Alok Ghanekar

Publications31
h-index9
Citations207
Highly Influential Citations1
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Role of nanoparticles in wavelength selectivity of multilayered structures in the far-field and near-field regimes.
Microscopic thin films have shown wavelength selectivity in the context of radiative heat transfer. We propose a methodology to shift the wavelength selectivity in the desired location. This work… Expand
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High-rectification near-field thermal diode using phase change periodic nanostructure
We theoretically demonstrate workings of a near-field thermal rectification device that uses a phase change material to achieve asymmetry in radiative heat transfer. We exploit the temperature… Expand
  • 45
Novel and efficient Mie-metamaterial thermal emitter for thermophotovoltaic systems.
We theoretically demonstrate a novel, efficient and cost effective thermal emitter using a Mie-resonance metamaterial for thermophotovoltaic (TPV) applications. We propose for the first time the… Expand
  • 27
Radiative energy and momentum transfer for various spherical shapes: A single sphere, a bubble, a spherical shell, and a coated sphere
We use fluctuational electrodynamics to determine spectral emissivity and van der Waals contribution to surface energy for various spherical shapes, such as a sphere, a bubble, a spherical shell, and… Expand
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Near-field thermal rectification devices using phase change periodic nanostructure.
We theoretically analyze two near-field thermal rectification devices: a radiative thermal diode and a thermal transistor that utilize a phase change material to achieve dynamic control over heat… Expand
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Mie-Metamaterials-Based Thermal Emitter for Near-Field Thermophotovoltaic Systems
In this work, we theoretically analyze the performance characteristics of a near-field thermophotovoltaic system consisting a Mie-metamaterial emitter and GaSb-based photovoltaic cell at separations… Expand
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Dynamic optical response of SU-8 upon UV treatment.
We report the optical properties of SU-8 in the mid-infrared (mid-IR) region before and after UV treatment. Samples consisted of SU-8 films of thickness ranging from 10 um to 157 um deposited on gold… Expand
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Strain-induced modulation of near-field radiative transfer.
In this theoretical study, we present a near-field thermal modulator that exhibits change in radiative heat transfer when subjected to mechanical stress/strain. The device has two terminals at… Expand
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Optimal Design of Wavelength Selective Thermal Emitter for Thermophotovoltaic Applications.
We theoretically and numerically demonstrate optimal design of wavelength selective thermal emitter using one-dimensional (1D) and two-dimensional (2D) metal-dielectric gratings for… Expand
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A Review of Tunable Wavelength Selectivity of Metamaterials in Near-Field and Far-Field Radiative Thermal Transport
Radiative thermal transport of metamaterials has begun to play a significant role in thermal science and has great engineering applications. When the key features of structures become comparable to… Expand
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