scholarly journals Nanofocusing of Surface Plasmons at the Apex of Metallic Tips and at the Sharp Metallic Wedges. Importance of Electric Field Singularity

10.5772/13907 ◽  
2011 ◽  
Author(s):  
Andrey Petrin
Keyword(s):  
Electric Field ◽  
Surface Plasmons ◽  
Field Singularity

Ultrafast vector imaging of plasmonic skyrmion dynamics with deep subwavelength resolution

Science ◽  
2020 ◽  
Vol 368 (6489) ◽  
pp. eaba6415 ◽  
Author(s):  
Timothy J. Davis ◽  
David Janoschka ◽  
Pascal Dreher ◽  
Bettina Frank ◽  
Frank-J. Meyer zu Heringdorf ◽  
...  
Keyword(s):  
Electric Field ◽  
Surface Plasmons ◽  
Near Field ◽  
Topological Defects ◽  
Time Resolved ◽  
Time Dynamics ◽  
Continuous Vector Field ◽  
Dynamic Spin ◽  
Vector Structure ◽  
Momentum Coupling

Plasmonic skyrmions are an optical manifestation of topological defects in a continuous vector field. Identifying them requires characterization of the vector structure of the electromagnetic near field on thin metal films. Here we introduce time-resolved vector microscopy that creates movies of the electric field vectors of surface plasmons with subfemtosecond time steps and a 10-nanometer spatial scale. We image complete time sequences of propagating surface plasmons as well as plasmonic skyrmions, resolving all vector components of the electric field and their time dynamics, thus demonstrating dynamic spin-momentum coupling as well as the time-varying skyrmion number. The ability to image linear optical effects in the spin and phase structures of light in the single-nanometer range will allow for entirely novel microscopy and metrology applications.

scholarly journals Electric Field Singularity Assisted Nanopatterning

2004 ◽  
Vol 16 (1) ◽  
pp. 76-80 ◽  
Author(s):  
N. Ravishankar ◽  
V. B. Shenoy ◽  
C. B. Carter
Keyword(s):  
Electric Field ◽  
Field Singularity

The effect of an external quantum electric field on the surface plasmons of a nano-system

Optik ◽  
2015 ◽  
Vol 126 (1) ◽  
pp. 101-106 ◽  
Author(s):  
T. Ghannam ◽  
Ahmed Mohamed El-Toni
Keyword(s):  
Electric Field ◽  
Surface Plasmons

Computational electromagnetics in plasmonic nanostructures

2021 ◽  
Author(s):  
Amirmostafa Amirjani ◽  
Sayed Khatiboleslam Sadrnezhaad
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Raman Scattering ◽  
Surface Plasmons ◽  
Computational Electromagnetics ◽  
Plasmonic Nanostructures ◽  
Localized Surface Plasmons ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Plasmonic nanostructures have emerging applications in solar cells, photodynamic therapies, surface-enhanced Raman scattering detection, and photocatalysis due to the excitation of localized surface plasmons. The exciting electric field results from...

Resolution in photoelectron microscopy

1991 ◽  
Vol 49 ◽  
pp. 458-459
Author(s):  
G. F. Rempfer
Keyword(s):  
Electron Microscopy ◽  
Electric Field ◽  
Ultraviolet Light ◽  
Uniform Field ◽  
Virtual Image ◽  
Lens System ◽  
Photoemission Electron Microscopy ◽  
Planar Electrode ◽  
Electron Lens ◽  
Photoemission Electron

In photoelectron microscopy (PEM), also called photoemission electron microscopy (PEEM), the image is formed by electrons which have been liberated from the specimen by ultraviolet light. The electrons are accelerated by an electric field before being imaged by an electron lens system. The specimen is supported on a planar electrode (or the electrode itself may be the specimen), and the accelerating field is applied between the specimen, which serves as the cathode, and an anode. The accelerating field is essentially uniform except for microfields near the surface of the specimen and a diverging field near the anode aperture. The uniform field forms a virtual image of the specimen (virtual specimen) at unit lateral magnification, approximately twice as far from the anode as is the specimen. The diverging field at the anode aperture in turn forms a virtual image of the virtual specimen at magnification 2/3, at a distance from the anode of 4/3 the specimen distance. This demagnified virtual image is the object for the objective stage of the lens system.

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