This week on Txchnologist, we watched MIT engineers move tiny metallic hairs using magnetic fields. The microhairs are made out of nickel mounted on stretchy silicone. Potential applications for the hairs include tunable waterproof coating, anti-glare applications and smart window coating that can control sun allowed into buildings.
Australian National University researchers manipulated wave frequencies and amplitudes to control the movement of particles on the surface of water. The researchers discovered ways to move objects against the direction of a wave. This research could help contain oil spills and even move small boats.
Japanese chemist Yosuke Okamura and his team have created a flexible, sticky coating called nanosheets that is similar to plastic wrap and, when applied to burns, creates a barrier against potentially fatal bacterial infections. The nanosheets can stick without adhesive and are made with a biodegradable polyester called poly(L-lactic acid), or PLLA.
Finally, using nanoscopic pillars of a polyurethane and adhesive mix, researchers at the University of Michigan have created a watermark only visible when a person breathes on it. Soon we’ll be fighting counterfeiting one breath at a time.
Now we’re bringing you the news we’ve been following this week in the world of science, technology and innovation.