Transmissive/Reflective Structural Color Filters: Theory and Applications
Figure 1
Metallic circular hole array transmissive color filters. (a) A SEM image of a hole array in aluminum at a period of 410 nm. (b) Images of hole arrays in different periods taken in microscope transmission mode under a white light illumination. (c) Transmissive spectra of the arrays shown in (b). (d) Wavelengths at the transmission peaks versus the period [17]. (e) Full-color images in microscope transmission mode. Inset is a patterned letter “G” with a 1-μm-wide line showing green color. (f) SEM image of a section of the fabricated logo pattern. The inset is the enlarged microscope image [18].
