Thin Film Nanophotonics: Conclusions from the Third International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors (TFE3S) provides up-to-date coverage of the properties and photonic applications of nanostructured thin films, including discussions on optical waveguides, photonic lattices for wideband reflectors, polarizers, bandpass filters, meta surfaces, plasmonic resonance sensors, smart windows, optical switches, photovoltaics, and many more. This is an important reference source for materials scientists, engineers and physicists working in the areas of nanomaterials and photonics. New thin film applications such as thin-film topological insulators and 2D materials are gaining attention and growing exponentially, hence this book is an ideal reference on how engineered thin films for various nano-photonics applications present exponential growth in a wide array of areas.