Electromagnetic Transparency
Researchers at the Technion have developed technology that grants "electromagnetic transparency" to rigid surfaces. This type of transparency could be used for a wide range of applications, including flat antennas, analog-optical computing devices, and compact imaging systems
Researchers from the Andrew and Erna Viterbi Faculty of Electrical and Computer Engineering have developed an approach that grants rigid surfaces “electromagnetic transparency” that is maintained for any angle of wave incidence on the surface. Prof. Ariel Epstein and doctoral student Amit Shaham conducted the research, which was recently published in the journal Advanced Optical Materials.
The innovative technology is based on an electromagnetic principle called the Generalized Huygens’ Condition, which enables the creation of advanced metasurfaces that maintain electromagnetic transparency at any angle. This omnidirectional transparency manifests at the level of the engineered unit cell (meta-atom) and the entire surface (metasurface).
Prof. Ariel Epstein
Existing metasurfaces suffer from numerous limitations when waves hit them from wide angles, and the new approach addresses this issue. This breakthrough and its implications could be used in many different technologies, including flat antennas, optical devices for analog image processing, thin mirrors and lenses, and compact imaging systems.
Amit Shaham
The research and its derivatives were presented this year by Amit Shaham at major conferences in the field. At the European Conference on Antennas and Propagation held in Glasgow (EuCAP 2024), the conference’s judging committee awarded him the Best Paper in Electromagnetics. At another conference (hosted by IEEE) held in Florence (IEEE APS/URS 2024), he won second place in the student paper competition.
For the full paper: click here