1. Experimental evaluation of 3D printed spiral phase plates for enabling an orbital angular momentum multiplexed radio system. Issue 12 (11th December 2019) Authors: Allen, B.; Pelham, T.; Wu, Y.; Drysdale, T.; Isakov, D.; Gamlath, C.; Stevens, C. J.; Hilton, G.; Beach, M. A.; Grant, P. S. Journal: Royal Society open science Issue: Volume 6:Issue 12(2019) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗