How to empty the ketchup bottle every time
http://www.economist.com/news/science-and-technology/21711015-and-improve-power-plants-too-how-empty-ketchup-bottle-every-time [www.economist.com]
2016-12-07 00:41
Not actually, but in theory.
For more than a decade Kripa Varanasi and his colleagues at the Massachusetts Institute of Technology (MIT) have been creating and studying slippery surfaces for use in industrial equipment such as steam turbines and desalination plants.
Every fluid requires its own surface structure and lubricating agent to prevent stickiness. Fill the tiny gaps in the surface with the liquid, and the otherwise gooey substance won’t be able to stick.