Language Selection

English French German Italian Portuguese Spanish

Useful cloaking device is one step closer to reality

Filed under
Sci/Tech

Last October saw a major breakthrough in an area of research that, until very recently, was squarely in the realm of science fiction—cloaking technology.

An article published in Science by a team of researchers at Duke University discussed how they had created a device that was able to cloak simple objects from microwave radiation.

While this was a stunning announcement, it wasn't what many Trekkies would think of off the top of their head. The Duke team used metamaterials—synthetic materials whose physical structure interacts with electromagnetic (EM) waves in ways that natural materials do not—to essentially guide microwave radiation at a given frequency around a cavity that held the object. If one looked at it, they would still clearly see the entire setup as microwaves have a much longer wavelength than visible light. Another shortcoming was that while the cloak kept the material invisible from outside viewing, it did nothing to keep EM radiation originating from inside the cavity from getting out. This means that anything emitting EM radiation—heat from a person's body, RF signals from a cell phone/radio, or even a simple flashlight—would be instantly detectable. Now, some new mathematics suggests a way one can get around this issue.

Full Story.

More in Tux Machines

LibreOffice 5.1 Officially Released with Redesigned User Interface, New Features

Today, February 10, The Document Foundation non-profit organization has proudly announced the release and immediate availability for download of the LibreOffice 5.1 open-source and cross-platform office suite for all supported platforms. Read more Also: LibreOffice 5.1: The premier open-source office suite just keeps getting better LibreOffice 5.1 Officially Released As The Best Open-Source Office Suite

Ubuntu 16.04 LTS Is Now Using the Latest Linux Kernel 4.4.1

The Ubuntu kernel team has upgraded the Linux kernel for Ubuntu 16.04 LTS (Xenial Xerus) to version 4.4.1 and is also tracking future updates for this branch. Read more

Putin's New Internet Czar Wants Apple and Google to Pay More Taxes

Microsoft, Google and other U.S. companies “reached the point of no return” when they complied with sanctions over Putin’s annexation of Crimea by halting all business with the peninsula, according to Klimenko. As a result, it’s “inevitable” Russia will switch state networks from Windows to an open-source system based on Linux, a move 22,000 municipal governments are prepared to make immediately, he said. Read more