Results 1 to 10 of about 36,591 (129)

Upconversion Luminescence of NaYF4:Ln3+ Nanoparticles on Gold Nanorod Array with Dual-Wavelength Excitation [PDF]

open access: yesNanomaterials
Plasmonic nanostructures have been widely employed to improve upconversion luminescence performance; however, their impact on excitation pathways under multi-wavelength excitation is not yet fully understood.
Haoyang Chen   +7 more
doaj   +2 more sources

Topology-driven energy transfer networks for upconversion stimulated emission depletion microscopy [PDF]

open access: yesLight: Science & Applications
Lanthanide-doped upconversion nanoparticles enable upconversion stimulated emission depletion microscopy with high photostability and low-intensity near-infrared continuous-wave lasers.
Weizhao Gu   +4 more
doaj   +2 more sources

Efficient low-power photon upconversion in core/shell heterostructured semiconductor nanowires [PDF]

open access: yesEPJ Web of Conferences, 2023
Photon energy upconversion, i.e. the conversion of several low-energy photons to a photon of higher energy, offers significant potential for nano-optoelectronics and nanophotonics applications.
Jansson Mattias   +3 more
doaj   +1 more source

Upconversion fluorescent tuning based on CdS and SiO2 photonic crystals for computer chip label

open access: yesResults in Optics, 2022
Manipulating fluorescence color to achieve patterned function may access to many applications and remains some challenges. In this work, we provide an effective way to manipulate upconversion fluorescence through the photonic crystals.
Zihao Chen   +4 more
doaj   +1 more source

Lanthanide-Doped Upconversion Nanoparticles for Super-Resolution Microscopy

open access: yesFrontiers in Chemistry, 2021
Super-resolution microscopy offers a non-invasive and real-time tool for probing the subcellular structures and activities on nanometer precision. Exploring adequate luminescent probes is a great concern for acquiring higher-resolution image.
Hao Dong   +3 more
doaj   +1 more source

Higher-Order Multiphoton Absorption Upconversion Lasing Based on ZnO/ZnMgO Multiple Quantum Wells

open access: yesNanomaterials, 2022
In the progress of nonlinear optics, multiphoton absorption (MPA) upconversion lasing enables many vital applications in bioimaging, three-dimensional optical data storage, and photodynamic therapy.
Shushu Ma   +5 more
doaj   +1 more source

Spectroscopy and Near-Infrared to Visible Upconversion of Er3+ Ions in Aluminosilicate Glasses Manufactured with Controlled Optical Transmission

open access: yesApplied Sciences, 2021
In this work we report on the spectroscopic properties and the near-infrared to visible upconversion of Er3+ ions in aluminosilicate glasses manufactured by directionally solidification with the laser floating zone technique. Glasses were manufactured in
Daniel Sola   +3 more
doaj   +1 more source

Metasurface Enhanced Upconversion Efficiency for High-Performance Pixel-Less Thermal Imaging

open access: yesPhotonics, 2023
High-performance infrared thermal imaging devices are widely used in military, biomedical and other fields. Upconversion pixel-less imaging is promising for infrared imaging.
Yi Wang   +12 more
doaj   +1 more source

Photoluminescence upconversion at GaAs/InGaP2 interfaces driven by a sequential two-photon absorption mechanism [PDF]

open access: yes, 2016
This paper reports on the results of an investigation into the nature of photoluminescence upconversion at GaAs/InGaP2 interfaces. Using a dual-beam excitation experiment, we demonstrate that the upconversion in our sample proceeds via a sequential two-
Ekins-Daukes, NJ   +8 more
core   +2 more sources

Upconversion Luminescence Sensitized pH-Nanoprobes

open access: yesMolecules, 2017
Photon upconversion materials, featuring excellent photophysical properties, are promising for bio-medical research due to their low autofluorescence, non-cytotoxicity, low photobleaching and high photostability.
Manoj Kumar Mahata   +2 more
doaj   +1 more source

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