Abstract: There is provided a multilayer composite comprising at least one carbon layer having a plurality of cracks along a first directional axis, said cracks being spaced apart from each other in a periodic manner along a second directional axis, wherein said second directional axis is substantially perpendicular to said first directional axis in the same plane; and a ferroelectric polymer layer. There is also provided a method of producing a multilayer composite. There is further provided a bandage or biosensing device comprising the multilayer composite.