PLASMONIC COLOR FILTERS

Plasmon-assisted color filtering devices have drawn increasing attention recently, thanks to their great potential for ultrahigh resolution display technology. In this paper, both transmission and reflection type color filters based on tuning surface plasmon resonance will be summarized. Transmission type color filters using nanohole arrays, nanoslits with grooves, metal-insulator-metal gratings and coaxial apertures will be reviewed first. Then reflective color filters using nanorods with ultrasmall separations will be discussed briefly. We believe more practical achievements of plasmon-based devices will be readily realized in the near future.