Results 131 to 140 of about 42,068 (246)
Surface-enhanced Raman spectroscopy (SERS) harnesses the confinement of light into metallic nanoscale hotspots to achieve highly sensitive label-free molecular detection that can be applied for a broad range of sensing applications.
Sarah May Sibug-Torres +8 more
doaj +1 more source
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
Plasmonic nanostructures can both drive and interrogate light-driven catalytic reactions. Sensitive detection of reaction pathways is achieved by confining optical fields near the active surface.
Gyeongwon Kang +5 more
doaj +1 more source
Harnessing Interfacial Field Localization in Hexagonal GaP Mie Resonators
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
Interference‐Induced Cavity Resonances and Imaginary Rabi Splitting
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
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
Polaritonic Spectra of Optical Mie Voids
Optical Mie voids have been shown to provide a versatile platform for polaritonic physics. Analytical and numerical analysis reveal how void resonances couple to excitonic media, enabling weak‐ and strong‐coupling regimes, polariton gaps, Q‐factor enhancement, and spatial mode localization.
Evgeny Ryabkov +3 more
wiley +1 more source
Disorder‐Enabled Directional Delocalization and Wave Steering in Time‐Modulated Dirac Materials
Random temporal modulation of a vector potential in a Dirac medium produces disorder‐enabled directional delocalization: waves propagating parallel to the modulation direction remain perfectly delocalized, whereas those in all other directions undergo strong Anderson localization. Temporal disorder thus acts as a directional filter, enabling collimated
Seulong Kim, Kihong Kim
wiley +1 more source

