Microstructural Investigation of ZnO Nanowires for Therapeutic Applications

Zinc oxide (ZnO) is known as an important semiconductor, which has been studied extensively in the past few years due to its fundamental and technological importance [1]. Many attractive properties of ZnO, such as wide bandgap (3.37 eV), large exciton binding energy and excellent chemical stability, [2] suggest a great many possible practical applications such as in gas sensors, ceramics, field-emission devices and luminescent materials [3] and therapeutic. Size and crystalline morphologies play important roles in these applications, which have driven researchers to focus on the synthesis of nanocrystalline ZnO [4].