Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells
...biocavity laser, detects. A nano-thin layering of gallium aluminum arsenide combinations send up numerous tiny beams from a small cross-sectional generating area. These beams are reinforced or thwarted by the position and density of the mitochondria. "The pictures we get from normal and cancer cells are ve...Tiny avalanche photodiodes target bioterrorism agents
...0 nanometer APDs. These devices, based on aluminum gallium nitride (AlGaN) compound semiconductors, have a photocurrent gain of more than 700. The tiny-sized APDs should be capable of efficient detection of light with near single photon precision. Previously, photomultiplier tubes (PMTs) were the only avail......se to iron-seeking bacteria," said Singh. "Because gallium looks like iron, invading bacteria are tricked, in...nto taking it up. Unfortunately for the bacteria, gallium can't function like iron once it's inside bacterial cells." The researchers showed that gallium ...