نتایج جستجو برای: localized plasmon

تعداد نتایج: 118565  

Journal: :Nanotechnology 2010
G B Smith A A Earp

Anomalous strong resonances in silver and gold nanoporous thin films which conduct are found to arise from isolated metal nano-islands separated from the surrounding percolating metal network by a thin loop of insulator. This observed resonant optical response is modelled. The observed peak position is in agreement with the observed average dimensions of the silver core and insulator shell. As ...

Journal: :Chemical communications 2012
Wei-Wei Zhao Chun-Yuan Tian Jing-Juan Xu Hong-Yuan Chen

Visible light-activated localized surface plasmon resonance-based photoelectrochemical detection is reported for the first time.

2017
R. H. Ritchie R. N. Hamm J. E. Turner H. A. Wright J. C. Ashley

A plasmon generated by a swift charged particle constitutes a coherent excitation about the particle track. We discuss the physics of the plasmon in conden~ed m.atter and its e~ects on ele~tr?n transport in liquid water. Criteria for the existence of the plasmon III a given substance, Its chara~teflsttcs when generated by a swift charged particle, its representation in impact parameter space, a...

Journal: :Optics letters 2013
Seong Min Lee Kyung Cheol Choi

We elucidated the distance-dependent plasmonic effects on radiative transitions from an Eu(3+) ion-doped phosphor by varying the thickness of the dielectric spacer. Magnesium oxide prepared by electron-beam evaporation was chosen for the dielectric spacer. Spectral overlap between emission from Eu(3+) ions and the plasmon band of Ag nanoparticles led to improved luminescence intensity. This lum...

2012
M. Kang J. -J. Kim K.-H. Jeong

Localized surface plasmon resonance (LSPR) is strongly associated with inelastic scattering of biochemical molecules near metal nanostructures, i.e., surface enhanced Raman scattering (SERS). Systematically exploration of the relationship between surface-enhanced Raman spectroscopy (SERS) and the plasmon resonance wavelength has been an experimental limitation due to the lack of reliable and tu...

Journal: :Nano letters 2012
Viktor Myroshnychenko Jaysen Nelayah Giorgio Adamo Nicolas Geuquet Jessica Rodríguez-Fernández Isabel Pastoriza-Santos Kevin F MacDonald Luc Henrard Luis M Liz-Marzán Nikolay I Zheludev Mathieu Kociak F Javier García de Abajo

Imaging localized plasmon modes in noble-metal nanoparticles is of fundamental importance for applications such as ultrasensitive molecular detection. Here, we demonstrate the combined use of optical dark-field microscopy (DFM), cathodoluminescence (CL), and electron energy-loss spectroscopy (EELS) to study localized surface plasmons on individual gold nanodecahedra. By exciting surface plasmon...

Journal: :Optics express 2009
Arthur R Davoyan Ilya V Shadrivov Yuri S Kivshar

We analyze phase matching in metal-dielectric nonlinear structures which support highly localized plasmon polariton modes. We reveal that quadratic phase matching between the plasmon modes of different symmetries becomes possible in planar waveguide geometries. We discuss the example of a nonlinear LiNbO(3) waveguide sandwiched between two silver plates, and demonstrate that second-harmonic gen...

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