Invisibility cloaks could slim down with active approach
Light-blocking antennas could hide objects of any shape and size
By Gabriel Popkin, 16:26 PM November 21, 2013
A new light-canceling technique could help scientists make thin invisibility cloaks that block a large range of wavelengths.
The new technique is “a smart engineering trick” that is “quite different from the way cloaking has been approached so far,” says Andrea Alù, a physicist at the University of Texas at Austin.
Nearly all invisibility cloaks use light-manipulating compounds called metamaterials to bend light around an object, rendering the object transparent. Such technology has become inc...
Source URL: https://www.sciencenews.org/article/invisibility-cloaks-could-slim-down-active-approach