1. Department of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden
2. Nano-Biomedical Diagnostics Laboratory, Assiut University, Assiut, 71516, Egypt
3. Nanotechnology Research Centre (NTRC), The British University in Egypt, El-Shorouk City, Suez Desert Road, P.O. Box 43, Cairo, 11837, Egypt