The new devices are powered by nano-motors and do not require any external stimulus.
Designed to self-propel, the micro-submarines leverage changes in biological pH environments to adjust their buoyancy and reach specific targets inside the body.
UNSW School of Chemical Engineering and School of Biomedical Engineering researcher Dr Kang Liang said: “We already know that micro-motors use different external driving forces such as light, heat or magnetic field, to actively navigate to a specific location.
