 The sensor structure is designed in such a way that it holds the droplet in place so the droplet doesn't move. And we showed that this pinning of the droplet in place is very important for robust measurements. So we have very small data variation and very small noise. In comparison with traditional methods for saying if bacteria is alive or not, our method is an electrical way to tell them apart in a much shorter time. When our droplet is evaporating, the environment becomes more salty. So bacteria will sense this saltier environment. So they will activate those emergency valves and take some of the ions from the droplet. When we are monitoring the conductivity of the droplet, stealing of the ion can be detected in the electrical signal.