1.1 Background of Study
With the rate at which population is increasing and the usage of fossil fuels, the need for alternative and sustainable energy development has become a necessity. There is therefore need for energy saving materials that are affordable and that pose no threat to our environment. Areas of interests such as fuel cells, batteries, capacitors, solar cells, etc. afford much opportunity for improvement and research focus. (Lacey et al., 2014)
Detection of hazardous materials is a significant concern for homeland security, and portable sensors are potentially desirable to avoid the complexity of such materials, such as explosives.