Rapid Fabrication Technique for Dry Electrocardiography Electrodes Using Carbon Nanotube/Polydimethylsiloxane Composite

Table II Long-term ECG signal correlation and average peak-to-peak amplitude

	Day 0	Day 1	Day 2	Day 3	Day4
CNT/PDMS-based electrode and reference electrode ECG signal
Correlation	0.9732	0.9755	0.9711	0.9721	0.9701
Ag/AgCl electrode and reference electrode ECG signal
Correlation	0.9983	0.9935	0.9630	0.9432	0.9325
Average peak-to-peak amplitude of ECG signal
Reference Ag/AgCl electrode (A)	0.70	0.70	0.68	0.68	0.65
CNT/PDMS-based electrode (B)	0.71	0.69	0.69	0.69	0.64
Ag/AgCl electrode (C)	0.70	0.70	0.61	0.39	0.32
Ratio of (B) to (A)	1.01	0.98	1.01	1.01	0.98
Ratio of (C) to (A)	1.0	1.0	0.89	0.57	0.49