Results 111 to 120 of about 15,569 (209)

Fano resonances as a probe of phase coherence in quantum dots

open access: yes, 2001
In the presence of direct trajectories connecting source and drain contacts, the conductance of a quantum dot may exhibit resonances of the Fano type. Since Fano resonances result from the interference of two transmission pathways, their lineshape (as ...
Brouwer, P. W.   +2 more
core   +1 more source

Laser‐Induced‐Structural Transformation in Ti3CNTx MXene Monitored by Raman Spectroscopy with DFT Insight

open access: yesSmall, EarlyView.
A multi‐wavelength Raman study of microwave‐assisted hydrothermal Ti3CNTx MXene, supported by theoretical calculations, identifies laser‐power thresholds and evaluates its ambient‐condition stability. ABSTRACT MXenes are emerging 2D nanomaterials that have attracted growing attention for their highly tunable atomic structure, composition, and surface ...
Subrata Ghosh   +7 more
wiley   +1 more source

STM conductance of Kondo impurities on open and structured surfaces

open access: yes, 2002
We study the scanning tunneling microscopy response for magnetic atoms on open and structured surfaces using Wilson's renormalization group. We observe Fano resonances associated with Kondo resonances and interference effects.
C. A. Balseiro   +19 more
core   +1 more source

Quasi‐BIC and Reflective Mode Coupling Drives SHG Beyond the Q Factor Limit

open access: yesSmall, EarlyView.
An analytical expression is developed to relate second‐harmonic generation to both the resonance Q factor and absorptance. Simulations and experiments on a dual‐resonance 3R‐MoS2 metasurface validate the formula, showing that absorptance engineering provides an effective route to enhance SHG beyond conventional Q‐only design.
Wenkai Yang   +8 more
wiley   +1 more source

Independently Tunable Ultrasharp Double Fano Resonances in Coupled Plasmonic Resonator System

open access: yesIEEE Photonics Journal, 2018
A coupled plasmonic resonator system is investigated by both the finite element method (FEM) and the multimode interference coupled-mode theory (MICMT).
Hongxue Fu   +6 more
doaj   +1 more source

Electromagnetic Quasinormal Modes: A Foundational Framework for Describing Fano Resonances of Extinction Spectra

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
An ab initio electromagnetic framework links quasinormal modes to Fano resonances in extinction spectra. Analytical expressions for the Fano asymmetry and intensity parameters are derived from overlap integrals, enabling rapid spectral reconstruction and physical interpretation.
Mikhail Bochkarev   +5 more
wiley   +1 more source

Harnessing Interfacial Field Localization in Hexagonal GaP Mie Resonators

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
Сharacterization of Mie modes in self‐assembled GaP nanowires grown by MBE in vertical and horizontal configurations. The hexagonal cross‐section suppresses higher‐order modes while preserving dominant low‐order modes with spectral shifts. Simulations and dark‐field spectroscopy confirm the diameter‐dependent tunability.
Aleksandra A. Kutuzova   +8 more
wiley   +1 more source

Fano resonance in concentric ring apertures

open access: yesOptics Express, 2013
We demonstrate a polarization-independent mid-infrared Fano resonance with extraordinary transmission when light passes through two concentric metallic ring apertures. A high-Q dark mode is indirectly excitated by coupling with a low-Q bright mode. A coupled optical resonator model is used to analyze the coupling process between the bright and dark ...
Jie, Shu, Weilu, Gao, Qianfan, Xu
openaire   +2 more sources

Interference‐Induced Cavity Resonances and Imaginary Rabi Splitting

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
Coupling of a two‐level emitter to (a, b) a single‐mode resonance with a Lorentzian spectral density, and (c, d) a two‐mode cavity with a more complex spectral density. This work reveals a new polaritonic regime beyond the single‐mode description, emerging from emitter interaction with the interference‐induced resonance associated with the Fano ...
Anael Ben‐Asher   +2 more
wiley   +1 more source

One‐Step Fabrication of Non‐Ablative Microstructures for Efficient Second Harmonic Generation on LiNbO3 Thin Film

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
This study presents a novel one‐step femtosecond laser modification technique for fabricating high‐quality periodic metasurfaces on lithium niobate thin films without surface damage and scattering centers. Under oblique incidence at 1030 nm, a 4.75‐fold enhancement in second‐harmonic generation efficiency is achieved through complementary mechanisms ...
Feifei Wang   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy