Dave’s Hot Chicken said Monday it has been acquired by the private equity firm Roark Capital in a deal valued at $1 billion. Dave’s Hot Chicken got its start in 2017 as a popup in a ...

Ever wondered how the doughnut came to be? Its origins date back to Dutch settlers in the eighteenth century, who brought ...

Abstract: This article presents an efficient synthesis method for generating vortex beams based on donut-shaped orbital angular momentum (OAM) metasurfaces. It not only allows one to synthesize the ...

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