Dimensions of different design of sensors.

Devices	Electrode dimensions (μm2)
Design 1	WE-50 × 50, SE-50 × 50, RE-50 × 50, CE-50 × 50
Design 2	WE-100 × 100, SE-100 × 100, RE-100 × 100, CE-100 × 100
Design 3	WE-150 × 150, SE-150 × 150, RE-150 × 150, CE-150 × 150
Design 4	WE-200 × 200, SE-200 × 200, RE-200 × 200, CE-200 × 200