Photoresponsive gas-generating material, the micro-pump and the microfluidic device

A photoresponsive gas-generating material used in a micropump of a microfluid device having a fine channel is formed, when light is irradiated gas efficiently generated, it is possible to convey the microfluidic, Moreover photoresponsive gas-generating material capable of increasing the liquid feed efficiency, as well as micro-pump using the light-responsive gas generating material. A gas generator used in a micropump of a microfluid device having a fine channel in the substrate is formed, photoresponsive gas-generating material 13 comprising a photoacid generator, and an acid stimulus responsive gas generating agent , and the micro pump 10 light responsive gas generating material 13 is housed inside.