The crystal morphology of poly(L-lactic acid) thin film

    The crystal morphology of poly(L-lactic acid) thin film

    This image shows the fractal-growing morphology of poly (L-lactic acid) thin film on mica substrate.
    The crystal structure and branch angle were clearly observed.
    (Data provided by Prof. Xu-Ming Xie, Department of Chemical Engineering, Tsinghua University, China)