Results 51 to 60 of about 181,027 (266)

Disrupting J‐Aggregation in Triazatruxene Dimers to Develop Responsive Luminescent Inks for Anti‐Counterfeiting Applications

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This study investigates the stimulus‐responsive behavior of trialkylated triazatruxene dimers for third‐generation luminescent security inks. In particular, the derivative with flexible dodecyl chains displays high‐contrast, reversible color changes upon heating or shear, driven by liquid crystalline phase transitions and involving J ...
Raúl Martín   +7 more
wiley   +1 more source

Carbonized Polymer Dots‐Based Spectrally Adaptable Photonic Microbarcodes

open access: yesAdvanced Optical Materials, EarlyView.
This study explores spectrally tunable photonics barcodes using carbonized polymer dots (CPDs) based on whispering gallery mode (WGM) photoluminescence. CPDs offer wavelength‐dependent emission from visible to near‐infrared (NIR), thereby enabling variable WGM emissions.
Barun Kumar Barman   +2 more
wiley   +1 more source

Flexible and Water‐Resistant Y3Al5O12:Er3+/Yb3+ Upconversion Nanoparticles‐Based Luminescent Cellulose Paper for Anti‐Counterfeiting and VOCs Detection

open access: yesAdvanced Optical Materials, EarlyView.
This work presents a cost effective and sustainable approach of designing flexible, water resistant and bright green luminescent Y3Al5O12:Er3+/Yb3+ upconversion nanoparticles (UCNPs) incorporated into cellulose paper for anti‐counterfeiting and volatile organic compounds (VOCs) detection applications.
Annu Balhara   +5 more
wiley   +1 more source

Improving health and economic security by reducing work schedule uncertainty. [PDF]

open access: yesProc Natl Acad Sci U S A, 2021
Harknett K, Schneider D, Irwin V.
europepmc   +1 more source

Realizing Multispectral Fabry–Perot Structural Color Filters Based on Optical Nanostructures on a Complementary Metal Oxide Semiconductor Chip

open access: yesAdvanced Photonics Research, EarlyView.
A new paradigm for the implementation of Fabry–Perot color filters, which may be fabricated using complementary metal oxide semiconductor‐processing with significantly fewer process steps than the state of the art is demonstrated. It is streamlining and economizing the manufacturing process associated with commercial products incorporating color ...
Hongwei Gao   +4 more
wiley   +1 more source

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