Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) The calibration setup; a close-up (figure inset) of the base showing the metallic spindle (b) Calibration curves of HCP (blue) and PCP (red); (c) setup for the tilt test. (d) Bragg wavelength as a function of the bending angle registered with the HCP.
