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Table 2 Performance comparison of developed sensors

From: Increased sensitivity of Au-Pd nanolayer on tapered optical fiber sensor for detecting aqueous Ethanol

Fibre optic coating Time response Sensitivity vol%
Response time Recovery time
No coating 20 s 18 s 0.003/vol%
Palladium 17 s 12 s 0.043/vol%
Gold 19 s 9 s 0.005/vol%
Gold: Palladium 2:0.7 15 s 11 s 0.062/vol%
Gold: Palladium 2:1 13 s 6 s 0.074/vol%