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" ... But to make that glass actually function as a touch screen, three other elements are needed -- indium, tin and oxygen. Indium oxide and tin oxide are combined to create indium tin oxide, which then goes into the transparent film in the screen that conducts electricity and makes it responsive to all those taps and swipes. ... "
" ... Dental amalgam is a mixture of metals. About half of its weight is made up of a powdered alloy of silver, tin, and copper, with the other 50 percent being elemental mercury. Sometimes small amounts of zinc, palladium, or indium are included too. Mercury is used because it keeps the other ingredients pliable long enough to press the compound into a tooth. Once it hardens, it’s strong enough to withstand the forces put on it during biting and chewing. ... "
" ... Founded in 2008, NuvoSun's technology uses copper, indium, gallium and selenium to convert sunlight into electricity. The compound and the manufacturing process involved make it possible to create ultra thin and flexible solar cells. Silicon solar cells are thicker and prone to breakage if they are not protected by glass. ... "
" ... In a more sophisticated analysis, Reller has included the effects of new technologies, and projects how many years we have left for some key metals. He estimates that zinc could be used up by 2037, both indium and hafnium - which is increasingly important in computer chips - could be gone by 2017, and terbium - used to make the green phosphors in fluorescent light bulbs - could run out before 2012. It all puts our present rate of consumption into frightening perspective. ... "
" ... MicroLink's strong suit is that it has figured out how to make triple-junction solar cells -- ones that use multiple layers to capture different wavelengths of light -- more cheaply than the competition. It does this in two ways, by growing its solar panels on indium phosphide, which is cheaper than the more standard material of gallium arsenide. The company has also figured out how to peel its completed solar panel off while leaving its substrate intact for future use, which again reduces costs. ... "