The invention relates to a self-assembly microstructure with a polyimide thin-film elastic joint, which contains at least one stationary part of the microstructure and at least one movable part of the microstructure. Both pump chambers each have a fluid chamber and a blood-carrying chamber. , the physical chassis of a networking device as well as the various cards, modules, andor blades inserted within the chassis. The first switch node is for connecting to one node of an external circuit.