Results 231 to 240 of about 43,771 (282)

Optimized Selenium‐Doped Nanocomposites for Enhanced Polymer Gel Performance in Permeability Reduction

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Excessive water production in mature oil fields necessitates robust shut‐off treatments, yet conventional polymer gels often fail under high‐temperature and high‐salinity conditions. This study aims to enhance gel thermal stability and mechanical strength by incorporating selenium‐doped Ag/AgO–ZnO nanocomposites synthesized via a novel green ...
Fadhil F. Sead   +8 more
wiley   +1 more source

Metasurfaces with Enhanced Optomechanical Coupling through the Colocalization of Plasmonic and Acoustic Fields. [PDF]

open access: yesACS Nano
Dhiman AK   +6 more
europepmc   +1 more source

Surface plasmon subwavelength optics

Nature, 2003
Surface plasmons are waves that propagate along the surface of a conductor. By altering the structure of a metal's surface, the properties of surface plasmons--in particular their interaction with light--can be tailored, which offers the potential for developing new types of photonic device. This could lead to miniaturized photonic circuits with length
Barnes, William   +2 more
openaire   +5 more sources

Surface plasmon immunoassay

Applied Optics, 1990
The most sensitive existing assays used to determine antibody levels in blood serum samples require a tracer material, e.g., radioisotope, fluorofore, or enzyme, to identify the specific analyte. Surface plasmon spectroscopy has been applied recently as a no-label technique for the assay of specific antibody solutions with the antigen proteins ...
E, Fontana, R H, Pantell, S, Strober
openaire   +2 more sources

Surface plasmon interferometry: measuring group velocity of surface plasmons

Optics Letters, 2007
Optical transmission spectroscopy on metal films with slit-groove pairs is conducted. Spectra of the light transmitted through the slit exhibit Fabry-Perot-type interference fringes due to surface plasmons propagating between the slit and the groove. The spectral dependence of the period of interference fringes is used to determine the group velocity ...
Vasily V, Temnov   +4 more
openaire   +2 more sources

Surface plasmon

2022
Abstract In this chapter, the classical Drude model is used to understand the basic mechanism of plasma wave generation and sub-wavelength propagation, the concept of plasma frequency, the nature of variation of dielectric function, the dispersion relation of surface plasmons in metal-insulator and metal-insulator-metal structures ...
Prasanta Kumar Basu   +2 more
openaire   +1 more source

Surface Plasmons and Singularities

Nano Letters, 2010
We apply the conformal transformation technique to study systematically a variety of singular plasmonic structures, including two-dimensional sharp edges, rough surfaces, and nanocrescents. These structures are shown to exhibit two distinct features.
Yu, Luo, J B, Pendry, Alexandre, Aubry
openaire   +2 more sources

Surface plasmon photonics

Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004., 2006
Summary form only given. With modern nanofabrication techniques, surface plasmons can be engineered and controlled to yield unique optical properties which suggest many applications. This potential is well illustrated by the surface plasmon induced novel properties of subwavelength apertures.
openaire   +8 more sources

Surface plasmon rainbow jets

Optics Letters, 2005
A new method for optically exciting and visualizing surface plasmons in thin metal films is described. The technique relies on the use of a high-numerical-aperture objective lens to locally launch a broad wavelength spectrum of surface waves and to detect the leaky radiative modes associated with them.
A, Bouhelier, G P, Wiederrecht
openaire   +2 more sources

Surface Plasmons and Plasmonics

2020
Surface plasmons (SPs) correspond to self-sustaining excitations of the electron gas of metals or semiconductors, i. e., to modulations of the density of such gas occurring at the surface of the body generating electric fields propagating along the surface and decaying exponentially perpendicular to it.
openaire   +2 more sources

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