This is a really cool innovation – researchers printed a frequency filter onto a piece of origami, and found a folding technique that allows it to morph from one frequency blocker to another frequency blocker depending on how much you ‘pull out’ or ‘flatten’ the folded origami structure. The result is a portable, light-weight frequency blocker that you can compactly package for deployment in, say, outer space… and adjust the frequencies being blocked after deployment!
And, what’s also cool… the project team published videos with their article! Finally some researchers learned how to make use of multimedia in research publications. Take a look at their video showing which level of folding blocks which frequency!
… and the technical details here: S. Nauroze et al, Continuous-range tunable multilayer frequency-selective surfaces using origami and inkjet printing,