Lotus is well known for its stunning ability to keep stain less no matter what a dirty setting it grows out from. Now CAS scientists develop a "lotus membrane", a kind of nano-material that can neitherbe wetted nor smeared. Recently at the Institute of Chemistry under the Chinese Academy of Sciences (CAS), a group of scientists led by Prof. Jiang Lei successfully prepared a kind of carbon nano-tube film that is super"amphiphobic"(having both superhydrophobic and super-lipophobic