Patent ID: 9748868
Date: 2017-08-29
CPC Classifications: H01B,H02N

Claim:
1. Composite material, characterized by comprising a matrix of elastic and electrically insulating material, and a filler of electrically conducting material embedded within the matrix, said filler forming within the matrix at least one conductive path defining an active electrode adapted to be associated with a reference electrode for forming an electrical signal output, wherein at least one deformable gap containing an electrically insulating fluid is formed between an outer surface of the conductive path and an inner surface of the matrix, in such a way that a variation of mechanical load applied to the composite material causes a variation of distance between the outer surface of the conductive path and the inner surface of the matrix, said composite material being capable of producing a signal at the electrical signal output depending on the electrostatic effect and a triboelectric charge accumulated by the conductive path, in response to mechanical stresses applied to the composite material.