December 13, 2012
Microchip Gives Phones X-Ray Vision to detect harmful materials
These tiny inexpensive silicon microchips generate and radiate high-frequency electromagnetic waves, called terahertz (THz) waves, that can penetrate a variety of materials without the ionizing damage of X-rays.
While easily penetrating packaging materials and rendering image details in high resolution, and the THz waves can also detect the chemical fingerprints of pharmaceutical drugs, biological weapons, or illegal drugs or explosives.
Related links fron 2003 through 2009 to articles on chemical sensing capabilities developped for cell phones.
More recently here:
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