Editing Diamond anvil cell (section)

===Single crystal X-ray diffraction===
Good single crystal [[X-ray diffraction]] experiments in diamond anvil cells require sample stage to rotate on the vertical axis, [[omega]]. Most diamond anvil cells do not feature a large opening that would allow the cell to be rotated to high angles, a 60&nbsp;[[degree (angle)|degrees]] opening is considered sufficient for most [[crystals]] but larger angles are possible. The first cell to be used for single crystal experiments was designed by a graduate student at the [[University of Rochester]], Leo Merrill. The cell was triangular with [[beryllium]] seats that the diamonds were mounted on; the cell was pressurized with screws and guide pins holding everything in place.