Answer: photoresists

AnswerCrossword Clue
photoresistsA photosensitive resist that, when exposed to light, loses its resistance or its susceptibility to attack by an etchant or solvent. Such materials are used in making microcircuits
photoresistsPHOTORESIST, an organic material that polymerizes on exposure to ultraviolet light and in that form resists attack by acids and solvents