In this book, the authors gather and present current research from across the globe in the study of the properties, technological applications and health issues relating to indium. Topics discussed include the properties of indium, gallium and Ga-In alloys in confined geometry; indium as a co-catalyst in Novel Cu or Ni catalysts for reduction of biomass derived fatty acids to alcohols; reliability of indium tin oxide thin films; indium reagents for chemical transformations; indium atoms using electron and optical spectroscopy; indium sulphide-manganese ore; rare earth ions doping on the photoluminescent properties of indium hydroxide; and hydrothermal synthesis of indium tin oxide nanoparticles without chlorine contamination.