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Title: Elevated gold ellipse nanoantenna dimers as sensitive and tunable surface enhanced Raman spectroscopy substrates

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/C5NR08920D· OSTI ID:1319188
 [1];  [1];  [2];  [3];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Environmental Sciences Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)

Here we demonstrate large area arrays of elevated gold ellipse dimers with precisely controlled gaps for use as sensitive and highly controllable surface enhanced Raman scattering (SERS) substrates. The significantly enhanced Raman signal observed with SERS arises from both localized and long range plasmonic effects. By controlling the geometry of a SERS substrate, in this case the size and aspect ratio of individual ellipses, the plasmon resonance can be tuned in a broad wavelength range, providing a method for designing the response of SERS substrates at different excitation wavelengths. Plasmon effects exhibited by the elevated gold ellipse dimer substrates are also demonstrated and confirmed through finite difference time domain (FDTD) simulations. A plasmon resonance red shift with an increase of the ellipse aspect ratio is observed, allowing systematic control of the resulting SERS signal intensity. Optimized elevated ellipse dimer substrates with 10±2 nm gaps exhibit uniform SERS enhancement factors on the order of 109 for adsorbed p-mercaptoaniline molecules.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Organization:
Department of Defense (DOD); Work for Others (WFO); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1319188
Journal Information:
Nanoscale, Vol. 8, Issue 10; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

References (44)

Ultrasensitive Chemical Analysis by Raman Spectroscopy journal October 1999
Nanostructured Plasmonic Sensors journal February 2008
Surface Plasmon Resonance Sensors for Detection of Chemical and Biological Species journal February 2008
Localized Surface Plasmon Resonance Sensors journal June 2011
Surface-Enhanced Raman Scattering of Small Molecules from Silver-Coated Silicon Nanopores journal October 2003
Self-Organized Hexagonal-Nanopore SERS Array journal July 2010
Correlated Structure and Optical Property Studies of Plasmonic Nanoparticles journal April 2011
Perchlorate Detection at Nanomolar Concentrations by Surface-Enhanced Raman Scattering journal January 2009
Raman Spectroscopic Detection for Perchlorate at Low Concentrations journal June 2004
Surface-enhanced Raman scattering for perchlorate detection using cystamine-modified gold nanoparticles journal May 2006
Detection of Alkaline Phosphatase Using Surface-Enhanced Raman Spectroscopy journal May 2006
Development of gold–silica composite nanoparticle substrates for perchlorate detection by surface-enhanced Raman spectroscopy journal May 2006
Surface-enhanced Raman scattering on tunable plasmonic nanoparticle substrates journal December 2004
Surface-Enhanced Raman Scattering from Individual Au Nanoparticles and Nanoparticle Dimer Substrates journal August 2005
Surface-Enhanced Raman Scattering of 4-Aminothiophenol Self-Assembled Monolayers in Sandwich Structure with Nanoparticle Shape Dependence:  Off-Surface Plasmon Resonance Condition journal May 2007
Plasmon resonances of silver nanowires with a nonregular cross section journal November 2001
Langmuir−Blodgett Silver Nanowire Monolayers for Molecular Sensing Using Surface-Enhanced Raman Spectroscopy journal September 2003
Hot Spots in Silver Nanowire Bundles for Surface-Enhanced Raman Spectroscopy journal February 2006
Single Molecule Detection Using Surface-Enhanced Raman Scattering (SERS) journal March 1997
Spectroscopy of Single Hemoglobin Molecules by Surface Enhanced Raman Scattering journal November 1999
Single-molecule and single-nanoparticle SERS: from fundamental mechanisms to biomedical applications journal January 2008
Nanogap-engineerable Raman-active nanodumbbells for single-molecule detection journal December 2009
Fabrication of large area nanoprism arrays and their application for surface enhanced Raman spectroscopy journal March 2008
Silver-based surface enhanced Raman scattering (SERS) substrate fabrication using nanolithography and site selective electroless deposition journal April 2009
Controllable Nanofabrication of Aggregate-like Nanoparticle Substrates and Evaluation for Surface-Enhanced Raman Spectroscopy journal November 2009
Nanofabrication of Densely Packed Metal—Polymer Arrays for Surface-Enhanced Raman Spectrometry journal December 2005
Nanoplasmonics: Classical down to the Nanometer Scale journal February 2012
Optical Nanoantennas for Multiband Surface-Enhanced Infrared and Raman Spectroscopy journal April 2013
Longitudinal and transverse coupling in infrared gold nanoantenna arrays: long range versus short range interaction regimes journal January 2011
Free-Standing Optical Gold Bowtie Nanoantenna with Variable Gap Size for Enhanced Raman Spectroscopy journal December 2010
An integrated portable Raman sensor with nanofabricated gold bowtie array substrates for energetics detection journal January 2011
Exploring the chemical enhancement for surface-enhanced Raman scattering with Au bowtie nanoantennas journal February 2006
Design, Fabrication, and Characterization of Near-IR Gold Bowtie Nanoantenna Arrays journal August 2014
Gold Nanoantennas on a Pedestal for Plasmonic Enhancement in the Infrared journal March 2015
Plasmonic gold mushroom arrays with refractive index sensing figures of merit approaching the theoretical limit journal August 2013
Local Field Enhancement of Pillar Nanosurfaces for SERS journal October 2010
Efficient disc on pillar substrates for surface enhanced Raman spectroscopy journal January 2011
Highly reproducible SERS arrays directly written by inkjet printing journal January 2015
Large Area Metal Nanowire Arrays with Tunable Sub-20 nm Nanogaps journal May 2013
Ultraviolet surface-enhanced Raman scattering at the plasmonic band edge of a metallic grating journal January 2012
Near-Field and Far-Field Sensitivities of LSPR Sensors journal April 2015
Sequentially Self-Assembled Rings-in-Mesh Nanoplasmonic Arrays for Surface-Enhanced Raman Spectroscopy journal July 2015
One-dimensional arrays of nanoshell dimers for single molecule spectroscopy via surface-enhanced raman scattering journal August 2006
On the Universal Scaling Behavior of the Distance Decay of Plasmon Coupling in Metal Nanoparticle Pairs: A Plasmon Ruler Equation journal July 2007

Cited By (7)

Novel Periodic Bilayer Au Nanostructures for Ultrasensitive Surface-Enhanced Raman Spectroscopy journal August 2018
Fabrication of Ag‐modified nanocone frustum arrays with controlled shape as active substrates for surface‐enhanced Raman scattering journal July 2019
Mechanical Deformation–Assisted Fabrication of Plasmonic Nanobowties with Broken Symmetry and Tunable Gaps journal December 2019
Facile synthesis of gold trisoctahedral nanocrystals with controllable sizes and dihedral angles journal January 2018
Highly active Au NP microarray films for direct SERS detection journal January 2019
Sensitive SERS detection at the single-particle level based on nanometer-separated mushroom-shaped plasmonic dimers journal January 2018
Review of SERS Substrates for Chemical Sensing journal June 2017