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Title: Understanding How Acoustic Vibrations Modulate the Optical Response of Plasmonic Metal Nanoparticles

Journal Article · · ACS Nano
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]
  1. California State Univ. Long Beach, Long Beach, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Univ. of Maryland Baltimore County (UMBC), Baltimore, MD (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials

Measurements of acoustic vibrations in nanoparticles provide a unique opportunity to study mechanical phenomena at nanometer length scales and picosecond time scales. Vibrations in noble-metal nanoparticles have attracted particular attention, because they couple to plasmon resonances in the nanoparticles, leading to strong modulation of optical absorption and scattering. There are three mechanisms that transduce the mechanical oscillations into changes in the plasmon resonance: (1) changes in polarizability due to changes in the nanoparticle geometry; (2) changes in electron density due to changes in the nanoparticle volume and (3) changes in the interband transition energies due to compression/expansion of the nanoparticle (deformation potential). These mechanisms have been studied in the past to explain the origin of the experimental signals; however, a thorough quantitative connection between the coupling of phonon and plasmon modes and separate contribution of each coupling mechanism has not yet been made. Here, we present a numerical method to quantitatively determine the coupling between vibrational and plasmon modes in noble-metal nanoparticles of arbitrary geometries, and apply it to spheres, shells, rods, and cubes in the context of time resolved measurements. We separately determine the parts of the optical response that are due to shape changes, changes in electron density, and changes in deformation potential (DP). We further show that coupling is in general strongest when the regions of largest electric field (plasmon mode) and largest displacement (phonon mode) overlap. Lastly, these results clarify reported experimental results, and should help guide future experiments and potential applications.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1405321
Journal Information:
ACS Nano, Vol. 11, Issue 9; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

References (59)

Optical Studies of Dynamics in Noble Metal Nanostructures journal June 2011
Tailoring properties and functionalities of metal nanoparticles through crystallinity engineering journal August 2007
Viscoelastic Flows in Simple Liquids Generated by Vibrating Nanostructures journal December 2013
Compressible Viscoelastic Liquid Effects Generated by the Breathing Modes of Isolated Metal Nanowires journal May 2015
Acoustic Vibrations of Au Nano-Bipyramids and their Modification under Ag Deposition: a Perspective for the Development of Nanobalances journal August 2013
Comparative advantages of mechanical biosensors journal March 2011
Surface-Enhanced Raman Spectroscopy journal July 2008
Surface plasmon resonance sensors: review journal January 1999
Biosensing with plasmonic nanosensors journal June 2008
Localized Surface Plasmon Resonance Spectroscopy and Sensing journal May 2007
Measurements of the material properties of metal nanoparticles by time-resolved spectroscopy journal January 2004
Coherent Excitation of Vibrational Modes in Metallic Nanoparticles journal May 2006
Acoustic Vibration Modes and Electron–Lattice Coupling in Self-Assembled Silver Nanocolumns journal May 2008
Damping of acoustic vibrations in gold nanoparticles journal July 2009
Damping of Acoustic Vibrations of Single Gold Nanoparticles Optically Trapped in Water journal January 2012
Damping of Acoustic Vibrations of Immobilized Single Gold Nanorods in Different Environments journal May 2013
On the Vibrations of an Elastic Sphere journal November 1881
Size dependent properties of Au particles: Coherent excitation and dephasing of acoustic vibrational modes journal November 1999
Mechanical Coupling in Gold Nanoparticles Supermolecules Revealed by Plasmon-Enhanced Ultralow Frequency Raman Spectroscopy journal May 2016
Acoustic vibrations of metal nano-objects: Time-domain investigations journal January 2015
Acousto-plasmonic Hot Spots in Metallic Nano-Objects journal September 2009
Acousto-Plasmonic and Surface-Enhanced Raman Scattering Properties of Coupled Gold Nanospheres/Nanodisk Trimers journal February 2011
Acoustic vibrations of metal nanoparticles: high order radial mode detection journal March 2004
Coherent acoustic mode oscillation and damping in silver nanoparticles journal June 1999
Detection of Acoustic Oscillations of Single Gold Nanospheres by Time-Resolved Interferometry journal December 2005
Vibrational Response of Nanorods to Ultrafast Laser Induced Heating:  Theoretical and Experimental Analysis journal December 2003
Ultrafast Resonant Dynamics of Surface Plasmons in Gold Nanorods journal January 2007
Acoustic Oscillations and Elastic Moduli of Single Gold Nanorods journal October 2008
Ultrasensitive Characterization of Mechanical Oscillations and Plasmon Energy Shift in Gold Nanorods journal January 2016
Coherent Acoustic Vibration of Metal Nanoshells journal January 2007
Structure-Dependent Coherent Acoustic Vibrations of Hollow Gold Nanospheres journal August 2011
Vibrational Dynamics of Silver Nanocubes and Nanowires Studied by Single-Particle Transient Absorption Spectroscopy journal December 2008
Transient Absorption Studies of Single Silver Nanocubes journal April 2008
Time-resolved spectroscopy of silver nanocubes: Observation and assignment of coherently excited vibrational modes journal March 2007
A note on the breathing mode of an elastic sphere in Newtonian and complex fluids journal March 2015
Coherent vibrational motion in metal particles: Determination of the vibrational amplitude and excitation mechanism journal May 2002
Anisotropy effects on the time-resolved spectroscopy of the acoustic vibrations of nanoobjects journal January 2009
A Hybridization Model for the Plasmon Response of Complex Nanostructures journal October 2003
Theory of the optical properties of ionic crystal cubes journal February 1975
Substrate-Induced Fano Resonances of a Plasmonic Nanocube: A Route to Increased-Sensitivity Localized Surface Plasmon Resonance Sensors Revealed journal April 2011
Determination of the Elastic Constants of Gold Nanorods Produced by Seed Mediated Growth journal December 2004
Optical control of the coherent acoustic vibration of metal nanoparticles journal April 2006
Acoustic Vibration of Metal Films and Nanoparticles journal March 2000
Tuning the acoustic frequency of a gold nanodisk through its adhesion layer journal May 2015
Ultrafast acousto-plasmonic control and sensing in complex nanostructures journal June 2014
Acoustic Vibrations in Bimetallic Au@Pd Core–Shell Nanorods journal February 2012
Measurement of the dynamics of plasmons inside individual gold nanoparticles using a femtosecond phase-resolved microscope journal June 2012
Acoustic Phonons in Nanowires with Embedded Heterostructures journal January 2011
Probing Elasticity at the Nanoscale: Terahertz Acoustic Vibration of Small Metal Nanoparticles journal May 2010
Acoustic modes in metallic nanoparticles: Atomistic versus elasticity modeling journal July 2009
Damping by Bulk and Shear Viscosity of Confined Acoustic Phonons for Nanostructures in Aqueous Solution journal June 2007
Optical dielectric function of silver journal June 2015
Optical dielectric function of gold journal December 2012
Piezo-optical constants of gold journal October 1974
Probing Dynamic Generation of Hot-Spots in Self-Assembled Chains of Gold Nanorods by Surface-Enhanced Raman Scattering journal May 2011
Pressure dependence of the d -band to Fermi-level excitation threshold in silver journal May 1984
Surface plasmon mediated Raman scattering in metal nanoparticles journal May 2004
Vibrations of spherical core-shell nanoparticles journal May 2011
Ultrafast Nonlinear Optical Response of a Single Gold Nanorod near Its Surface Plasmon Resonance journal July 2011

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