Electrochemical Biosensor Design
Signal-to-noise optimizationDetection limit theoryBiofilm electrode designMediator chemistryInterference suppression
Biosensor Design Optimization
Signal-to-noise analysis for electrochemical biosensors
0.25 cm²
15 μm
2.5 mM
100 mg/L
25°C
7.0
0.10 M
10 mg/L
Signal Current
2.20 μA
Electrochemical response
Signal-to-Noise Ratio
1.4
Poor
Detection Limit
216.00 mg/L
3σ criterion
Response Time
5 s
Diffusion limited
Additional Metrics
Sensitivity:0.022 μA/(mg/L)
Selectivity:60.7%
Total Noise:1.581 μA
Detection Curve Preview
1 mg/L:Below LOD
6 mg/L:Below LOD
11 mg/L:Below LOD
16 mg/L:Below LOD
21 mg/L:Below LOD
Optimization Tips
Increase electrode area or reduce biofilm thickness to improve SNR. Lower mediator concentration may reduce detection limit. Reduce interferent concentration or use selective membranes.