Plasmonic photonic crystals realized through DNA-programmable assembly

Daniel J. Park, Chuan Zhang, Jessie C. Ku, Yu Zhou, George C. Schatz, Chad A. Mirkin

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Three-dimensional dielectric photonic crystals have well-established enhanced light-matter interactions via high Q factors. Their plasmonic counterparts based on arrays of nanoparticles, however, have not been experimentally well explored owing to a lack of available synthetic routes for preparing them. However, such structures should facilitate these interactions based on the small mode volumes associated with plasmonic polarization. Herein we report strong light-plasmon interactions within 3D plasmonic photonic crystals that have lattice constants and nanoparticle diameters that can be independently controlled in the deep subwavelength size regime by using a DNA-programmable assembly technique. The strong coupling within such crystals is probed with backscattering spectra, and the mode splitting (0.10 and 0.24 eV) is defined based on dispersion diagrams. Numerical simulations predict that the crystal photonic modes (Fabry-Perot modes) can be enhanced by coating the crystals with a silver layer, achieving moderate Q factors (∼102) over the visible and near-infrared spectrum.

Original languageEnglish
Pages (from-to)977-981
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume112
Issue number4
DOIs
Publication statusPublished - Jan 27 2015

    Fingerprint

Keywords

  • 3D photonic crystals
  • DNA-programmable assembly
  • Deep subwavelength scale
  • Plasmonics
  • Strong coupling

ASJC Scopus subject areas

  • General

Cite this