1. Key words: crystallization, noncrystalline ice, FT-IR reflection–absorption spectroscopy, temporary evolution.

2. Aerogols are a novel nanoporous, noncrystalline material, whose structure can be controlled at nanometer scale.

3. 16 Devitrification. The process in which a glass ( noncrystalline or vitreous solid ) transforms to a crystalline solid.

4. The Amorphous material is a noncrystalline solid, and the glass is Amorphous material produced through melt quenching

5. Glass Ceramics have a structure that consists of many tiny crystalline regions within a noncrystalline matrix.

6. Amorphous solid, any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern