Active Thermal Metasurfaces Enable Superscattering of Thermal Signatures Across Arbitrary Shapes and Thermal Conductivities.

ABSTRACT: The concept of superscattering is extended to the thermal field through the design of a thermal superscatterer based on transformation thermotics. A small thermal scatterer of arbitrary shape and conductivity is encapsulated within an engineered negative-conductivity shell, forming a composite that mimics the scattering signature of a significantly larger scatterer. Crucially, the enlarged thermal scattering signature substantially exceeds that of the original small scatterer and engineered shell combined, demonstrating more than mere cross-section amplification-an effect referred to as thermal superscattering. The amplified signature can match either a conformal larger scatterer (preserving conductivity) or a geometry-transformed one (modified conductivity). The implementation employs a p

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12915085 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature