Written by experts in the field, this book describes advanced techniques for the chemical synthesis of functional organic nanoparticles and proposes new characterization and manipulation methods for single nanoparticles. Theoretical and experimental studies of the physical and chemical properties of organic particles, semiconductor particles and liquid droplets are reported. The text gives not only scientific details but also discusses the general and historical background, applications, and future perspectives. A clear interpretation of technical terms and concepts is included where necessary. The material for the book originates from the research activities of the collaboration project "Laser Chemistry of Single Organic Nanometer Particles" supported by the Ministry of Education, Science Sports and Culture of Japan. It is written primarily for graduate students, researchers and engineers.