Transportation and release of Janus micromotors by two-stage rocket hydrogel

Abstract

A fast two-stage hydrogel rocket is described that displays efficient autonomous motion, long transportation time and the release of Janus micromotors that can self-propel after hydrogel disintegration. Such an attractive two-stage hydrogel rocket holds considerable potential for the on demand delivery of artificial small motors and further diverse applications of nano/micro machines.