Quantitative measurements of individual gold nanoparticle scattering cross sections

Lindsey J.E. Anderson; Kathryn M. Mayer; Robert D. Fraleigh; Yi Yang; Seunghyun Lee; Jason H. Hafner

doi:10.1021/jp1040663

Quantitative measurements of individual gold nanoparticle scattering cross sections

Lindsey J.E. Anderson, Kathryn M. Mayer, Robert D. Fraleigh, Yi Yang, Seunghyun Lee, Jason H. Hafner

Applied Research Laboratory (ARL)

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

Dark field microspectroscopy is a powerful tool for studying plasmon resonances of noble metal nanoparticles and for developing their applications in sensing and imaging. Here we calibrate a dark field microspectrometer with measurements on gold nanospheres in a uniform dielectric medium to yield quantitative spectral scattering cross sections for elongated nanoparticle shapes. Gold bipyramids, 135 nm in length, were found to have a peak differential cross section of 1.2 × 10^-16 m². Measurements of a small ensemble of gold nanorods, 13 nm in diameter and 45 nm in length on average, were found to have a peak differential cross section of only 1 × 10^-18 m². For the smaller gold nanorods, approximate expressions for the total scattering cross section may be used to indicate their scattering signal in microscopy applications.

Original language	English (US)
Pages (from-to)	11127-11132
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	114
Issue number	25
DOIs	https://doi.org/10.1021/jp1040663
State	Published - Jul 1 2010

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp1040663

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title = "Quantitative measurements of individual gold nanoparticle scattering cross sections",

abstract = "Dark field microspectroscopy is a powerful tool for studying plasmon resonances of noble metal nanoparticles and for developing their applications in sensing and imaging. Here we calibrate a dark field microspectrometer with measurements on gold nanospheres in a uniform dielectric medium to yield quantitative spectral scattering cross sections for elongated nanoparticle shapes. Gold bipyramids, 135 nm in length, were found to have a peak differential cross section of 1.2 × 10-16 m2. Measurements of a small ensemble of gold nanorods, 13 nm in diameter and 45 nm in length on average, were found to have a peak differential cross section of only 1 × 10-18 m2. For the smaller gold nanorods, approximate expressions for the total scattering cross section may be used to indicate their scattering signal in microscopy applications.",

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T1 - Quantitative measurements of individual gold nanoparticle scattering cross sections

AU - Anderson, Lindsey J.E.

AU - Mayer, Kathryn M.

AU - Fraleigh, Robert D.

AU - Yang, Yi

AU - Lee, Seunghyun

AU - Hafner, Jason H.

PY - 2010/7/1

Y1 - 2010/7/1

N2 - Dark field microspectroscopy is a powerful tool for studying plasmon resonances of noble metal nanoparticles and for developing their applications in sensing and imaging. Here we calibrate a dark field microspectrometer with measurements on gold nanospheres in a uniform dielectric medium to yield quantitative spectral scattering cross sections for elongated nanoparticle shapes. Gold bipyramids, 135 nm in length, were found to have a peak differential cross section of 1.2 × 10-16 m2. Measurements of a small ensemble of gold nanorods, 13 nm in diameter and 45 nm in length on average, were found to have a peak differential cross section of only 1 × 10-18 m2. For the smaller gold nanorods, approximate expressions for the total scattering cross section may be used to indicate their scattering signal in microscopy applications.

AB - Dark field microspectroscopy is a powerful tool for studying plasmon resonances of noble metal nanoparticles and for developing their applications in sensing and imaging. Here we calibrate a dark field microspectrometer with measurements on gold nanospheres in a uniform dielectric medium to yield quantitative spectral scattering cross sections for elongated nanoparticle shapes. Gold bipyramids, 135 nm in length, were found to have a peak differential cross section of 1.2 × 10-16 m2. Measurements of a small ensemble of gold nanorods, 13 nm in diameter and 45 nm in length on average, were found to have a peak differential cross section of only 1 × 10-18 m2. For the smaller gold nanorods, approximate expressions for the total scattering cross section may be used to indicate their scattering signal in microscopy applications.

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Quantitative measurements of individual gold nanoparticle scattering cross sections

Abstract

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