Disclosed is a method for treating glass and crystalline inorganic materials whereby metal contamination during such process is inhibited. The thermistor includes a first thick film electrode layer, a reactive metal layer, a barrier metal layer and, optionally, a layer to facilitate attachment to an electrical contact. The device is configured to use the calendar application to determine whether to direct a phone call to the user or whether to instantly direct the call to voice mail. The blue photosensitive resin composition includes a pigment combination, an alkali-soluble resin, a compound having an ethylenic group, and a photoinitiator. The invention further relates to a process for the production of this film and to its use in printed circuit boards, ribbon cables, smart cards, RFID labels, membrane keyboards, and film-based circuits of any type. The component may have microencapsulated agents for initiation by operation of the heater element.