If you buy something from a Verge link, Vox Media may earn a commission. See our ethics statement. The pager-sized stainless steel Springlife polarizer looks like not much more than a small metal box.

Fig. 1. Schematic diagram of an on-chip system consisting of multiple functional modules (a) without the cloak and (b) with the designed thermal-electromagnetic cloak, respectively. (a) A central ...