xiv PREFACE TO VOLUME 2: NANOSTRUCTURED MATERIALS This book includes eight chapters written by researchers who are at the forefront of their field, which address the role of nanomaterials in chemical sensors. One-dimensional metal oxide structures, carbon nanotubes, fullerenes, and metal nanoparticles are the objects of detailed analysis in the present volume. Processing, properties, and applications of porous semiconductors, zeolites, nanocomposites and ordered mesoporous materials are also discussed in this volume. A brief history of nanotechnology, particulars of nanomaterial properties, specificity, and future trends in nanotechnology can be found in this volume as well. Ghenadii Korotcenkov