Abstract: We propose and demonstrate a transmissive ultra-dense optical vortex mode sorter via inversely-designed reconstruction improved by spiral coordinate transformation, of which structure ...

Abstract: In the radio-frequency and microwave domains, waves carrying an orbital angular momentum (OAM, vortex waves) are used to improve the performance of wireless communications systems, where OAM ...

Police said the woman called police after they released the footage. Police in Kansas said a woman seen on home surveillance footage in a "possible abduction" has been found safe. The incident ...

A woman praised the "absolute heroes" who "worked tirelessly" to find her lost engagement and wedding rings which were accidentally thrown out in a bin bag when she was decluttering her home. Katie ...

With each new spacecraft launched, the risk of orbital collisions grows. Hundreds of satellites may soon be flying in orbital regions that are already too packed to allow safe and long-term operations ...

Kochi: A substantial quantity of gold — approximately 475.9g — was handed over to "sponsor" Unnikrishnan Potti by Chennai-based firm Smart Creations in 2019 after completing gold-plating works on ...