Journal ArticleDOI
Localized surface plasmon resonance spectroscopy of single silver nanocubes
Leif J. Sherry,Shih-Hui Chang,George C. Schatz,Richard P. Van Duyne,Benjamin J. Wiley,Younan Xia +5 more
TLDR
In this work, dark-field microscopy is used to observe a new plasmon resonance effect for a single silver nanocube in which the plAsmon line shape has two distinct peaks when the particles are located on a glass substrate.Abstract:
In this work, we use dark-field microscopy to observe a new plasmon resonance effect for a single silver nanocube in which the plasmon line shape has two distinct peaks when the particles are located on a glass substrate. The dependence of the resonance on nanocube size and shape is characterized, and it is found that the bluer peak has a higher figure of merit for chemical sensing applications than that for other particle shapes that have been studied previously. Comparison of the measured results with finite difference time domain (FDTD) electrodynamics calculations enables us to confirm the accuracy of our spectral assignments.read more
Citations
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Journal ArticleDOI
Localized Surface Plasmon Resonance Spectroscopy and Sensing
TL;DR: This review describes recent fundamental spectroscopic studies that reveal key relationships governing the LSPR spectral location and its sensitivity to the local environment, including nanoparticle shape and size and introduces a new form of L SPR spectroscopy, involving the coupling between nanoparticle plasmon resonances and adsorbate molecular resonances.
Journal ArticleDOI
Localized Surface Plasmon Resonance Sensors
Kathryn M. Mayer,Jason H. Hafner +1 more
Journal ArticleDOI
Shell-isolated nanoparticle-enhanced Raman spectroscopy
Jian-Feng Li,Yi-Fan Huang,Yong（ Georgia Inst Technol Sch Mat Sci Engn） Ding,Zhilin Yang,Song Bo Li,Xiao-Shun Zhou,Fengru Fan,Fengru Fan,Wei Zhang,Zhi-You Zhou,De-Yin Wu,Bin Ren,Zhong Lin（ Georgia Inst Technol Sch Mat Sci Engn） Wang,Zhong-Qun Tian +13 more
TL;DR: Shell-isolated nanoparticle-enhanced Raman spectroscopy is reported, in which the Raman signal amplification is provided by gold nanoparticles with an ultrathin silica or alumina shell, which significantly expands the flexibility of SERS for useful applications in the materials and life sciences, as well as for the inspection of food safety, drugs, explosives and environment pollutants.
Journal ArticleDOI
Plasmons in strongly coupled metallic nanostructures.
Journal ArticleDOI
Controlling the synthesis and assembly of silver nanostructures for plasmonic applications
Matthew Rycenga,Claire M. Cobley,Jie Zeng,Weiyang Li,Christine H. Moran,Qiang Zhang,Dong Qin,Younan Xia +7 more
TL;DR: In plasmonics, the metal nanostructures can serve as antennas to convert light into localized electric fields (E-fields) or as waveguides to route light to desired locations with nanometer precision through a strong interaction between incident light and free electrons in the nanostructure.
References
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Journal ArticleDOI
The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
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Nanosphere Lithography: A Versatile Nanofabrication Tool for Studies of Size-Dependent Nanoparticle Optics
TL;DR: The use of localized surface plasmon resonance (LSPR) spectroscopy to probe the size-tunable optical properties of Ag nanoparticles and their sensitivity to the local, external dielectric environment (viz., the nanoenvironment) is discussed in this article.
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Single Silver Nanoparticles as Real-Time Optical Sensors with Zeptomole Sensitivity
TL;DR: In this article, the authors demonstrate the localized surface plasmon resonance λmax response of individual Ag nanoparticles to the formation of a monolayer of small-molecule adsorbates.
Journal ArticleDOI
Surface-Plasmon Resonances in Single Metallic Nanoparticles
TL;DR: In this paper, the authors measured the homogeneous line shape of the surface-plasmon resonance in single gold nanoparticles and observed double-peaked line shapes caused by electromagnetic coupling between close-lying particles.