1. Ph.D. Candidate, African Univ. of Science and Technology, P.M.B. 681, Garki, Abuja, Federal Capital Territory, Nigeria; Assistant Lecturer, Dept. of Materials Science and Engineering, Univ. of Ghana, P.O. Box LG 77, Legon-Accra, Ghana.
2. Lecturer, Dept. of Biomedical Sciences, School of Engineering Sciences, Univ. of Ghana, PMB, Legon, Accra, Ghana.
3. Researcher, African Univ. of Science and Technology, PMB 681, Abuja FCT, Garki, Nigeria; Lecturer, Dept. of Civil Engineering, Nigerian Turkish Nile Univ., Airport Rd. By-pass, Jabi, Abuja, Nigeria.
4. Ph.D. Candidate, African Univ. of Science and Technology, P.M.B. 681, Garki, Abuja, Federal Capital Territory, Nigeria.
5. Associate Professor, Dept. of Materials Science and Engineering, Kwara State Univ., P.M.B. 1530, Malete, Kwara 23431, Nigeria.
6. Professor, Dept. of Mechanical and Aerospace Engineering, Princeton Univ., 1 Olden St., Princeton, NJ 08544 (corresponding author).