Research on liquid crystal has been involved in chemistry, physics, Biology, electric and electronic engineering and many other fields. This book is intended to portray on various aspects of research and development that liquid crystal mediums have come across in recent years. Therefore, it is expected that this book will magnetize a wide variety of research workers from crystallographers, molecular physicists, and biophysicists to structural chemists, organic chemists, polymer chemists, and drug industry, and so forth.