Researchers have made a significant advance in on-chip systems protection, revealing a novel approach for simultaneous thermal and electromagnetic shielding. Detailed in a recent publication in Opto-Electronic Science, this groundbreaking method utilizes a multi-physical null medium for dual cloaking purposes. The integration of electronic systems, particularly those on a microchip, necessitates precise control over heat and electromagnetic fields to prevent damage to sensitive components and ensure efficient operation. The challenge of maintaining electromagnetic compatibility while effectively dissipating heat in densely packed chips has prompted the search for solutions that can address both issues concurrently.
Current methodologies and materials fall short in simultaneously managing thermal and electromagnetic disturbances within the compact confines of on-chip systems. The newly proposed thermal-electromagnetic null medium marks a pivotal advancement, acting as an 'endoscope' that invisibly guides both electromagnetic waves and thermal energy. This is achieved through the innovative use of transformation optics and a meticulous surface-designing process that follows a set of black-box designing steps.
The practical application of this theory involves a composite of staggered copper and expanded polystyrene, leading to the creation of a dual-function cloak. This cloak is capable of shielding sensitive on-chip components from external heat while preserving the integrity of electromagnetic radiation patterns.
This research introduces a comprehensive graphical design framework for thermal-electromagnetic surface transformation. This framework enables the design of devices that can control the flow of both electromagnetic waves and thermal energy, offering solutions like splitters, benders, converters, multiplexers, and cloaks. The thermal-electromagnetic cloak, in particular, has been proven through simulations and real-world experiments to effectively reroute both heat and electromagnetic waves around protected areas, ensuring both electromagnetic compatibility and efficient heat management in tightly integrated systems.
Significantly, the cloak exhibits exceptional broadband effectiveness, efficiently operating across a range from 6GHz to 10GHz. This innovation paves the way for more resilient and efficient electronic and photonic on-chip systems, offering a robust response to the thermal and electromagnetic challenges posed by high levels of integration.
Research Report:Simultaneously realizing thermal and electromagnetic cloaking by multi-physical null medium
