Glucose biosensors are devices that measure the concentration of glucose in a solution, often used for monitoring blood sugar levels in individuals with diabetes. They typically consist of a biological component, such as an enzyme, that reacts with glucose, and an electronic component that converts this reaction into a measurable signal. These sensors work by detecting the electrical current produced during the enzymatic reaction, which is proportional to the amount of glucose present. Glucose biosensors are essential tools for managing diabetes, helping patients maintain their blood sugar levels and avoid complications associated with the disease.