Microoxygraph Device for Biosensoristic Applications

Table 2

Comparative table of different three-electrode configuration microoxygraphs functional features.

Microoxygraphs	Current work	[15]	[25]	[27]
Sample volume	100 µL	d.n.s.	d.n.s.	200 µL
Fluidic system	Yes	No	Yes	No
Reducing agent [Na2S2O4]	0.1 M	0.1 M	0.1 M	0.1 M
Cathode material/thickness (nm)	Gold 50	Gold 400	Gold 250	Gold 250
Cathode area (mm^2)	0.2	0.04	0.0004	0.025
Membrane material/thickness (µm)	PDMS/80		PDMS/15	PDMS/20
Δ average current	0.54 ± 0.06 µA	nA (d.n.s.)	7.09 ± 0.09 nA	152.18 ± 0.87 nA
Average 90% response time (sec)	39.6	40	13.4	4.9