Results 141 to 150 of about 84,307 (339)

Determinants of well-being [PDF]

open access: yesarXiv
Traditionally, European social policies have focused on material well-being and social justice, neglecting subjective indicators. This review systematically examines the scientific understanding of well-being, its indicators, and its relationship with governance.
arxiv  

Time‐ and Frequency‐Domain THz Imaging for the Characterization of Subwavelength Tags in Anticounterfeiting Devices

open access: yesAdvanced Materials Technologies, EarlyView.
Anticounterfeiting optical devices typically rely on random surface patterns revealed under IR/vis/UV light. Despite its security, this method suffers from the unavoidable deterioration of exposed superficial patterns. The proposed technique utilizes the high penetration depth and resolution of THz radiation to reveal submillimeter metallic patterns ...
Tiziana Ritacco   +4 more
wiley   +1 more source

Aerosol Jet Printing of Superhydrophobic Surfaces

open access: yesAdvanced Materials Technologies, EarlyView.
A novel method for creating spatially programmable superhydrophobic surfaces using an aerosol jet printer is presented. This technique allows precise deposition of micrometer‐sized polymer solution droplets onto a substrate, with control over surface morphology, microstructure, and wettability through solvent evaporation modulation.
Ke Zhong   +5 more
wiley   +1 more source

Durable Anti‐fogging Polymer Coatings Based on C,H Insertion Cross–linking (CHic) That Are User and Environmentally Friendly

open access: yesAdvanced Materials Technologies, EarlyView.
Highly photoreactive polymer networks prevent fogging by forming uniform water films. Activated by visible light and cross‐linked by CH insertion, these coatings exhibit excellent water film formation, transparency, and durability, even after frequent washing.
Alexander Bleiziffer   +2 more
wiley   +1 more source

Wide Color Gamut and High Sensitivity in Luminescent Thermal Indicators from an Organic Energy Donor‐Acceptor System with Tunable Molecular Interactions

open access: yesAdvanced Optical Materials, EarlyView.
A novel energy donor‐acceptor system based on organic small molecules is studied and applied in thermally responsive thin films. Their photoluminescence is gradually tuned as a function of the annealing temperature, resulting in an attractive property for quality control and thermal patterning technologies. The films are evaluated as thermal indicators,
Guillermo Martínez‐Denegri   +2 more
wiley   +1 more source

Self‐Assembled Physical Unclonable Function Labels Based on Plasmonic Coupling

open access: yesAdvanced Optical Materials, EarlyView.
This article introduces advanced anti‐counterfeit labels crafted through DNA‐guided self‐assembly of plasmonic nanoparticles. Utilizing nanosphere lithography for dense and precise nanoparticle placement, these labels feature unique, unclonable optical signatures achieved through plasmonic coupling, detectable by an economical 3D‐printed dark field ...
Mihir Dass   +9 more
wiley   +1 more source

Spherical and Aspherical Lenses for Boosting the Performance of Terahertz Imaging Systems

open access: yesAdvanced Photonics Research, EarlyView.
This study investigates the enhancement of terahertz (THz) detection through the terajet effect using mesoscale dielectric lenses of various geometries. Spherical, aspherical, and cubic polytetrafluoroethylene lenses are evaluated at 0.15 and 0.3 THz, demonstrating significant improvements in responsivity and noise reduction.
El Hadj Abidi   +7 more
wiley   +1 more source

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