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Domain: sciencentral.com
Stories and comments across the archive that link to sciencentral.com.
Stories · 5
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Capacitors to Replace Batteries?
An anonymous reader writes "MIT's Joel Schindall plans to use old technology in a new way with nanotubes. 'We made the connection that perhaps we could take an old product, a capacitor, and use a new technology, nanotechnology, to make that old product in a new way.' Capacitors contain energy as an electric field of charged particles created by two metal electrodes, and capacitors charge faster and last longer than normal batteries, but the problem is that storage capacity is proportional to the surface area of the battery's electrodes. MIT researchers solved this by covering the electrodes with millions of nanotubes. 'It's better for the environment, because it allows the user to not worry about replacing his battery,' he says. 'It can be discharged and charged hundreds of thousands of times, essentially lasting longer than the life of the equipment with which it is associated.'" -
Alcohol Powered Muscles
ianchaos writes "In an article on ScienCentral News, Scientists at the University of Texas are using alcohol to power artificial muscles. From the article: 'Usually the only alcohol-powered muscles are the ones in barroom brawls, but one scientist is adding alcohol to artificial muscles to power robots and more.'" -
Shrimp Bandages Clot Blood Faster
dwbryson writes "A new bandage technology uses ground up shrimp shells to instantly clot blood when applied to an open wound. These new bandages were developed and are being produced exclusively for the military (at $100 for a 4x4" square), but the company who makes them is hoping to mass market them to general consumers." -
Shrimp-Based Bandages Save Lives
Roland Piquepaille writes "Unstoppable bleeding is one of the leading causes of death on battlefields. But now, soldiers in Iraq and Afghanistan have a way to reduce bleeding when they're wounded. In "War Bandages," ScienCentral News writes that these new bandages contain chitosan molecules, extracted from shrimp shells. These positively charged chitosan molecules attract negatively charged red blood cells, stopping hemorrhage in one to five minutes. As said one of the co-founders of the Oregon-based company behind these bandages, "You can have a hole in your heart and 60 seconds later it's sealed." The Food and Drug Administration approved these bandages for human usage, but today they are exclusively sold to the Army. With a $90 price tag for a 4-inch-by-4-inch single bandage, would you buy them anyway? This overview contains more details and references. It also shows you how the red blood cells are attracted by the chitosan molecules." -
Some Prions May Be Helpful
An anonymous reader writes "Sciencentral has an article saying that many prions, far from causing Creutzfeldt-Jakob Disease are actually responsible for long-term memory storage."