Micro electrical mechanical system (MEMS) valve

A micro electrical mechanical system (MEMS) valve, comprising:

• a first body defining a first channel having a first channel side and a second channel side and a second channel intersecting the first channel between the first and second channel sides;
• a second body defining a third channel and being disposed to rotate within the first channel between:
• first rotational positions with the second and third channels rotationally aligned to permit flow through the second and third channels, and
• second rotational positions with the second and third channels rotationally misaligned to inhibit flow through the second channel;
• a medium charged into the first channel at opposite sides of the second body;
• and
• first and second thermal element parts proximate to the first and second channel sides of the first channel, respectively, and comprising excitable components which are excitable by exposure to radiation to adjust relative temperatures and pressures of the medium at the opposite sides of the second body to drive a rotation of the second body to the first or the second rotational positions.