Biotechnology, Data Storage, AR/VR, Imprint Lithography, Glass Materials
Stains, or organic residue, are discolorations on the surface due to contamination or residue from the cleaning process. These contaminants not only impact cosmetic appearance, but may also affect the adhesion of coatings onto the substrate.
Residual or internal stress is caused by tension or refractive index variation formed within glass and glass-ceramic materials during production. This can lead to striations, internal defects, and changes in the surface topography. Internal stress is known to impact the mechanical properties of these materials.
Particles on the surface of glass can be caused by many factors, usually during the cleaning or packaging phase. Lumina's systems are able to detect particles down to 150nm on glass surfaces. Controlling particles is critical for achieving high quality and yield. Identifying particles and being able to take action early in the manufacturing process will also help avoid wasting resources on downstream processes.
Inclusions are the result of contaminants incorporated within the glass during the melting phase. These can impact the optical and mechanical properties of the substrate.
These defects can be caused either during the manufacturing phase, cleaning phase, or due to rough handling of the glass. When layers are stacked, internal scratches may occur. Scratches impact the cosmetic and mechanical properties of the glass.