fig1

Figure 1. (A) Schematic illustration of the test rig used to measure Peltier effect in PPy in 2005. Reproduced with permission^[21]. Copyright 2005, Elsevier; (B) Schematic illustration of the suspended Poly(Ni-ett) Peltier measurements and results. Reproduced with permission^[11]. Copyright 2018, Nature Publishing Group; (C) Experimental setup used for the doped C60 Peltier coolers with the temporal cooling response. Images reproduced with permission^[22]. Copyright 2022, Wiley-VCH. PPy: Peltier cooling in polypyrrole.