1：Experimental Design and Method Selection:

The study involved ink-jet printing of PEDOT:PSS lines and sensors on various substrates (cardboard, photo paper, glass) to evaluate print quality, resistance, and temperature sensitivity. Different ink formulations (pristine and modified with additives like DMSO, PEG, EG, Triton X100) were used to assess their effects.

2：Sample Selection and Data Sources:

Substrates included cardboard (Invercote-T, 280 g/m2), photo paper (Epson Glossy, 225 g/m2), and microscopy glass slides. Samples were prepared with one to five printed layers.

3：List of Experimental Equipment and Materials:

Equipment included a Dimatix 2831 piezoelectric materials printer, AFM (Dimension ICON, Bruker), optical profiler (ContourGT, Bruker), Agilent3400 multimeter, confocal Raman spectrometer (Horiba Xplora Plus), and SEM (MAIA3, Tescan). Materials included PEDOT:PSS ink (Orgacon IJ-1005, Agfa), silver nanoparticle ink (DGP-40LT-15C, ANP), and various chemicals for ink modification.

4：Experimental Procedures and Operational Workflow:

Inks were printed with specific drop spacing and dried. Resistance measurements were conducted using a two-point probe method under nitrogen flow, with temperature controlled by a Peltier cooler. AFM, optical profiler, Raman spectroscopy, and SEM were used for characterization.

5：Data Analysis Methods:

Data were analyzed using software like NanoScope Analysis and Vision64. Resistance changes with temperature were measured, and temperature coefficients were calculated.