Unlocking Optical Illusions: Transforming Perception with Optical Null Media

Sadeghi M. M., Sarısaman M., Rostamzadeh S.

OPTICS AND LASER TECHNOLOGY, vol.176, pp.1-9, 2024 (SCI-Expanded)


Experience the extraordinary as we delve into the realm of transformation optics (TO) and optical null media (ONM). In this groundbreaking study, we unveil an experiment that showcases the remarkable results of an illusion device based on TO theory. By connecting a zero thickness in virtual space to a finite region in physical space, our ONM design defies conventional optical properties where objects appear magnified to the observer. Through the ingenious implementation of radial metal-dielectric structures and effective medium theory (EMT), we successfully fabricated and realized an ONM with air and iron sheets. The illusion effect is thoroughly demonstrated through in-depth analytical proofs, precise numerical simulations and comprehensive experimental validation by inserting a metallic pipe in the Plexiglas core medium surrounded by the ONM. Our results exhibit an unprecedented level of illusion magnification at Fabry–Pérot frequencies, setting a new benchmark in the field. This research bridges the gap between theory and real-world applications, offering a tantalizing glimpse into the transformative potential of optical illusions.