1. Center of Research Excellence in Nanotechnology (CENT) King Fahd University of Petroleum & Minerals (KFUPM) KFUPM Box 5040 Dhahran 31261 Saudi Arabia
2. Physics Department King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
3. Department of Botany Curzon Hall Campus University of Dhaka Dhaka 1000 Bangladesh
4. Interdisciplinary Research Center for Advanced Materials King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia