Ceramic-based dielectric metamaterials

Dielectric metamaterials based on ceramics have attracted considerable in-terest in the past few years owing to their low dielectric loss,simple structure,excellent multifield tunability,and good environmental adaptability.They are considered to be promising alternative to metal-based metamaterials and can lead to a new strategy for the development of passive devices.In this review,the recent progress of ceramic-based dielectric metamaterials in electro-magnetic applications,energy applications,non-Hermitian systems,and natural materials with near-zero or negative refraction are summarized.The design principle and mechanism,as well as manufacturing technologies,are also introduced,and the current development trend of ceramic-based dielectric metamaterials are proposed.