Near-field radiative heat transfer in hyperbolic materials

Abstract In the post-Moore era, as energy consumption of micro-nano electronic devices rapidly increases, near-field radiative heat transfer (NFRHT) with super-Planckian phenomena has gradually shown great potential for applications in efficient and ultrafast thermal modulation conversion. Recently, hyperbolic materials, an important class anisotropic materials isofrequency contours, have been intensively investigated. As exotic optical platform, bring tremendous new opportunities NFRHT from theoretical advances to experimental designs. To date, there considerable achievements which range establishment different unprecedented transport various applications. This review concisely introduces basic physics lays out methods address highlights unique behaviors realized resulting Finally, key challenges terms fundamental physics, validations, are outlined discussed.