Abstract:
Method for ejecting micro-drops of liquid, including the steps of providing a body (18) equipped with at least one passage (30) communicating with a tank (12) of liquid (14), and producing in the passage (30) a choke or a widening that is moveable along a direction of ejection (46), in such a way as to produce the ejection of controlled quantities of liquid (48) from one end (34) of said passage (30).
Abstract:
A micro-actuator includes a shape memory thin film having one end fixed to a substrate and one remaining part which, at room temperature, is in the martensitic phase and assumes a curly-configuration, whereas at a higher temperature than a threshold value it changes to the austenitic condition, wherein the film is completely stretched upon the substrate.
Abstract:
An electrostatic actuator is described, which can be used for moving a yarn fed continuously in a textile machine in a direction orthogonal to the longitudinal direction of the yarn, between two and positions.