Aluminum plasmonics based highly transmissive polarization-independent subtractive color filters exploiting a nanopatch array

Vivek R. Shrestha, Sang Shin Lee*, Eun Soo Kim, Duk Yong Choi

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    205 Citations (Scopus)

    Abstract

    Nanophotonic devices enabled by aluminum plasmonics are saliently advantageous in terms of their low cost, outstanding sustainability, and affordable volume production. We report, for the first time, aluminum plasmonics based highly transmissive polarization-independent subtractive color filters, which are fabricated just with single step electron-beam lithography. The filters feature selective suppression in the transmission spectra, which is realized by combining the propagating and nonpropagating surface plasmons mediated by an array of opaque and physically thin aluminum nanopatches. A broad palette of bright, high-contrast subtractive colors is successfully demonstrated by simply varying the pitches of the nanopatches. These subtractive color filters have twice the photon throughput of additive counterparts, ultimately providing elevated optical transmission and thus stronger color signals. Moreover, the filters are demonstrated to conspicuously feature a dual-mode operation, both transmissive and reflective, in conjunction with a capability to exhibit micron-scale colors in arbitrary shapes. They are anticipated to be diversely applied to digital display, digital imaging, color printing, and sensing.

    Original languageEnglish
    Pages (from-to)6672-6678
    Number of pages7
    JournalNano Letters
    Volume14
    Issue number11
    DOIs
    Publication statusPublished - 12 Nov 2014

    Fingerprint

    Dive into the research topics of 'Aluminum plasmonics based highly transmissive polarization-independent subtractive color filters exploiting a nanopatch array'. Together they form a unique fingerprint.

    Cite this