Diffusion and wave propagation are both fundamental transport mechanisms, but they have
intrinsically different dynamics, governing equations, and applications. Over the past …

Diffusion driven by temperature or concentration gradients is a fundamental mechanism of
energy and mass transport that inherently differs from wave propagation in both physical …

Multispectral camouflage technologies, especially in the most frequently-used visible and
infrared (VIS-IR) bands, are in increasing demand for the ever-growing multispectral …

Thermal metamaterials provide rich control of heat transport which is becoming the
foundation of cutting-edge applications ranging from chip cooling to biomedical. However …

Convective thermal metamaterials are artificial structures where convection dominates in the
thermal process. Due to the field coupling between velocity and temperature, convection …

Exceptional point (EP) has been captivated as a concept of interpreting eigenvalue
degeneracy and eigenstate exchange in non-Hermitian physics. The chirality in the vicinity …

The quantized bulk quadrupole moment has so far revealed a non-trivial boundary state with
lower-dimensional topological edge states and in-gap zero-dimensional corner modes. In …

The tight-binding method is an effective way to study topological insulators. However, an
intrinsic element, ie, the acoustic sum rule (ASR) in phonon systems, has often been …

Many unusual wave phenomena in artificial structures are governed by their topological
properties. However, the topology of diffusion remains almost unexplored. One reason is …

Thermal nonreciprocity typically stems from nonlinearity or spatiotemporal variation of
parameters. However, constrained by the inherent temperature‐dependent properties and …