Results 221 to 230 of about 81,064 (299)

Artifact estimation network for MR images: effectiveness of batch normalization and dropout layers. [PDF]

open access: yesBMC Med Imaging
Maruyama T   +6 more
europepmc   +1 more source

Label‐Free Characterization of Lipid Interfaces Using Plasmonic Gold Nanorods as Optically Active Nanosensors

open access: yesAdvanced Optical Materials, EarlyView.
A label‐free plasmonic nanosensor platform is presented based on single gold nanorods for the nanometric characterization of lipid interfaces. By correlating optical scattering signals with membrane packing and refractive index, this approach enables the detection of gel‐to‐fluid transitions in lipid interfaces, offering a robust, high‐resolution ...
Alfredo Casasnovas‐Melián   +12 more
wiley   +1 more source

Age-related changes in 'cortical' 1/f dynamics are linked to cardiac activity. [PDF]

open access: yesElife
Schmidt F   +5 more
europepmc   +1 more source

Smart Theremin Based on Electromagnetic Metasurfaces for Fine Dual‐Hand Perception

open access: yesAdvanced Optical Materials, EarlyView.
The proposed Meta‐Theremin leverages a frequency‐spatial multiplexing metasurface to enable robust dual‐hand perception by shielding environmental noise and confining EM fields to interaction zones. Its physics‐informed neural network decouples hand‐specific echoes, enhancing accuracy.
Che Liu   +8 more
wiley   +1 more source

Advanced Emissivity Tuning Via Femtosecond Laser Surface Engineering

open access: yesAdvanced Optical Materials, EarlyView.
Femtosecond laser surface processing (FLSP) is employed to fabricate titanium‐based metamaterials with engineered micro/nano‐scale features that exhibit spectrally selective and omnidirectional thermal emissivity. By integrating advanced ellipsometry, electromagnetic modeling, and compositional analysis, the work reveals resonance‐driven emissivity ...
Zahra Kamali Khanghah   +8 more
wiley   +1 more source

Heartbeat perception is causally linked to frontal delta oscillations. [PDF]

open access: yesCommun Biol
Haslacher D   +9 more
europepmc   +1 more source

Room‐Temperature Surface Exciton Polaritons in Colloidal J‐Aggregate Flakes

open access: yesAdvanced Optical Materials, EarlyView.
Colloidal J‐aggregate flakes, synthesized via electrostatic assembly of cyanine molecules and a polyelectrolyte, exhibit robust excitonic properties and support surface exciton polaritons at room temperature. Their strong scattering and tunable optical response introduce a versatile, solution‐processable platform for advanced photonic and quantum ...
Carla Estévez‐Varela   +8 more
wiley   +1 more source

Interactions of Nitrogen‐Vacancy Centers in Diamond with Electron Beams: Implications for Quantum Sensing and Photoluminescence Stability

open access: yesAdvanced Optical Materials, EarlyView.
Under the influence of an electron beam, the photoluminescence (PL) and quantum sensing stability of nitrogen‐vacancy (NV) centers in fluorescent nanodiamonds (FNDs) change. This work elucidates structural and functional changes induced by the electron beam in FNDs and identifies imaging conditions to preserve NV properties and offers a pathway for top‐
Bradley T. Flinn   +10 more
wiley   +1 more source

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