Crystalline and amorphous forms of silicon are the principal materials used for solid-state
electronics and photovoltaics technologies. Silicon is therefore a well-studied material …

THE preparation of highly porous materials by sol–gel processing followed by supercritical
drying was pioneered by Kistler in 19311. These materials, called aerogels and comprising …

Despite almost forty years of trying, no one has managed to transform diamond into graphite
under pressure, or find out what the pressure limit for diamond might be. If diamond were to …

Amorphous and crystalline forms of silicon are well-known, tetrahedrally coordinated
semiconductors. High-pressure studies have revealed extensive polymorphism among …

Structurally disordered materials pose fundamental questions,,–, including how different
disordered phases ('polyamorphs') can coexist and transform from one phase to another …

Amorphous silicon is a semiconductor with a lower density than the metallic silicon liquid. It
is widely believed that the amorphous–liquid transition is a first-order melting transition. In …

The crystalline-to-amorphous transformation in the solid state is currently the subject of
intense study. With the seminal discovery of amorphization of H2O ice I under pressure1 …

Synthetic diamond is formed commercially using high-pressure, chemical-vapour-deposition
and shock-wave processes, but these approaches have serious limitations owing to low …

Hydrogenated amorphous and nanocrystalline silicon films manufactured by plasma
deposition techniques are used widely in electronic and optoelectronic devices,. The …

Abstract KNOWLEDGE of the structure of liquid silicates is essential to understanding the
properties of materials ranging from magmas in lava flows to melts in glass processing. At 1 …