Inflatable soft robots powered by dielectric elastomer actuators show promise for extra-terrestrial applications. These must be stowed in a deflated configuration for launch, necessitating a method for inflation. Traditional methods, such as stored compressed gas, introduce unwanted mass, volume, and rigidity.
Gas Forming Reactions offer an alternative mechanism. Isolating citric acid in a silicone membrane creates a soft balloon which can be safely placed inside a soft structure and surrounded by bicarbonate. By adding an electrical connection inside and a soft electrode to the exterior we can electronically rupture the balloon to release the acid and trigger inflation.
|