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ScienceDaily: Computers & Math News |
STEM students learn as well online as in classrooms Posted: 08 Apr 2020 03:47 PM PDT Students learned just as much in online STEM college courses as they did in traditional classroom settings, and at a fraction of the cost, according to a first-of-its-kind study. |
Harnessing the power of electricity-producing bacteria for programmable 'biohybrids' Posted: 08 Apr 2020 08:32 AM PDT Someday, microbial cyborgs -- bacteria combined with electronic devices -- could be useful in fuel cells, biosensors and bioreactors. But first, scientists need to develop materials that not only nurture the microbes, but also efficiently and controllably harvest the electricity or other resources they make. Now, researchers have developed one such material that enabled them to create a programmable 'biohybrid' system that conducts electrons from electricity-producing (exoelectrogenic) bacteria. |
New 'refrigerator' super-cools molecules to nanokelvin temperatures Posted: 08 Apr 2020 08:32 AM PDT Physicists have found a way to cool molecules of sodium lithium down to 200 billionths of a Kelvin, just a hair above absolute zero. They did so by applying a technique called collisional cooling, in which they immersed molecules of cold sodium lithium in a cloud of even colder sodium atoms. The ultracold atoms acted as a refrigerant to cool the molecules even further. |
Revolutionary light-emitting silicon Posted: 08 Apr 2020 08:32 AM PDT Emitting light from silicon has been the 'Holy Grail' in the microelectronics industry for decades. Solving this puzzle would revolutionize computing, as chips will become faster than ever. Researchers have now succeeded: they have developed an alloy with silicon that can emit light. The team will now start creating a silicon laser to be integrated into current chips. |
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