Results 221 to 230 of about 280,062 (388)

In Situ Transformation of Electrum Nanoclusters Embedded in Polymer Matrices Exhibit Near‐Infrared Emission With Quantum Yield Exceeding 70%

open access: yesAdvanced Optical Materials, EarlyView.
The AuAgNCs@OSTE nanocomposite, fabricated using off‐stoichiometric thiol‐ene polymerization, incorporates Au23‐xAgx(SAdm)15 nanoclusters and OSTE monomer. After UV curing, it reaches a maximum PLQY of 73% at 740 nm after 20 h of UV curing. After 72 h UV curing, PLQY reaches 60% at 850 nm, with minimal reabsorption losses due to the higher Stokes shift.
Madhuri Jash   +4 more
wiley   +1 more source

Plasmonic Nanoparticle‐on‐Nanoslit Antenna as Independently Tunable Dual‐Resonant Systems for Efficient Frequency Upconversion

open access: yesAdvanced Optical Materials, EarlyView.
The nanoparticle‐on‐slit (NPoS) cavity has emerged as a sub‐wavelength platform for efficient coherent frequency conversion between mid‐infrared and visible light, and for nanoscale nonlinear vibrational spectroscopy. This numerical study identifies the NPoS quasi‐normal modes, relates them to known nanogap patterns, and predicts the relative ...
Huatian Hu   +3 more
wiley   +1 more source

Multimodal Luminescence from LaAlO3:Eu3+ via Trap Modulation for High‐Temperature Applications

open access: yesAdvanced Photonics Research, EarlyView.
LaAlO3:Eu3+ (LAO:E) phosphor exhibiting multimode luminescence enabled by multilevel traps spanning shallow to deep states is reported. These traps ensure controlled charge storage and release at room and elevated temperatures. Experimental studies and theoretical calculations reveal the trapping–detrapping mechanism, highlighting LAO:E as a promising ...
Abdulelah Alolayan   +3 more
wiley   +1 more source

Crimean-Congo Hemorrhagic Fever Virus Africa 1 Lineage in Hyalomma dromedarii Ticks, Algeria, 2023. [PDF]

open access: yesEmerg Infect Dis
Temani M   +10 more
europepmc   +1 more source

Comparison of Glass Material and Laser Excitation Regime for Upconversion‐Based 3D Volumetric Display

open access: yesAdvanced Photonics Research, EarlyView.
This study explores scalable glass matrices for two‐step, two‐frequency (TSTF) upconversion‐based 3D volumetric displays. While Er3+‐doped TeO2–ZnO–Na2O (TZN) and BaO–Ga2O3–GeO2 (BGG) glasses show weaker TSTF upconversion than reference ZrF4–BaF2–LaF3–AlF3–NaF (ZBLAN) glass under continuous‐wave lasers, TZN surpasses ZBLAN under pulsed laser excitation
Yunle Wei   +8 more
wiley   +1 more source

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