Limit of the moth’s eye principle and other impedance-matching corrugations for solar-absorber design

摘要: The moth’s eye principle of optical-impedance matching by means an array tapered protuberances has been studied to determine the limit obtainable for reflection reduction. Analogous multilayer equivalents were optimized over a wide band, using recently developed optimization method, in which one or more layers are specified inclusions. A 30 dB reduction reflectance was obtained bandwidth 1.4 times short-wavelength band. These results also related corrugated conducting surfaces used new solar-absorber design that uses corrugations conductor and is required be best absorption (a) emissivity (e) values. optimum corrugation geometry two types periodic surface discussed view further development practical applications.