Full-Parameter Omnidirectional Thermal Metadevices of Anisotropic Geometry

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Tiancheng Han
  • Peng Yang
  • Ying Li
  • Baowen Li
  • Kedar Hippalgaonkar
  • Cheng-Wei Qiu

Detail(s)

Original languageEnglish
Article number1804019
Journal / PublicationAdvanced Materials
Volume30
Issue number49
Online published11 Oct 2018
Publication statusPublished - 6 Dec 2018
Externally publishedYes

Abstract

Since the advent of transformation optics and scattering cancelling technology, a plethora of unprecedented metamaterials, especially invisibility cloaks, have been successfully demonstrated in various communities, e.g., optics, acoustics, elastic mechanics, dc electric field, dc magnetic field, and thermotics. A long-held captivation is that transformation-optic metamaterials of anisotropic or noncentrosymmetric geometry (e.g., ellipsoids) commonly come along with parameter approximation/simplification or directional functions. Here, a synthetic paradigm with strictly full parameters and omnidirectionality is reported simultaneously to address this long-held issue for molding heat flow and experimentally demonstrate a series of noncentrosymmetric thermal metadevices. It changes the usual perception that transformation thermotic/dc/acoustic metamaterials are just a direct and simplified derivatives of the transformation-optic counterpart. Instead, the proposed methodology solves an intriguingly important and challenging problem that is not possibly achievable for transformation-optic metamaterials. The approach is rigorous, exact, robust, and yet elegantly facile, which may open a new avenue to manipulating the Laplacian and wave-dynamic fields in ways previously inconceivable.

Research Area(s)

  • cloaked sensors, full-parameter and omni-directionality, invisibility cloaks, super expanders, thermal metadevices of anisotropic geometry

Citation Format(s)

Full-Parameter Omnidirectional Thermal Metadevices of Anisotropic Geometry. / Han, Tiancheng; Yang, Peng; Li, Ying et al.
In: Advanced Materials, Vol. 30, No. 49, 1804019, 06.12.2018.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review