Tube-rolling and formation of mechanically robust micro-tubes in graphene oxide aqueous dispersions during shear flow.

Ok, Chang Min; Kim, Seo Gyun; Jeong, Seung Yol; Lee, Heon Sang · Soft Matter · 2019

basic_science · Level V

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Abstract

We showed that GO domains at low pH are under a tube-rolling motion with a vorticity alignment at low shear rates. Mechanically robust micro-tubes were formed during tube-rolling. The micro-tubes were highly bendable and exhibited excellent elastic recovery. There was no restacking of GO sheets to graphitic structures for the GO micro-tube wall in a wet state.