Orbital angular momentum (OAM) has aroused a widespread interest in many fields,
especially in telecommunications due to its potential for unleashing new capacity in the …

In this paper, we review the generation of vortex beams carrying orbital angular momentum
in the microwave domain. We firstly present the theory of Laguerre–Gaussian beams where …

In this paper, an electromagnetic metasurface is designed, fabricated, and experimentally
demonstrated to generate multiple orbital angular momentum (OAM) vortex beams in radio …

Vortex beams carrying orbital angular momentum (OAM) are extensively studied owing to its
potential to expand channel capacity of microwave and optical communication. By utilizing …

In this paper, a Janus metastructure (JMS) is proposed that can act both as a logic gate and
detect multiple physical quantities. By adjusting the incident angle of electromagnetic waves …

Electromagnetic (EM) waves with helical wave front carry orbital angular momentum (OAM),
which is associated with the azimuthal phase of the complex electric field. OAM is a new …

We present a comprehensive review on the geometric-phase based metasurfaces for orbital
angular momentum (OAM) generation and detection. These metasurfaces manipulate the …

We present a generic approach for the generation of pseudo non-diffracting Bessel beams
using polarization insensitive metasurfaces with high efficiency. Cascaded unit cells, which …

Origami is the art of paper folding that allows a single flat piece of paper to assume different
3D shapes depending on the fold patterns and the sequence of folding. Using the principles …

Metasurfaces, orbital angular momenta (OAM), and non-diffractive Bessel beams have been
attracting worldwide research. Combining the benefits of these three promising techniques …