A thin film broadband absorber based on multi-sized nanoantennas
A thin film broadband absorber based on multi-sized nanoantennas
We experimentally demonstrate an infrared broadband absorber for TM polarized light based on an array of nanostrip antennas of several different sizes. The broadband property is due to the collective effect of magnetic responses excited by these nano-antennas at distinct wavelengths. By manipulating the differences of the nanostrip widths, the …