With easy access to Alexa, premium audio quality, and a host of smart home features, Echo devices can help organize your home, connect with friends and family, and enjoy your favorite types of ...

Abstract: We propose the design of transmissive printed circuit board (PCB) metagratings with few number of meta-atoms to achieve extreme-angle anomalous reflection or refraction under normal ...

The museum's exit is hidden behind a shipment container close to the main staircase. The container should be highlighted when using your scanner—open it and lead Myers through the subway tunnels.

Abstract: A bidirectional multibeam transmit-reflect-array (TRA) antenna has been proposed for the space–air–ground–sea integrated network (SAGSIN). The TRA consists of alternating transmission ...