Nikhil Tiwale and Stanko Nedic: The nanowire firecracker
Bottom up growth of nanostructures is a fascinating area of nanoscience. The growth of nanowires typically takes place by a vapour-liquid-solid mechanism whereby molten metal catalyst particles on the substrate catalyse the growth process. Equal weight ratio of ZnO and graphite powders is often used as precursor, whereby the graphite powder assists in reducing the required reaction temperature and maintains a steady nanowire growth rate. During this process, ZnO nanowire growth also sometimes occurs on the graphite flakes themselves. The presented scanning electron microscope image depicts ZnO nanowires grown on a graphite flake during thermal chemical vapour deposition. The image (originally grayscale) has been coloured using Adobe Photoshop. Our research group at the Nanoscience Centre has been exploring the use of the high performance ZnO nanowire based field effect transistors for memory, logic and sensor device applications.
Nikhil Tiwale and Stanko Nedic: The nanowire firecracker
Bottom up growth of nanostructures is a fascinating area of nanoscience. The growth of nanowires typically takes place by a vapour-liquid-solid mechanism whereby molten metal catalyst particles on the substrate catalyse the growth process. Equal weight ratio of ZnO and graphite powders is often used as precursor, whereby the graphite powder assists in reducing the required reaction temperature and maintains a steady nanowire growth rate. During this process, ZnO nanowire growth also sometimes occurs on the graphite flakes themselves. The presented scanning electron microscope image depicts ZnO nanowires grown on a graphite flake during thermal chemical vapour deposition. The image (originally grayscale) has been coloured using Adobe Photoshop. Our research group at the Nanoscience Centre has been exploring the use of the high performance ZnO nanowire based field effect transistors for memory, logic and sensor device applications.