UV/Ozone treatment of PS might result in new, unwanted chemical composition of the surface. Please note that PS is very hydrophobic and that air bubbles are easily formed on the surface when working with water-based solutions. To reduce the risk of bubble formation, make sure to degas the solutions and to preheat them when working at temperatures above RT. It is also possible to pre-wet the sensor surfaces with ethanol and then replace ethanol with the water-based solution.
Our sensors can be coated with basically any material, building a model system for the research problem you want to explore. Through the years our customers have challenged us to deliver a wide range of custom-made surface coatings to fit their specific experiments. Some are now available as one of our 25 special-order sensors and can be made upon request. Are you interested in our special-order or customized sensors, let us know by describing the sensor you need.