1. Nanoparticles by Design Unit, Okinawa Institute of Science and Technology (OIST) Graduate University, 1919-1 Onna-Son, Okinawa 904-0495, Japan
2. Department of Physics and Helsinki Institute of Physics, University of Helsinki, P.O. Box 43, FIN-00014 Helsinki, Finland
3. Nanotechnology Research Laboratory, Al-Quds University, P.O.
Box 51000, East Jerusalem, Palestine