Real invisibility threads would be fit for an emperor

 作者:仪卤     |      日期:2018-01-26 03:01:00
By Jeff Hecht FORGET the imaginary filaments used to weave the clothes that fooled the fabled emperor, can we make real invisible threads instead? Combining techniques used to produce light-bending metamaterials with those used to make optical fibres might just do the trick. Alessandro Tuniz at the University of Sydney’s Institute of Photonics and Optical Science in Australia is one of many physicists interested in the optical metamaterials that are being fashioned into “invisibility cloaks” in labs across the world. These metamaterials incorporate components much smaller than the wavelength of light,