Abstract
The plasmonic properties of noble metal nanoparticles have potential uses in a wide variety of technologies, particularly sensing devices, based on their optical response. To better understand how nanoparticles can be incorporated in such devices, the detailed relationship between the optical response and structural properties of single nanoparticles is needed. Here we demonstrate that correlated localized surface plasmon resonance (LSPR) spectroscopy and high-resolution transmission electron microscopy (HRTEM) measurements can be used to obtain the optical response and detailed structural information for a single nanoparticle, using a silver (Ag) nanocube as the example. By carefully incorporating the HRTEM structural details into finite-difference time-domain (FDTD) electrodynamics calculations, excellent agreement with the LSPR measurements is obtained. The FDTD calculations show strong sensitivity between the nanocube optical response and the face-to-face width, corner and side rounding, and substrate of each cube, so careful determination of these parameters (1 nm resolution) is needed if theory and experiment are to match. In addition, the comparison of theory and experiment enables us to study the relative merits of the Johnson and Christy and Lynch and Hunter Ag dielectric data for describing perfect crystalline nanoparticles.
| Original language | English |
|---|---|
| Pages (from-to) | 2731-2735 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry C |
| Volume | 113 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Feb 19 2009 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
Cite this
Correlating the Structure, Optical Spectra, and Electrodynamics of Single Silver Nanocubes. / McMahon, Jeffrey M.; Wang, Yingmin; Sherry, Leif J.; Van Duyne, Richard P.; Marks, Laurence D.; Gray, Stephen K.; Schatz, George C.
In: Journal of Physical Chemistry C, Vol. 113, No. 7, 19.02.2009, p. 2731-2735.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Correlating the Structure, Optical Spectra, and Electrodynamics of Single Silver Nanocubes
AU - McMahon, Jeffrey M.
AU - Wang, Yingmin
AU - Sherry, Leif J.
AU - Van Duyne, Richard P.
AU - Marks, Laurence D.
AU - Gray, Stephen K.
AU - Schatz, George C
PY - 2009/2/19
Y1 - 2009/2/19
N2 - The plasmonic properties of noble metal nanoparticles have potential uses in a wide variety of technologies, particularly sensing devices, based on their optical response. To better understand how nanoparticles can be incorporated in such devices, the detailed relationship between the optical response and structural properties of single nanoparticles is needed. Here we demonstrate that correlated localized surface plasmon resonance (LSPR) spectroscopy and high-resolution transmission electron microscopy (HRTEM) measurements can be used to obtain the optical response and detailed structural information for a single nanoparticle, using a silver (Ag) nanocube as the example. By carefully incorporating the HRTEM structural details into finite-difference time-domain (FDTD) electrodynamics calculations, excellent agreement with the LSPR measurements is obtained. The FDTD calculations show strong sensitivity between the nanocube optical response and the face-to-face width, corner and side rounding, and substrate of each cube, so careful determination of these parameters (1 nm resolution) is needed if theory and experiment are to match. In addition, the comparison of theory and experiment enables us to study the relative merits of the Johnson and Christy and Lynch and Hunter Ag dielectric data for describing perfect crystalline nanoparticles.
AB - The plasmonic properties of noble metal nanoparticles have potential uses in a wide variety of technologies, particularly sensing devices, based on their optical response. To better understand how nanoparticles can be incorporated in such devices, the detailed relationship between the optical response and structural properties of single nanoparticles is needed. Here we demonstrate that correlated localized surface plasmon resonance (LSPR) spectroscopy and high-resolution transmission electron microscopy (HRTEM) measurements can be used to obtain the optical response and detailed structural information for a single nanoparticle, using a silver (Ag) nanocube as the example. By carefully incorporating the HRTEM structural details into finite-difference time-domain (FDTD) electrodynamics calculations, excellent agreement with the LSPR measurements is obtained. The FDTD calculations show strong sensitivity between the nanocube optical response and the face-to-face width, corner and side rounding, and substrate of each cube, so careful determination of these parameters (1 nm resolution) is needed if theory and experiment are to match. In addition, the comparison of theory and experiment enables us to study the relative merits of the Johnson and Christy and Lynch and Hunter Ag dielectric data for describing perfect crystalline nanoparticles.
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U2 - 10.1021/jp8098736
DO - 10.1021/jp8098736
M3 - Article
VL - 113
SP - 2731
EP - 2735
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 7
ER -