TABLE II. SUMMARY OF ACCELERATED AGING TEST FOR GRAPHENE MICROELECTRODE ARRAYS.

Array	Final Status	Time Elapsed (days in 87 °C PBS)	Equivalent Lifetime (years in 37 °C)	Failure Mechanism
PET #1	Working	30	2.63	No failure
PET #2	Working	30	2.63	No failure
PET #3	Working	30	2.63	Minor PBS Permeation
PET #4	Working	30	2.63	No Failure
SU-8 #1	Failed	22	1.93	SU-8 cracks over electrode
SU-8 #2	Failed	17	1.49	SU-8 cracks over electrode
SU-8 #3	Failed	8	0.70	SU-8 cracks over wire
SU-8 #4	Failed	7	0.61	SU-8 cracks over wire