Jiping Huang

TL;DR: In this paper, the authors exploit a class of shaped graded materials in which thermal energy is apparently controlled to transfer from a region of lower temperature to a higher temperature, which is indicative of an apparent negative thermal conductivity.

TL;DR: The results suggest that the temperature-dependent transformation thermotics could be a fundamental theoretical method for achieving macroscopic heat rectification and it could provide guidance both for the Macroscopic control of heat flow and for the design of the counterparts of switchable thermal cloaks or macroscopy thermal diodes in other fields like seismology, acoustics, electromagnetics, and matter waves.

TL;DR: In this paper, the authors review recent theoretical progress in understanding physical processes of composite effects on enhanced third-order nonlinear optical responses of various kinds of the recently proposed non-linear optical materials, namely, colloidal nanocrystals with inhomogeneous metallodielectric particles or a graded-index host, metallic films with inhmogeneous microstructures adjusted by ion doping or temperature gradient, composites with compositional gradation or graded particles.

TL;DR: In this paper, the authors theoretically explore a type of bifunctional cloak possessing both electrical and thermal cloaking functionality and employ a composite material to design the cloak shell, which should meet the perfect conductivity profile calculated from the coordinate transformation approach.

TL;DR: It is numerically demonstrated that optical negative refraction in ferrofluids containing isotropic Fe3O4 nanoparticles, each having an isotropics Ag shell, in the presence of an external dc magnetic field H, arises from H-induced chains or columns.