1. Nanochemistry and NanoengineeringSchool of Chemical EngineeringDepartment of Chemistry and Materials ScienceAalto University Kemistintie 1 00076 Aalto Finland
2. Nanochemistry and Nanoengineering GroupInstitute for Materials ScienceFaculty of EngineeringUniversity of Kiel Kaiserstrasse 2 24143 Kiel Germany
3. Department of Ceramics and Building MaterialsNational Research Center (NRC) Dokki 12622 Cairo Egypt
4. Department of Therapeutic ChemistryNational Research Centre Dokki 12311 Giza Egypt
5. Dental Materials and Additive TechnologiesMerz Dental GmbH Eetzweg 20 24321 Lütjenburg Germany
6. Zewail City of Science and Technology Sheikh Zayed District 12588 Giza Egypt