Analytical Techniques for Separation and Novel Optical Sensors and Biosensors

Optical sensors are a type of device that detects the intensity of light. This could be a basic component that alerts you when ambient light levels exceed or fall below a certain threshold, or a highly sensitive instrument that can detect single photons. The majority of optical sensors generate an electrical signal. An optical sensor measures a physical quantity of light and then converts it into a form that may be read by an integrated measuring device, depending on the type of sensor. Optical sensors are made by a chemically selective layer reacting with a species of interest to change the sensor's optical characteristics. Optical sensors have previously shown to be either very simple and cost-effective devices or technologies that allow for very complex multisensor applications.

A biosensor is a type of analytical instrument that detects and converts changes in biological processes into an electrical signal. A biosensor is a device that uses signals proportional to the concentration of an analyte in a reaction to assess biological or chemical responses. Disease monitoring, drug discovery, and the detection of contaminants, disease-causing microorganisms, and disease markers in physiological fluids are among applications where biosensors are used (blood, urine, saliva, sweat). The oxidation of an enzyme is a regularly used biological response.