Perfect absorption based on a ceramic anapole metamaterial

Metamaterials, from concept to application level, is currently a high-trending topic. Due to the strict requirements of the simultaneous reasonable structural design and stability of materials, the construction of a high-performance metamaterial for extreme environments is still difficult. Here, combining metamaterial design with materials optimization, we propose a completely different strategy and synthesize a type of monomeric ceramic meta-atom to construct metamaterials. Based on a geometric design with multiple degrees of freedom and dielectric properties, hybrid anapole modes with impedance matching can be produced, experimentally inducing nearly perfect absorption with high temperature stability (high tolerable temperature of approximately 1300 degrees C, with almost zero temperature drift) in microwave/millimeter-wave bands. We surpass the oxidation temperature limitation of 800 degrees C in conventional plasmonic absorbers, and provide an unprecedented direction for the further development of integrated high-performance metamaterial wireless sensors responding to extreme environmental scenarios, which will also lead to a new direction of specific ceramic research toward device physics.

Automated summary

We propose a new strategy for constructing high-performance metamaterials in extreme environments by combining metamaterial design with materials optimization. By utilizing a monomeric ceramic meta-atom, we are able to achieve nearly perfect absorption with high temperature stability in the microwave/millimeter-wave bands. This breakthrough surpasses the temperature limitation of conventional plasmonic absorbers and opens up new possibilities for the development of integrated high-performance metamaterial wireless sensors.