It may not have the ubiquity of Facebook or the scale of Wal-Mart, but NuMat Technologies someday could change the world just a little bit. At least that's what the audacious student entrepreneurs behind it believe. NuMat is a university spinout that aims to revolutionize clean tech by making natural-gas vehicles more practical. The Northwestern students behind the startup have come up with algorithms that design nanomaterials that could disrupt the gas-storage industry. Liquid gasoline is expensive. Natural gas is cleaner and cheaper, but it's hard to squeeze much of it into a tank in a car. NuMat says it can do that at low pressures, increasing capacity by a factor of five. The secret: a proprietary kind of metal-organic framework (MOF), which is a type of remarkable crystalline material with a vast internal surface area; if all of the tiny walls on the inside of a single gram were unfolded, the structures would cover a football field. NuMat's nanomaterial is ultraporous and, as the plan goes, will hold natural gas the way a bath sponge contains water. The vision is ambitious. Says chief technology officer Christopher Wilmer, a 29-year-old Ph.D. candidate in chemical engineering: It's "the majesty of self-assembly on the molecular scale."
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