You may not be able to see ’em with your eyes, but in the space between infrared light and microwaves is an invisible stretch of the electromagnetic spectrum where neither electronics nor optical devices can manipulate energy. The cool thing about terahertz waves, though, is that they’re a lot like X-rays: You can use ’em to see through certain solid materials, but without the “oh dear, now I’m dead” side-effect of high doses of X-ray radiation. Researchers from the Terahertz Integrated Electronics Group at MIT, led by Associate Professor Ruonan Han, are trying to tap into this space. Fresh off the lab bench at MIT is an electronically steerable terahertz antenna array …
