title: Plasmonic cavity-apertures as dynamic pixels for the simultaneous control of colour and intensity.
abstract: Despite steady technological progress, displays are still subject to inherent limitations in resolution improvement and pixel miniaturization because a series of colours is generally expressed by a combination of at least three primary colour pixels. Here we propose a structure comprising a metal cavity and a nanoaperture, which we refer to as a cavity-aperture, to simultaneously control the colour and intensity of transmitted light in a single pixel. The metal cavity constructs plasmonic standing waves to organize the spatial distribution of amplitudes according to wavelength, and the nanoaperture permits light with a specific wavelength and amplitude to pass through it, depending on the nanoaperature's relative position in the cavity and the polarization state of the incident light. Therefore, the cavity-aperture has the potential to function as a dynamic colour pixel. This design method may be helpful in developing various photonic devices, such as micro-imaging systems and multiplexed sensors.
authors.affiliation: National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
authors.forename: Hansik
authors.initials: H
authors.lastname: Yun
authors.affiliation: National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
authors.forename: Seung-Yeol
authors.initials: SY
authors.lastname: Lee
authors.affiliation: National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
authors.forename: Keehoon
authors.identifier: 0000000173251036
authors.initials: K
authors.lastname: Hong
authors.affiliation: National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
authors.forename: Jiwoon
authors.initials: J
authors.lastname: Yeom
authors.affiliation: National Creative Research Center for Active Plasmonics Application Systems, Inter-University Semiconductor Research Center and School of Electrical Engineering, Seoul National University, Seoul 151-744, Republic of Korea.
authors.forename: Byoungho
authors.initials: B
authors.lastname: Lee