Table 1.

Material properties used in the simulations

Component	Density kg/m3	Electrical conductivity S/m	Relative permittivity	Thermal conductivity W/m/K	Specific heat capacity J/kg/K
Acrylic material	1180	0.55 × 10–6	3.14	0.2	1780
cs material	2250	0.518	4	0.37	3391
ct material	2250	0.518	4	24	709
tDCS Electrode	2250	7.0 × 104	1	24	709
Gel I	1001	9.6	45	0.6	4181
Gel II	1001	7.5	50	0.6	4181
Gel III	1001	2.2	73	0.6	4181
Copper wire	8300	5.8 × 107	1	401	385
tDCS wire insulator	1350	0.22 × 10–8	2.1	0.2	1000
Skin tissue	1109	0.518	66.5	0.37	3391
Fat tissue	911	0.0695	12.4	0.21	2348
Muscle tissue	1090	0.717	63.8	0.49	3421