Blast of Sound Turns Liquid to Jelly

It’s a technology that could one day aid buildings to survive earthquakes or hurricanes. It could be used to remotely control the viscosity of liquid shock absorbers in cars, or the lubricants in robotic joints. Japanese researchers have devised a way to turn a range of oily liquid solutions to jelly using a burst of sound waves. The jelly can then be shocked back into becoming a liquid. Until now, there had been no method to achieve instant, remote and reversible control between stable liquid and gel phases at ambient temperatures