Memristive Thermal Radiator by Highly Tunable Graphene Plasmon

Abstract

The dynamic regulation of thermal radiation in the mid‐infrared region is technologically important in diverse applications such as thermal management and camouflage. However, there is a notable lack of research on the combination of infrared radiators and memristors, which can maintain previous states or modes without extra power consumption. Here, a memristive mid‐infrared radiator, where graphene nanoribbon grating serves simultaneously as a floating gate for charge storage and a tunable infrared nanoantenna for thermal radiation is proposed. This design enables precise and fast modulation, low power consumption, and scalability. Even a small change of one attocoulomb in the stored charge can produce a 1‐µm peak shift in the absorption peak. This work provides a platform for a memristive infrared thermal radiator that can be further exploited for electrochromic glazing or on‐chip radiative cooling.