Develops Hierarchical Metamaterial For Multispectral Camouflage

Professor Hyung Hee Cho in School of Mechanical Engineering and his research team have developed the world’s first hierarchical metamaterial for integrated infrared and radar camouflage. Camouflage technology is a state-of-the-art technology that enhances national defense by protecting its military assets from detection systems. Since the detection system detects the wavelength of a specific band, camouflage technology has been developed as to deceive the detection system by adjusting the optical and thermal characteristics of surfaces. However, it is difficult to control radar and infrared waves at the same time. This is because the scale difference of surface for radar and infrared camouflage was more than 1000 times. However, Professor Cho mediated the IR selective emitter for IR camouflage with a microwave selective absorber for radar camouflage through a high-frequency filter.

The results of the research were published in March 2019 as the cover article of Advanced Functional Materials with the title “Hierarchical Metamaterials for Multispectral Camouflage of Infrared and Microwaves” and US and Korea patent with the title “Composite Structure for Controlling Absorptivity of Radar And Emissivity of Infrared Regions” have been registered.