Invisibility ppt

This document discusses invisibility technology and its possibilities. It begins by defining invisibility as the inability to be seen. While invisibility was previously considered science fiction, scientists have recently created cloaking devices that can render 3D objects invisible using metamaterials. Metamaterials are artificially engineered materials with extraordinary electromagnetic properties that allow controlling light in ways that enable invisibility. Specifically, transformation optics and split ring resonators (SSRs) arranged in crystalline structures can bend and control light to route it around an object, rendering that object invisible within a specific frequency range. Potential applications of invisibility cloaking include rendering military devices, medical imaging tools, and computer chips invisible. However, limitations remain around only achieving invisibility within a narrow