1. Chemical and Biological Engineering Department, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
2. Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
3. Chemical Engineering Department, Brigham Young University, Provo, UT 84602, USA