Not that too many people will notice, but this will be very important in the next 5 - 10 years. Hand held terahertz instruments which are frequency agile can do the kinds of things you heard about on Star Trek, scan for chemicals, identify things that are unknown, see bombs in boxes, show insects in walls, show bedbugs, etc etc.
The reason is because of the interesting place where tHz waves sit in the spectrum, between what we think of as radio and light.
The reason is because of the interesting place where tHz waves sit in the spectrum, between what we think of as radio and light.