This book highlights the latest developments and advancements in cholesteric liquid crystals. It covers a wide range of techniques to develop/modify the cholesteric liquid crystal systems with various optically active chiral dopants. It presents the unexplored features of cholesteric liquid crystals, their diverse properties such as fluorescence, photoluminescence, utility in optical smart windows, optical switching states, energy, and sensor usage with the modification by various carbon-based nanomaterials as intercalating substances. The book examines developments in the field of size and shape of cholesteric liquid crystals. In summary, the book is essential for readers to understand all parameters of cholesteric liquid crystals relating to the device architectures, techniques of formation, optical storage applications, display properties, and various diversified applications in the field of optical smart windows, molecular switches, etc.