Abstract
The techniques for applying an optical liquid high pressure cell are described. The optical cell described enables visual observation at high pressures up to about 1 GPa. Its advantages over the diamond anvil cell are the larger sample volume, the higher accuracy of pressure measurement (about ± 1 MPa), and the higher reliability of pressure control. The cell has been applied in the fields of chemistry, biology, physics, chemical engineering, and etc. Recently, we show here how it is applied to the observation of crystal growth at high pressure.
