Unlock Exclusive Discounts & Flash Sales! Click Here to Join the Deals on Every Wednesday!
Amorphous SiO2 is a substance of considerable technological importance, which displays a number of unusual features. In the glassy state, for instance, its compressibility increases with increasing pressure and its refractive index, as well as its elastic moduli, increase when the temperature rises. This archetypal glass former is made up of a threedimensional open network of SiO4 tetrahedra linked by bridging oxygens. The very strong Si-O bonds have an almost constant length, whereas Si-O-Si angles can adopt a wide range of values.