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. 2024 Nov 20;14(50):37087–37103. doi: 10.1039/d4ra06697a

SAW biosensors based on different sensitive layers for the detection of E. coli.

Type of substrate Wave mode Dielectric constant TCF (ppm per °C) Velocity (m s−1) Detection limit or sensitivity Reference
64°YX LiNbO3 SH-SAW 85.2 80 4742 1.8 × 10−15 M 55
AIN Love wave 8.5 19 5700 6.54 × 105 CFU mL−1 45
LiTaO3 SH-SAW (LGS) 470 −33 4160 106 cells per mL 56
SiO2 Love wave 3.8 105 cells per mL 57