Koyama, T., et.al, Rev Sci Instr 83
Meyer, M., et.al, J. Synchrotron Radiation 20
 Je, J. H.
Jung, J. patent US 20130280421 A1, (2013).
Doring, F., et.al, Optics Express 21(16
 This work was supported by the National Science Foundation under Grant No. 1648219. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. Olga Makarova is thanked for contributions to the experimental work..