Known as a «solid phase extraction membranes,» the disk captures either iodine or silver depending on the chemical treatment. (treehugger.com)
The two main routes by which a solid - solid phase transition can occur differ by whether the atoms move together or independently of one another. (sciencedaily.com)
For example, under increasing pressure and temperature conditions bismuth undergoes an array of phase transitions, including eight different types of solid phases observed so far. (sciencedaily.com)