Using Bragg Coherent Diffraction Imaging to See Strain in a Tensile Loaded Copper Film

Coherent Diffraction Imaging (CDI) is a novel imaging technique using coherent light sources and iterative phase retrieval (IPR) algorithms instead of lenses to form high resolution images. Bragg coherent diffraction imaging (BCDI) is a variation of CDI that measures coherent diffraction near a Bragg peak of a crystalline sample. Since the Bragg peak contains information about lattice strain, the IPR retrieves nanometer scale images of crystalline strain. We present three dimensional BCDI reconstructions of the strain in a single grain in polycrystalline copper thin films under tensile loading measured at sector 34 of the Advanced Photon Source.