Near-field Radiative Heat Transfer with Hyperbolic Metamaterials

Download or read book Near-field Radiative Heat Transfer with Hyperbolic Metamaterials written by Slawa Lang and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite its general significance, Max Planck's blackbody theory cannot explain the increase in radiative heat flux between closely spaced bodies, known as near-field radiative heat transfer. We experimentally demonstrate this effect by utilizing a new, dynamic measuring technique and show heat fluxes up to 16 times above the blackbody limit. We also reveal that thermal radiation inside hyperbolic metamaterials (HMMs) - extremely anisotropic nanostructures - is very strong and has properties significantly different from blackbody radiation. Finally, near-field heat flux between HMMs turns out to be very strong and its penetration into the HMMs is comparatively large.