Results 11 to 20 of about 1,496 (214)

A Review on Surface-Enhanced Raman Scattering

open access: yesBiosensors, 2019
Surface-enhanced Raman scattering (SERS) has become a powerful tool in chemical, material and life sciences, owing to its intrinsic features (i.e., fingerprint recognition capabilities and high sensitivity) and to the technological advancements that have
Roberto Pilot   +5 more
doaj   +1 more source

Investigation of Resonance Avoidance Method for Vacuum Cleaner

open access: yesIEEE Open Journal of Industry Applications, 2023
Electromagnetic resonance in electric motors arises when the electromagnetic force frequency coincides with any of the motor's natural frequencies, causing excessive vibration and noise.
Woong Hwang   +4 more
doaj   +1 more source

Metamaterials: electromagnetic enhancement at zero-index transition [PDF]

open access: yesOptics Letters, 2008
Resonant enhancement of electromagnetic waves propagating at oblique incidence in metamaterials, with dielectric permittivity and magnetic permeability linearly changing from positive to negative values, has been predicted and theoretically studied. This effect occurs for both TE and TM polarizations near the point where a refractive index changes its ...
Litchinitser, Natalia M   +4 more
openaire   +3 more sources

Electromagnetic field enhancement in Bloch surface waves [PDF]

open access: yesPhysical Review B, 2017
We present a systematic comparison between guided modes supported by slab waveguides and Bloch Surface Waves (BSWs) propagating at the surface of truncated periodic multilayers. We show that, contrary to common belief, the best surface field enhancement achievable for guided modes in a slab waveguide is comparable to that observed for BSWs. At the same
AURELIO, DANIELE, Liscidini, Marco
openaire   +3 more sources

Enantiomeric discrimination by chiral electromagnetic resonance enhancement

open access: yesChirality, 2023
AbstractCircularly polarized light interacts preferentially with the biomolecules to generate spectral fingerprints reflecting their primary and secondary structure in the ultraviolet region of the electromagnetic spectrum. The spectral features can be transferred to the visible and near‐infrared regions by coupling the biomolecules with plasmonic ...
Prashant Kumar   +2 more
openaire   +3 more sources

Schwinger effect and backreaction in de Sitter spacetime

open access: yesPhysics Letters B, 2016
We consider the particle–antiparticle pairs produced by both a strong electric field and de Sitter curvature. We investigate in 1+1 D the backreaction of the pairs on the electromagnetic field.
Clément Stahl, She-Sheng Xue
doaj   +1 more source

Field discrete Monte Carlo simulation of electromagnetic scattering characteristics of plasma sheath

open access: yesAIP Advances, 2020
The electromagnetic scattering of an ultra-high-speed plasma covered target is simulated by the field discrete Monte Carlo method. The flow field network is used to simulate the trajectory of electromagnetic wave particles according to the ...
Jieshu Jia   +5 more
doaj   +1 more source

Enhancing photocurrent transient spectroscopy by electromagnetic modeling [PDF]

open access: yesReview of Scientific Instruments, 2012
The shape and duration of photocurrent transients generated by a photoconductive switch depend on both the intrinsic response of the active material and the geometry of the transmission line structure. The present electromagnetic model decouples both shape forming contributions.
Baillargeat, Dominique   +4 more
openaire   +3 more sources

Quantification and coupling of the electromagnetic and chemical contributions in surface-enhanced Raman scattering

open access: yesBeilstein Journal of Nanotechnology, 2019
In surface-enhanced Raman scattering (SERS), both chemical (CE) and electromagnetic (EM) field effects contribute to its overall enhancement. However, neither the quantification of their relative contributions nor the substrate dependence of the chemical
Yarong Su   +5 more
doaj   +1 more source

Giant excitonic upconverted emission from two-dimensional semiconductor in doubly resonant plasmonic nanocavity

open access: yesLight: Science & Applications, 2022
Based on locally enhanced electromagnetic field and accelerated spontaneous emission rate, excitonic upconversion enhancement of more than 1000-fold was achieved in plasmonic nanocavity coupled transition metal dichalcogenide monolayers.
Pengfei Qi   +11 more
doaj   +1 more source

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