Saleh T. Mahmoud obtained his Ph.D. in Physics from Indian Institute of Technology-Delhi (India 2001). He is a full professor at Department of Physics, UAEU. He is the principle investigator and Co-PI of 20 research projects and supervised several postgraduate students. He is an expert in measuring the optical and electrical properties of nanomaterials using different techniques. He has vast experience in nanoparticles synthesis and sensors’ fabrication for detecting hazardous gasses