Glass‐Ceramics by Photosensitive Processes

Glass‐ceramics constitute a unique set of materials as they hold the promise of producing interesting crystal‐like properties utilizing glass‐making capability. One property that would make them more interesting and useful would be whether they could be produced by a photosensitive process similar to that in special glasses. One such material already exists, namely Corning's photomachinable Fotoform ^™ . In this study, we will describe two new photosensitive glass‐ceramic materials: (1) Fotoform as a tunable CTE material and (2) a new photosensitively produced nepheline phase glass‐ceramic.