[1] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland
[2] Acad Sinica, Inst Phys, Taipei 115, Taiwan
[3] Tatung Univ, Dept Mat Engn, Taipei 104, Taiwan
[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
[5] Natl Tsing Hua Univ, Dept Engn Sci & Syst, Hsinchu 300, Taiwan
[6] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Chilung 202, Taiwan
[7] Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan
[8] Pohang Univ Sci & Technol, X Ray Imaging Ctr, Pohang 790784, South Korea