Abstract: The present invention relates to a composite membrane (10) comprising a fibrous fabric (1) of nanofibres (11), wherein the thickness of the fabric (1) is between 10 nm and 50 ?m and said fabric is impregnated with a wetting liquid (A). According to the invention, the composite membrane is immersed in a second fluid (B) which is immiscible with the wetting liquid (A), forming an A/B interface between the wetting liquid (A) and the immiscible fluid (B), and the composite membrane is capable of remaining tensioned when it is compressed from its resting state until reaching dimensions corresponding to 5% of its dimensions in the resting state, and when it is stretched from its compressed state until reaching dimensions corresponding to 2000% of the length in the compressed state. The present invention also relates to a process for manufacturing such a membrane.

Abstract: A device including a wire element and a winding element to wind the wire element. The winding element is configured to change from a first stable state to a second stable state. A change in the state occurs either naturally or by changing an environment parameter so as to result in the wire element being wound on the winding element. In the naturally occurring state change, the energy of interaction between the wire element and the environment is higher than the energy of interaction between the wire element and the winding element. The environment parameter change results in the wire element being wound on the winding element during the change from the first state to the second state.