Figure 9
Top: nanofocusing lenses made by electron-beam lithography and reactive ion etching of silicon (Schroer et al., 2005). [Reused with permission from C. G. Schroer, O. Kurapova, J. Patommel, P. Boye, J. Feldkamp, B. Lengeler, M. Burghammer, C. Riekel, L. Vincze, A. van der Hart and M. Küchler, Applied Physics Letters, 87, 124103 (2005). Copyright 2005, American Institute of Physics.] Bottom: diamond planar refractive lenses fabricated using a similar technique (Nöhammer et al., 2003). |