Present composite dental fillings used by dentists are not eternal, and as Professor Jamie Kruzic of the University of Oregon says, some of them may stop fulfilling their task after six years. That is why, with his team, he is working on a completely new material that is called bioactive glass.
Currently, composites used by dentists as fillings fill holes in our teeth are made of a mixture of polymers and inert glass fillers. They are composed of compounds such as phosphorus oxide, silicon oxide and calcium oxide, which repel bacteria that cause tooth decay. Specifically speaking, calcium and phosphate released ions are toxic to them.
The problem is that bacteria can put the colon in the gaps between the filling and the tooth, causing the tooth to break from the inside. That is why researchers have developed special, bioactive glass that, as demonstrated by laboratory tests, is much more resistant to such action.
Researchers at the University of Michigan are working on a new drive that will allow us, in a fraction of the current cost, to be orbited to Earth or small satellites.
Engineers are working on a project called CAT (CubeSat Ambipolar Thruster), which aims to construct small, solar-powered CubeSat propulsion blocks that can move objects into orbit.
The new technology would significantly reduce the cost of launching satellites compared to the current heavy and heavy rocket method. Scientists expect their invention, in the future, will significantly speed up the space exploration process, enabling satellites to be sent to Saturn and Jupiter.
However, to complete their project, they need at least $ 200,000, so they decided to raise funds through Kickstarter. If they manage to gather needed resources, they may be able to send a new prototype into the space next year, and one year later they want to use it to launch space vehicles into space.
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