Anomalous field enhancement from the superfocusing of surface plasmons at contacting silver surfaces

2002 ◽  
Vol 91 (5) ◽  
pp. 2965-2968 ◽  
Author(s):  
A. A. Lalayan ◽  
K. S. Bagdasaryan ◽  
P. G. Petrosyan ◽  
Kh. V. Nerkararyan ◽  
J. B. Ketterson
Keyword(s):  
Surface Plasmons ◽  
Field Enhancement ◽  
Anomalous Field ◽  
Silver Surfaces

Plasmonics for Nanoimaging and Nanospectroscopy

2013 ◽  
Vol 67 (2) ◽  
pp. 117-125 ◽  
Author(s):  
Satoshi Kawata
Keyword(s):  
Surface Plasmons ◽  
Noble Metals ◽  
Slow Light ◽  
Near Field ◽  
Field Enhancement ◽  
Historical Overview ◽  
Light Effect ◽  
Photon Confinement ◽  
Plasmon Polaritons ◽  
Effect Of Surface

The science of surface plasmon polaritons, known as “plasmonics,” is reviewed from the viewpoint of applied spectroscopy. In this discussion, noble metals are regarded as reservoirs of photons exhibiting the functions of photon confinement and field enhancement at metallic nanostructures. The functions of surface plasmons are described in detail with an historical overview, and the applications of plasmonics to a variety of industry and sciences are shown. The slow light effect of surface plasmons is also discussed for nanoimaging capability of the near-field optical microscopy and tip-enhanced Raman microscopy. The future issues of plasmonics are also shown, including metamaterials and the extension to the ultraviolet and terahertz regions.

Scanning Probe Microscopy of Surface Plasmons

1997 ◽  
Vol 11 (21) ◽  
pp. 2465-2510 ◽  
Author(s):  
Igor I. Smolyaninov
Keyword(s):  
Surface Plasmons ◽  
Local Field ◽  
Electromagnetic Waves ◽  
Light Emission ◽  
Near Field ◽  
Field Enhancement ◽  
Weak Localization ◽  
Scanning Probe ◽  
Scanning Tunneling ◽  
Tunneling Microscopy

Recent development of novel scanning probe techniques such as Scanning Tunneling Microscopy (STM), Atomic Force Microscopy (AFM), and Near-Field Optical Microscopy (NFOM) has opened new ways to study local field distribution of surface electromagnetic waves. A lot of experimental efforts have been concentrated on the study of surface plasmons (SP). Different techniques allow to excite and probe SPs with wavelengths from 1 nm down to the optical range along its entire dispersion curve. Large number of phenomena have been studied directly, such as SP scattering by individual defects, strong and weak localization of SP, SP induced local field enhancement, light emission from the tunneling junction, etc. Scanning probe techniques allow not only topography and field mapping but also surface modification and lithography on the nanometer scale. Combination of these features in the same experimental setup proved to be extremely useful in SP studies. For example, some prototype two dimensional optical elements able to control SP propagation have been demonstrated.

scholarly journals Tight focus and field enhancement of terahertz waves using a probe based on spoof surface plasmons

2020 ◽  
Vol 69 (5) ◽  
pp. 054201
Author(s):  
Xiao-Lei Wang ◽  
Jie-Hui Zhao ◽  
Miao Li ◽  
Guang-Ke Jiang ◽  
Xiao-Xue Hu ◽  
...  
Keyword(s):  
Surface Plasmons ◽  
Field Enhancement ◽  
Terahertz Waves ◽  
Tight Focus

Anomalous Field Enhancement in Planar Semiconducting Cold Cathodes from Spontaneous Ordering in the Accumulation Region

2000 ◽  
Vol 621 ◽  
Author(s):  
Griff L. Bilbro ◽  
Robert J. Nemanich
Keyword(s):  
Electron Affinity ◽  
Equations Of Motion ◽  
Field Enhancement ◽  
Wide Band ◽  
Analytic Approximation ◽  
Wide Band Gap ◽  
Accumulation Layer ◽  
Anomalous Field ◽  
Cold Cathodes ◽  
The Stability

ABSTRACTWide band gap semiconductors exhibit a low electron affinity and may prove suitable for cold cathode applications. We introduce a simple closed-form analytic approximation for the stability of electrons in the electron accumulation layer of planar Low Electron Affinity (LEA) semiconducting cathodes. This analysis extends our previous results, which used Runge-Kutta numerical integration of the linearized equations of motion for the electric potential and quasi Fermi level. The model shows conditions in which the electrons in the accumulation layer form a two dimensional array of regions of higher and lower electron density. This instability could lead to field enhancement without surface roughness and could account for observed electron emission at low applied fields.

scholarly journals Experimental Demonstration of Anomalous Field Enhancement in All-Dielectric Transition Magnetic Metamaterials

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Jingbo Sun ◽  
Xiaoming Liu ◽  
Ji Zhou ◽  
Zhaxylyk Kudyshev ◽  
Natalia M. Litchinitser
Keyword(s):  
Field Enhancement ◽  
Experimental Demonstration ◽  
Anomalous Field ◽  
Dielectric Transition
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