1. Fabrication of ZnO nanostructures / Andrey Bakin, Arne Behrends, Alexander Wagner, and Andreas Waag -- 2. Optical properties of and optical devices from ZnO-based nanostructures / Michael Lorenz, Martin Lange, Christian Kranert, Christof P. Dietrich, and Marius Grundmann -- 3. Piezoelectric nanogenerator based on ZnO nanomaterials / Jinhui Song -- 4. Nanobiology and nanomedical devices using zinc oxide nanostructures / Magnus Willander and Omer Nur -- 5. ZnO nanostructures : toxicity and phototoxicity characteristics in biological samples / Magnus Willander, O. Nur, M. Fakhr-e-Alam, M. Atif, and M.S. AlSalhi -- 6. Zinc oxide nanostructures : synthesis, characterization, and device applications on nonconventional substrates / Magnus Willander, Omer Nur, Kamran ul Hasan, Gul Amin, and Muhammad Yousuf Soomro.