The explosive increase in information and the miniaturization of electronic devices demand new recording technologies and materials that combine high density‎,‎ fast response‎,‎ long retention time and rewriting capability‎.‎ As predicted‎,‎ the current silicon‎-based computer circuits are reaching their physical limits‎.‎ Further miniaturization of the electronic components and increase in data storage density are vital for the next generation of IT equipment such as ultra high‎-speed mobile computing‎,‎ communication devices and sophisticated sensors‎.‎ This original book presents a comprehensive introduction to the significant research achievements on high‎-density data storage from the aspects of recording mechanisms‎,‎ materials and fabrication technologies‎,‎ which are promising for overcoming the physical limits of current data storage systems‎.‎ The book serves as an useful guide for the development of optimized materials‎,‎ technologies and device structures for future information storage‎,‎ and will lead readers to the fascinati‎.‎‎.‎‎.‎