The mechanical maps of samples before and after annealing, presented in Figure , are obtained using the same tip, RTESPA 300 (k = 40 N/m), for better comparison between them. However, the films are also imaged using RTESPA 525 (k = 200 N/m) for a more accurate determination of the average modulus for the annealed sample, which presents a much higher elastic modulus (Figure ). (TG(film)) and graphite-based (TGr(film)), and a non-conductive paper strip (α ~ 0.07 mm 2 /s). The setup for the thermal imaging is demonstrated in Figure .