Spray Coating Photoresist Ultrasonic Spray Coating Photoresist - Ultrasonic Nozzle - Cheersonic Photoresist coatings can be used in the production of electronic devices and microelectromechanical (MEMs) devices. Photoresists are generally polymer materials that are enhanced by exposure to light (ie, by cross-linking negative photoresist materials) or solubilized (positive photoresist materials), so , Light is used to pattern the photoresist coating on the substrate, the technique is called photolithography. [...]