Green nanotechnology : solutions for sustainability and energy in the built environment This book explores the science and technology of tiny structures that have a huge potential to improve quality of life while simultaneously achieving reductions in the use of fossil fuels. It examines energy flows in nature and how the optical properties of materials can be designed to harmonize with those flows. It then discusses the properties that can be achieved in real materials to take advantage of natures energy flows Green nanotechnology: introduction and invitation In harmony with the environment: natures energy flows and desired materials properties Optical materials science for green nanotechnology: the basics Visual indoors outdoors contact and daylighting: windows Electric lighting and daylighting: luminaries Heat and electricity: solar collectors and solar cells Coolness: high albedo surfaces and sky cooling devices Supporting nanotechnologies: air sensing and cleaning thermal insulation and electrical storage Conclusions: nanotechnologies for a sustainable future