Scientists at MIT have demonstrated the first laser that operates using the germanium element in a move that could bring us closer to optical computing.
Scientists at MIT have demonstrated the first laser that operates using the germanium element in a move that could bring us closer to optical computing. "The laser, which operates at room temperature, could prove to be an important step toward computer chips that move data using light instead of electricity, say the researchers. 'This is a very important breakthrough, one I would say that has the highest possible significance in the field,' says Eli Yablonovitch, a professor in the electrical engineering and computer science department of the University of California, Berkeley who was not involved in the research told Wired.com. 'It will greatly reduce the cost of communications and make for faster chips.' Even as processors become more powerful, they’re running into a communications barrier: Just moving data between different parts of the chip takes too long. Also, higher bandwidth connections are needed to send data to memory. Traditional copper connections are becoming impractical because they consume too much power to transport data at the increasingly higher rates needed by next-generation chips. Copper also generates excessive heat, and that imposes other design limits because engineers need to find ways of dissipating the heat.Transmitting data with lasers, which can concentrate light into a narrow, powerful beam, could be a cheaper and more power efficient alternative. The idea, known as photonic computing, has become one of the hottest areas of computer research."
It's a development that could one day lead to much better treatments for osteoporosis, joint damage, and bone fractures.
- Scientists have isolated skeletal stem cells in adult and fetal bones for the first time.
- These cells could one day help treat damaged bone and cartilage.
- The team was able to grow skeletal stem cells from cells found within liposuctioned fat.
Gut bacteria play an important role in how you feel and think and how well your body fights off disease. New research shows that exercise can give your gut bacteria a boost.
- Two studies from the University of Illinois show that gut bacteria can be changed by exercise alone.
- Our understanding of how gut bacteria impacts our overall health is an emerging field, and this research sheds light on the many different ways exercise affects your body.
- Exercising to improve your gut bacteria will prevent diseases and encourage brain health.
A groundbreaking new study shows that octopuses seemed to exhibit uncharacteristically social behavior when given MDMA, the psychedelic drug commonly known as ecstasy.
- Octopuses, like humans, have genes that seem to code for serotonin transporters.
- Scientists gave MDMA to octopuses to see whether those genes translated into a binding site for serotonin, which regulates emotions and behavior in humans
- Octopuses, which are typically asocial creatures, seem to get friendlier while on MDMA, suggesting humans have more in common with the strange invertebrates than previously thought
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