The tightest knot ever made is a tied-up chain 54 atoms long

A tiny molecular chain of gold, carbon and phosphorus has tied itself up into the smallest and tightest knot ever seen

​A tiny molecular chain of gold, carbon and phosphorus has tied itself up into the smallest and tightest knot ever seen A tiny molecular chain of gold, carbon and phosphorus has tied itself up into the smallest and tightest knot ever seen