A Möbius strip has a peculiar geometry, but anyone can make one with a strip of paper. Put a half-twist in the strip and tape its ends together, and a single-surface curiosity is born.
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2002/06/1350.jpg?resize=132%2C263&ssl=1)
Making a Möbius strip out of paper is one thing, but now a team of Japanese researchers has found a way to coerce a single crystal into the same shape.