Diatoms, single algae cells, are gaining much interest in nanoscience due to their distinctive porous silica structure and properties. The proposed book is the first book published on diatom nanotechnology providing the most comprehensive overview in this field from international leading experts. The book covers the unique porous silica structure of diatoms, the mechanism of their formation, properties and the broad range of applications in nanotechnology including nanofabrication, optical biosensors, gas sensors, water purifications, photonics, drug delivery, batteries, solar cells, supercapacitors, new adsorbents and composite materials.