Spectrally selective filters and their applications

Official URL: https://dx.doi.org/10.1016/B978-0-323-99901-4.00019-6

Engineering the spectral characteristics of surfaces is of great importance for different applications including but not limited to energy and electronics. Advancements in nano−/micro-fabrication techniques accelerated the progress made in the field by allowing the realization of structures that are comparable to wavelengths of operation, which can exhibit desired characteristics in a broad range of wavelengths. Therefore, understanding both fundamental mechanisms and design principles of such spectrally selective surfaces becomes very important. The aim of this chapter is to demonstrate some examples of such spectrally selective surfaces, as well as their design principles and physical mechanisms, for applications such as passive radiative cooling and highly reflecting/absorbing coatings for high-temperature applications. Having broadband features is attractive for thermal control, plasmonic particles, and surfaces which can bring additional functionality to these broadband spectrally selective filters. Potential uses of such surfaces are also discussed.