‘Figure 2a Device B.txt’: data for Figure 2a. Raw data for four measurements including time, applied voltage and measured current for applied weights of 0g, 50g, 100g and 0g rec (‘rec’ for recovered which was taken after 100g was applied).

‘Figure 2b reverse bias.txt’: data for Figure 2b for device A and device B for applied weights of 0g, 50g, 100g under reversed applied bias ‘Figure 2b V_FB insert.txt’: extracted data for Figure 2b insert, for calculation see paper.

‘Figure 4 Device A phi gauge.txt’, ‘Figure 4 Device B phi gauge.txt’, ‘Figure 4 b insert Delta phi.txt’: data for Figure 4 50g = 1.93kPa, 100g = 2.58kPa (see paper) Delta phi = - 0.0247 * ln(I_load/I_no_load) Gauge = (I_load - I_no_load) / (I_no_load * epsilon) (for explanation of epsilon see paper)

‘Figure S2 Device A.txt’: data for Figure S2. Raw data for four measurements including time, applied voltage and measured current for applied weights of 0g, 50g, 100g and 0g rec (‘rec’ for recovered which was taken after 100g was applied).

‘Figure S3 device A.txt’, ‘Figure S3 device B.txt’: data for Figure S3 for both devices A and B under applied weight of 0g

‘Figure S4 forward bias.txt’: data for Figure S4 for device A and device B for applied weights of 0g, 50g, 100g under forward applied bias