Phys.org August 14, 2019
Two teams of researchers (China, USA – Duke University, South Korea) created passive cloaks using different techniques. Both of them have possible real-world applications. One team created cloak by enclosing an object within a ring of 523 specially designed small pillars—the arrangement of the pillars deflected incoming fluid flow, resulting in zero drag on the object that was hidden. This method could possibly be used to reduce drag on ships or other watercraft. The second approach, based on waveguide cloaks, consisted of installing long, thin iron platforms on the bottom of a tank in its corners. The platforms steered the waves around an object in the center of a tank. This kind of cloak could be used to mitigate wave damage to ships in port…read more. TECHNICAL ARTICLE 1 , 2
Credit: J. Park et al., Phys. Rev. Lett. (2019)