Single-shot x-ray differential phase-contrast and diffraction imaging using two-dimensional transmission gratings Wen, Harold H. ; Bennett, Eric E. ; Kopace, Rael ; Stein, Ashley F. ; Pai, Vinay Abstract Publication: Optics Letters Pub Date: June 2010 DOI: 10.1364/OL.35.001932 Bibcode: 2010OptL...35.1932W