Table 1 Different functions of AuNPs in biosensors
From: Development of gold nanoparticle-based biosensors for COVID-19 diagnosis
Types of biosensors | Principle of function | Functions of AuNPs | Sensor advantages |
|---|---|---|---|
Optical biosensors | It works with the principle of creating a light beam with certain characteristics from the light source | Improve the process of change of refractive index | Developed sensitivity |
Electrochemical biosensor | Based on utilization/production of electrons and reaction of enzymatic catalysis | Catalysis of reaction | Developed sensitivity and selectivity |
Piezoelectric biosensors | It is based on measuring the mass of the sample collected on a piezoelectric crystal surface by detecting the difference in resonance frequency | Effect on enzyme immobilization and mass changes | Developed sensitivity |