Title: Plasmonic photonic crystals realized through DNA-programmable assembly

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.

Authors:

Park, Daniel J. ^[1]; Zhang, Chuan ^[1]; Ku, Jessie C. ^[2]; Zhou, Yu ^[2]; Schatz, George C. ^[1]; Mirkin, Chad A. ^[3]

---

+ Show Author Affiliations

1. Departments of aChemistry and, International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208
2. Materials Science and Engineering and, International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208
3. Departments of aChemistry and, Materials Science and Engineering and, International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208

Publication Date:

Mon Dec 29 00:00:00 EST 2014

Research Org.:

Energy Frontier Research Centers (EFRC) (United States). Center for Bio-Inspired Energy Science (CBES); Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

OSTI Identifier:

1235151

Alternate Identifier(s):

OSTI ID: 1260844

Grant/Contract Number:  

SC0000989; AC02-06CH11357

Resource Type:

Published Article

Journal Name:

Proceedings of the National Academy of Sciences of the United States of America

Additional Journal Information:

Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 112 Journal Issue: 4; Journal ID: ISSN 0027-8424

Publisher:

Proceedings of the National Academy of Sciences

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; DNA-programmable assembly; 3D photonic crystals; plasmonics; deep subwavelength scale; strong coupling