Silica (SiO2) is one of the most common materials on Earth. The crystalline form α-quartz is the stable silica polymorph at ambient conditions although metastable forms exist. α-quartz is a piezoelectric material, it can be produced artificially and is widely used for example in electronics and the biosciences. Despite the many application areas, the atomic surface structures of silica polymorp...

Grunspan, M., Antweiler, H., and Dehnen, W. (1973). British Journal of Industrial Medicine, 30,74-77. Effect of silica on phospholipids in the rat lung. The total amount of phospholipids and the contents of sphingomyelin, phosphatidylcholine, phosphatidylserine, and phosphatidylethanolamine have been estimated in the lungs of rats from 2 to 90 days after intratracheal injections of quartz and c...

Relationships between the recrystallized grain size and stress are investigated for experimentally deformed water-added quartz aggregates. For stresses ≥100 MPa there is a variation in measured given stress. This correlates with change c-axis fabric general shear experiments, where samples larger sizes have dominantly prism fabrics smaller basal fabrics. The dislocation creep flow law also ...

A common method for measuring the mass of organic carbon in airborne particulate matter involves collection on a quartz "lter and subsequent thermal analysis. If unaccounted for, the adsorption of organic gases onto quartz "lters will lead to the overestimation of aerosol organic carbon concentrations (positive artifact). A recommended method of correction for the positive artifact involves sam...