Microwave absorption on a thin film
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TLDR
In this paper, it was shown that a thin film of contaminant on a microwave window may absorb up to 50% of the incident power, even if the film thickness is only a small fraction of its resistive skin depth.Abstract:
With the use of a simple model, it is shown that a thin film of contaminant on a microwave window may absorb up to 50% of the incident power, even if the film thickness is only a small fraction of its resistive skin depth. This unexpectedly large amount of absorption is conjectured to have played a significant role in window failure. The temperature rise in a thin film is estimated.read more
Citations
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Journal ArticleDOI
Ultra-thin perfect absorber employing a tunable phase change material
Mikhail A. Kats,Deepika Sharma,Jiao Lin,Patrice Genevet,Romain Blanchard,Zheng Yang,M. Mumtaz Qazilbash,Dimitri Basov,Shriram Ramanathan,Federico Capasso +9 more
TL;DR: In this paper, the authors show that perfect absorption can be achieved in a system comprising a single lossy dielectric layer of thickness much smaller than the incident wavelength on an opaque substrate by utilizing the nontrivial phase shifts at interfaces between lossy media.
Journal ArticleDOI
Graphene-enabled electrically switchable radar-absorbing surfaces
TL;DR: Large-area adaptive radar-absorbing surfaces with tunable reflection suppression ratio up to 50 dB with operation voltages <5 V are reported, providing a significant step in realization of active camouflage systems in microwave frequencies.
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Graphene-enabled electrically switchable radar absorbing surfaces
TL;DR: In this paper, the authors demonstrate large-area adaptive radar-absorbing surfaces with tunable reflection suppression ratio up to 50 dB with operation voltages <5 V. The results provide a significant step in realization of active camouflage systems in microwave frequencies.
Journal ArticleDOI
Microwave absorption properties of the ZnO nanowire-polyester composites
TL;DR: In this article, the microwave response properties of the ZnO nanowire-polyester composites fabricated into a planar plate with the area of 180×180 mm2 and the thickness of about 1 mm.
Journal ArticleDOI
Optical absorbers based on strong interference in ultra-thin films
Mikhail A. Kats,Federico Capasso +1 more
TL;DR: In this article, the authors summarize recent progress in the development of optical absorbers based on lossy films with thicknesses significantly smaller than the incident optical wavelength, and outline the theoretical foundation of these absorbers, including the concepts of loss-induced phase shifts and critical coupling.
References
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TL;DR: In this paper, a single-surface multipactor discharge on a dielectric, such as an rf window, was investigated using a Monte Carlo simulation, and the susceptibility diagram, applicable to a wide range of materials, in terms of the rf electric field and of the dc electric field, was constructed.
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Initiation of high power microwave dielectric interface breakdown
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