Metamaterials

Researchers at the University of Utah have devised a method to create invisible images embedded within normal-looking images using cheap inkjet printers. The data hidden in these images can then only be revealed using sub-millimeter electromagnetic radiation

Researchers at the University of California San Diego claim to have created the world's first microelectronic device that has no semiconductors, instead employing low-power laser optical control to increase its conductivity by more than 1,000 percent.

The tools to overcome problems with wireless charging already exist, according to a new paper that outlines how an LCD-like panel could be used to charge several devices simultaneously from a distance of up to 33 feet.

​It's one of the basic facts of science: Heat something and it expands. But a team of scientists from LLNL have gone counterintuitive and invented a 3D-printed material that shrinks when heated.

Researchers have developed a lens that operates at terahertz frequencies that are not only simple and inexpensive, but are claimed to produce near-flawless images which could vastly improve biomedical imaging as well as biological and explosive security scanning.

Engineers at Iowa State University may have gotten one step closer to the ability to make objects invisible with the development of what they are calling a flexible, stretchable and tunable meta-skin that can suppress radar detection.

Researchers in France have designed a low-frequency absorption system using metamaterials that is not only many hundreds of times smaller than standard systems, but is also claimed to totally absorb all incoming sound.

KIT scientists have created what they claim is the world's smallest lattice. Formed with struts and braces measuring less than 10 micrometers in length, the 3D lattice has a total size of less than 10 micrometers, but boasts a higher specific strength than most solids.

While MRI scans may not expose patients to the ionizing radiation found in X-rays, they still are potentially harmful. Thanks to new research, however, that may soon no longer be an issue – additionally, scans could be quicker and produce higher-quality images.​

Scientists at UC Berkeley have developed a foldable, incredibly thin invisibility cloak that can wrap around microscopic objects of any shape and make them undetectable in the visible spectrum.

Researchers working at NASA's Jet Propulsion Laboratory (JPL) and the California Institute of Technology (Caltech) have created a flat silicon metamaterial lens that controls the properties of light in ways that normal optical lenses cannot hope to emulate.

Researchers at Duke University have developed a prototype sensor that’s not only able to figure out the direction of a particular sound, but can also extract it from background noise. The disk-shaped device is made of plastic and doesn't have any electronic or moving parts.