The memory of a material
A popular polymer can remember what shape it was in.
By Stephen Ornes, 00:00 AM March 29, 2010
Nafion is a useful material that has been around since the 1960s, but don’t be surprised if you’ve never heard of it. It was first made by a chemist at DuPont, a company that makes chemicals, and it is a common ingredient in fuel cells. (Fuel cells, which are sometimes used to power satellites, produce energy from hydrogen.)
Now, a scientist in Michigan has shown that Nafion has another nifty purpose: It can “remember” three different shapes. If you were to twist some Nafion into, say, a donu...
Source URL: https://student.societyforscience.org/article/memory-material