Science
Related: About this forumA New Tool for Secret Agents—And the Rest of Us
A secret agent is racing against time. He knows a bomb is nearby. He rounds a corner, spots a pile of suspicious boxes in the alleyway, and pulls out his cell phone. As he scans it over the packages, their contents appear onscreen. In the nick of time, his handy smartphone application reveals an explosive device, and the agent saves the day.
Sound far-fetched? In fact it is a real possibility, thanks to tiny inexpensive silicon microchips developed by a pair of electrical engineers at the California Institute of Technology (Caltech). The chips generate and radiate high-frequency electromagnetic waves, called terahertz (THz) waves, that fall into a largely untapped region of the electromagnetic spectrumbetween microwaves and far-infrared radiationand that can penetrate a host of materials without the ionizing damage of X-rays.
When incorporated into handheld devices, the new microchips could enable a broad range of applications in fields ranging from homeland security to wireless communications to health care, and even touchless gaming. In the future, the technology may lead to noninvasive cancer diagnosis, among other applications.
"Using the same low-cost, integrated-circuit technology that's used to make the microchips found in our cell phones and notepads today, we have made a silicon chip that can operate at nearly 300 times their speed," says Ali Hajimiri, the Thomas G. Myers Professor of Electrical Engineering at Caltech. "These chips will enable a new generation of extremely versatile sensors."
More at: http://www.caltech.edu/content/new-tool-secret-agents-and-rest-us
This strikes me as a very interesting technology.
darkangel218
(13,985 posts)They too operate on a completely different frequency, so its doable.
Speck Tater
(10,618 posts)I always wondered how they did that on Star Trek. Now we know.
Sancho
(9,072 posts)NBachers
(17,203 posts)Fumesucker
(45,851 posts)littlemissmartypants
(22,920 posts)detect liars?