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Light damages microcircuits

18.02.2007

Japanese physicists have discovered that the light of fluorescent lamps causes the formation of defects on the surface of silicon microcircuits. When a silicon wafer is immersed in chemically pure water or microchip etching chemicals, light creates microscopic pits on the smooth surface that can disrupt the operation of today's densely packed circuit components.

It may be necessary for electronics factories to replace fluorescent lamps with conventional incandescent lamps.

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A team of scientists from the University of Washington has developed an original mission to search for life on Mars. Scientists want to send several small spacecraft to the Red Planet, which will fall on the surface of Mars in various regions and conduct a series of tests to look for signs of life.

Scientists have already sent their developments to NASA, called the BOLD (Biological Oxidant and Life Detection) mission. During the mission, six 60-kg inverted pyramid-shaped probes will be dropped from Mars orbit and land on its surface. After that, the onboard equipment of the probes will conduct a dozen and a half experiments and transmit data to the orbiter. The probes will measure soil moisture and acidity, the amount of inorganic ions, as well as the concentration of hydrogen peroxide - in accordance with the Schulze-Makush hypothesis, which suggests that Martian microorganisms may be composed of a mixture of water and hydrogen peroxide. In addition, each probe will be equipped with a simple microscope to search for life forms similar to ancient terrestrial fossil microfossil microorganisms. One of the tools will look for long molecules similar to nucleic acids. Some experiments will replicate the operation of the Viking apparatus, but with greater accuracy.

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