arbitrary shapes, susceptibility functions, and separations. The technique is applicable to objects immersed in media other than vacuum, nonzero temperatures, and spatial arrangements …
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Experimental investigations of the role of proximity approximation in near-field radiative transfer
… proximation. In contrast to van der Waals force and Casimir force measurements in which the proximity approximation agree better when applied to larger spheres, in radiative heat transfer measurements, the modified proximity approximation agree better for smaller spheres. This surprising …
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Fluctuation-induced interactions and nonlinear nanophotonics
… theoretical and numerical methods for studying Casimir forces and nonlinear frequency conversion in nanophotonic media consisting of arbitrary geometries and materials. The first section of the thesis focuses on the study of various geometry-enabled resonant effects leading to strong nonlinear …