Fig. 4
From: 3D extruded composite thermoelectric threads for flexible energy harvesting
Bending studies of the thermoelectric threads. a The picture indicates a bending radius rb = 5 mm of p-type thread held over a flexible Kapton plastic support. b The normalized electrical resistance change of a representative p-type thread was zero for bending radii larger than rb = 5 mm and increased by 30% upon reducing to rb = 2 mm. c The resistance shows no long term degradation even after hundreds of flexing cycles, indexed by Nc.
