Iranian researchers develop new method for high-resolution lens production

Researchers in the Sharif University of Technology have developed a method to reduce analysis time for graphene-based multilayer periodic structures.
The method would help researchers to build high-resolution optical sensors and lenses. Grafene is a structure in atomic size (few nanometers) which has unique electronic and optical features. Its main feature with applications in these structures is surface plasmon-polariton guiding especially in terahertz frequencies.

Researchers in the Sharif University of Technology developed a method for quick analysis of periodic array of graphene ribbons. Analysis of such ribbons is based on methods with capability to reduce the time of analysis to fraction of seconds.

They succeeded in developing a method to address the issue. They proposed using approximate boundary conditions instead of using boundary condition for tangential component of magnetic field, which made possible inverse Fourier expansion of surface conductivity function.

Periodic array of graphene ribbons could find applications in developing different optical devices such as optical sensors, light absorbent, lenses with super-resolution beyond the diffraction limit, and terahertz metamaterials.