A glass article includes a glass core layer and a glass cladding layer adjacent to the core layer. An average coefficient of thermal expansion (CTE) of the core layer is greater than an average CTE of the cladding layer. An effective 10.sup.9.9 P temperature of the glass article is at most about 750 C.

A glass article includes a glass core layer and a glass cladding layer adjacent to the core layer. An average coefficient of thermal expansion (CTE) of the core layer is greater than an average CTE of the cladding layer. An effective 10.sup.9.9 P temperature of the glass article is at most about 750 C.

Methods are provided for laser processing arbitrary shapes of molded 3D thin transparent brittle parts from substrates with particular interest in substrates formed from strengthened or non-strengthened Corning Gorilla glass (all codes). The developed laser methods can be tailored for manual separation of the parts from the panel or full laser separation by thermal stressing the desired profile. Methods can be used to form 3D surfaces with small radii of curvature. The method involves the utilization of an ultra-short pulse laser that may be optionally followed by a CO.sub.2 laser for fully automated separation.

Methods are provided for laser processing arbitrary shapes of molded 3D thin transparent brittle parts from substrates with particular interest in substrates formed from strengthened or non-strengthened Corning Gorilla glass (all codes). The developed laser methods can be tailored for manual separation of the parts from the panel or full laser separation by thermal stressing the desired profile. Methods can be used to form 3D surfaces with small radii of curvature. The method involves the utilization of an ultra-short pulse laser that may be optionally followed by a CO.sub.2 laser for fully automated separation.

Methods of forming a sheet glass product comprising a plurality of growth-limited glass bump spacers. According to the methods, a glass pane of the sheet glass product is irradiated with laser radiation to locally heat the glass pane at a plurality of spacer localities and induce growth of a plurality of glass bump spacers in the glass pane. The growth of the plurality of glass bump spacers is limited by utilizing a growth-limiting plate comprising a scattering surface portion. The scattering surface portion of the growth-limiting plate mitigates damage to the growth-limiting plate and may also mitigate damage to the glass pane. Vacuum insulated glass products and systems for forming a growth-limited sheet glass product are also provided.

Methods of forming a sheet glass product comprising a plurality of growth-limited glass bump spacers. According to the methods, a glass pane of the sheet glass product is irradiated with laser radiation to locally heat the glass pane at a plurality of spacer localities and induce growth of a plurality of glass bump spacers in the glass pane. The growth of the plurality of glass bump spacers is limited by utilizing a growth-limiting plate comprising a scattering surface portion. The scattering surface portion of the growth-limiting plate mitigates damage to the growth-limiting plate and may also mitigate damage to the glass pane. Vacuum insulated glass products and systems for forming a growth-limited sheet glass product are also provided.

A method for manufacturing a nanoscale object from a structure including a strained elastic layer on a foundation in a solid state present at a surface of a rigid substrate, the method reiterating: melting the foundation for a duration higher than or equal to 50 ns, thickness of the foundation being at least 20 nm and lower than a predetermined thickness corresponding to a theoretical peak-to-peak amplitude of wrinkles, the melting generating a simultaneous deformation of the elastic layer and of the foundation and a localized contact between the elastic layer and the rigid substrate insulating the regions from the foundation; solidifying the foundation to bring the foundation back to the solid state; until the foundation reaches yield point of the elastic layer.

A method for manufacturing a nanoscale object from a structure including a strained elastic layer on a foundation in a solid state present at a surface of a rigid substrate, the method reiterating: melting the foundation for a duration higher than or equal to 50 ns, thickness of the foundation being at least 20 nm and lower than a predetermined thickness corresponding to a theoretical peak-to-peak amplitude of wrinkles, the melting generating a simultaneous deformation of the elastic layer and of the foundation and a localized contact between the elastic layer and the rigid substrate insulating the regions from the foundation; solidifying the foundation to bring the foundation back to the solid state; until the foundation reaches yield point of the elastic layer.

Methods are disclosed directed to a controlled crystallization (ceramic particle growth) of a shaped glass ceramic workpiece. The physical and chemical properties of the shaped glass ceramic of the present invention may be specified or tailored by shaping or machining the workpiece during or in combination with a controlled crystallization process that nucleates (precipitates) ceramic particles from a glass material. For example, in one embodiment, a non-crystalline amorphous solid may be heated above a transition temperature and shaped (e.g., molded, pressed, or the like). Ceramic particles may be precipitated within the solid during at least one of the heating or the shaping, thereby forming a shaped glass ceramic.

The invention relates to a method for locally deforming a flat surface of a substrate made of glass or a glass-ceramic, and to an operating element that can be produced with the method. The method is characterised by the following method steps: applying heat exclusively within a locally limited region via the surface of the substrate by means of laser radiation, gas flame, infrared radiation, electrical microwaves or plasma discharge directed towards the surface of the substrate, in such a way that the substrate is softened at least on the surface within the locally limited region; applying a force acting on the softened surface within the locally limited region, such that the softened surface of the substrate is deformed within the region; and cooling the substrate to obtain a surface that is deformed and set within the local region.