Stretchable conductor and method for producing the same
The present invention relates to a compliant deformable conductor and a method for producing the same, comprising a wire or a tube made of an electrically insulating material and one or more electrical leads applied on said wire or tube, wherein one or more of said leads comprise a plurality of islets of conductive material, forming an electrically conductive layer providing electrical conduction and/or electrical percolation.
1. A method for producing a stretchable conductor comprising the steps of:
a. providing a wire or tube of an elastic material, said wire or tube having a longitudinal axis;
b. applying a twisting on said wire or tube around the axis thereof, and/or an elongation on said wire or tube along the axis thereof;
while maintaining step b:
c. depositing one or more layers of conductive material on said wire or tube from one or more sectors along said axis; and,
d. releasing said torsion and/or said elongation of said wire or tube.
2. The method of claim 1 , wherein said elastic material is an elastomer selected from the group consisting of silicone rubber, polyurethane and neoprene.
3. The method of claim 1 , wherein said conductive material is selected from the group consisting of metals and conductive polymers.
4. The method of claim 1 , further comprising the step of:
depositing an additional layer of insulating material around said wire or tube and said one or more layers of conductive materials.
5. The method of claim 4 , further comprising the step of providing on said additional layer of insulating material a plurality of levels made up of one or more electrical leads, each level being separated by another layer of insulating material.
6. The method of claim 1 , further comprising the steps of
performing one or more surface preparations, before the deposition step said surface preparation being selected from the group consisting of removal of oligomers, activation of the surface and deposition of a thin layer of a transition metal.
7. The method of claim 1 , wherein said deposition of one or more layers of conductive material is performed by physical or chemical deposition.