Fluctuation-Induced Phenomena in Nanoscale Systems: Harnessing the Power of Noise

Reid, M. T. Homer; Rodríguez, Alejandro W.; Johnson, Steven G.

doi:10.1109/jproc.2012.2191749

Cited by 30 publications

(33 citation statements)

References 70 publications

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“…The book by Chew [44] provides an exhaustive discussion, including numerical techniques from computational electrodynamics. Let us simply note that in practice, it is possible to avoid the volume integration in (9) and get instead an integral over the surfaces of the bodies [9,45,46]. (The price to pay is the restriction to spatially constant temperatures inside the bodies.)…”

Section: Field Correlationsmentioning

confidence: 99%

Nanoscale Thermal Transfer – An Invitation to Fluctuation Electrodynamics

Henkel

2016

Zeitschrift Für Naturforschung A

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Section: Field Correlationsmentioning

confidence: 99%

Nanoscale Thermal Transfer – An Invitation to Fluctuation Electrodynamics

Henkel

2016

Zeitschrift Für Naturforschung A

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“…Interest in complex designs is also fueled by our increasing ability to engineer selective and even dynamically tunable emitters and detectors at wavelengths for which there is currently a lack of coherent sources, 12,[45][46][47][48][49] in addition to solar-energy harvesting applications. [50][51][52][53][54][55] In addition to radiation, fluctuations can also mediate heat exchange 6,8,56 and interactions 7,15,21,57,58 (known as Casimir forces) between objects. Unlike heat exchange, Casimir interactions persist even at equilibrium and are known to arise primarily due to contributions of quantum rather than finite-temperature fluctuations.…”

Section: Introductionmentioning

confidence: 99%

Fluctuating volume-current formulation of electromagnetic fluctuations in inhomogeneous media: Incandescence and luminescence in arbitrary geometries

et al. 2015

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We describe a fluctuating volume-current formulation of electromagnetic fluctuations that extends our recent work on heat exchange and Casimir interactions between arbitrarily shaped homogeneous bodies [Phys. Rev. B. 88, 054305] to situations involving incandescence and luminescence problems, including thermal radiation, heat transfer, Casimir forces, spontaneous emission, fluorescence, and Raman scattering, in inhomogeneous media. Unlike previous scattering formulations based on field and/or surface unknowns, our work exploits powerful techniques from the volume-integral equation (VIE) method, in which electromagnetic scattering is described in terms of volumetric, current unknowns throughout the bodies. The resulting trace formulas (boxed equations) involve products of well-studied VIE matrices and describe power and momentum transfer between objects with spatially varying material properties and fluctuation characteristics. We demonstrate that thanks to the low-rank properties of the associated matrices, these formulas are susceptible to fast-trace computations based on iterative methods, making practical calculations tractable. We apply our techniques to study thermal radiation, heat transfer, and fluorescence in complicated geometries, checking our method against established techniques best suited for homogeneous bodies as well as applying it to obtain predictions of radiation from complex bodies with spatially varying permittivities and/or temperature profiles.

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“…Geometries that are considered range from planar structures 1,12,13 to cases where a sphere [14][15][16] , a cone 16 , or a cylinder 16 is placed on top of a planar substrate. There are several reviews that summarize the results of this line of research 17,18 . In addition to a variety of exact numerical techniques, there also exists a set of approximation methods for thermal transfer calculations.…”

Section: Introductionmentioning

confidence: 99%

Effect of shape in near-field thermal transfer for periodic structures

2015

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In this paper, the effect of the geometrical shape on the radiative thermal transfer between a periodic array of beams and a planar substrate is investigated. Specifically, we analyze the changes in the thermal transfer that occur when the cross sectional shape of SiC beams is modified from rectangular to ellipsoidal and finally triangular. Numerical calculations are done based on the rigorous coupled wave analysis. These exact results from this analysis are compared to modified proximity and far-field approximations, which become valid for small and large spacings, respectively. Moreover, these results are also compared to effective medium theory, which becomes increasingly accurate in the limit of small periodicities. We show that a reduction in the periodicity will lead to a reduced thermal transfer for triangular and ellipsoidal shaped beams. Even though, in the limit of very small periodicity, thermal transfer for the case of rectangular shaped beams also decreases by decreasing the periodicity but this decrease is more slowly as compared to other cross sectional shapes. Finally, we show that even though changing periodicity will change the magnitude of thermal transfer, the scaling law for its variation with the beam to substrate spacing is primarily determined by the cross sectional shape rather than the periodicity. We analytically prove this fact by investigating the large and small periodicity regimes. INTRODUCTION:

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Fluctuation-Induced Phenomena in Nanoscale Systems: Harnessing the Power of Noise

Cited by 30 publications

References 70 publications

Nanoscale Thermal Transfer – An Invitation to Fluctuation Electrodynamics

Nanoscale Thermal Transfer – An Invitation to Fluctuation Electrodynamics

Fluctuating volume-current formulation of electromagnetic fluctuations in inhomogeneous media: Incandescence and luminescence in arbitrary geometries

Effect of shape in near-field thermal transfer for periodic structures

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