5G uygulamaları ve termal radyasyon yonetımı ıcın metamalzeme tabanlı nanoyapı tasarımı

The properties of natural materials can be the only limiting factor in today's technologies. For this, researchers in the last decades found that engineering the features of naturally occurring materials in the subwavelength scales can drastically change their properties. These materials beyond the natural ones are called "metamaterials", where "meta" means "beyond" in Greek. Although the fabrication of these materials can be quite challenging, clever designs and exploitation of physical phenomena can lead to tunable responses, eliminating the need for multiple structures. Here, different strategies for designing tunable meta-surfaces for a wide range of applications will be presented by giving two examples. These applications are namely: 1. Graphene-based Metasurface Absorber for the Active and Broadband Manipulation of Terahertz Radiation, 2. Adaptive Thermally Tunable Radiative Cooling with Angle Insensitivity Using Phase-Change Material-Based Metasurface.