4 Applications
At present, we are all faced with the situation of frequent environmental pollution and human diseases. All kinds of environmental pollutants and diseases seriously threaten the living environment and health of human beings. To detect these hazards more quickly and accurately, biosensors with low cost and high efficiency are urgently needed. In this context, cell-free biosensors have made remarkable achievements in the rapid detection of environmental pollutants and disease pathogens (Fig. 4).