Abstract: Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of ...

Actor Billy Crystal might be known forever to many as Harry from the 1989 film When Harry Met Sally, but to Jennifer Crystal Foley and Lindsay Crystal, he’s always been Dad. Billy and his wife Janice ...

Time crystals, a collection of particles that "tick"—or move back and forth in repeating cycles—were first theorized and then discovered about a decade ago. While scientists have yet to create ...