Results 101 to 110 of about 19,577 (268)

upconversion

open access: yes, 2014
Citation: 'upconversion' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.U06574 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Thermometric Based‐Microswimmers with Chemical and Optical Engines

open access: yesAdvanced Intelligent Systems, EarlyView.
Temperature sensing at small scales is typically performed using passive luminescent particles. Here, an alternative approach is demonstrated by integrating upconversion thermometry into self‐propelled microswimmers powered by chemical fuels or light. This strategy offers a step toward dynamic thermal sensing at the microscale, relevant to both lab‐on ...
João M. Gonçalves, Katherine Villa
wiley   +1 more source

An Upconversion Niobium Pentoxide Bulk Glass Codoped with Er3+/Yb3+ Fabricated by Aerodynamic Levitation Method

open access: yes, 2015
(82-x)NbO2.5-17.4LaO(1.5)-xZrO(2)(NLZ) (x=7.5, 10, 12.5, 15, 17.5, and 20) bulk glasses codoped with Er3+/Yb3+ were successfully fabricated by aerodynamic levitation method for the first time.
Longhao Qi   +9 more
core   +1 more source

Enhanced upconversion photoluminescence by novel plasmonic structures [PDF]

open access: yes, 2018
The emerging field of plasmon-enhanced upconversion photoluminescence has a significant impact on a variety of technologies, including high-efficiency solar energy systems and biotechnology.
Qin, Heng
core   +1 more source

A Multifunctional Nanocomposite Hydrogel for Endoscopic Tracking and Manipulation

open access: yesAdvanced Intelligent Systems, 2020
Herein, the fabrication of multi‐responsive and hierarchically organized nanomaterial using core‐shell SrF2 upconverting nanoparticles, doped with Yb3+, Tm3+, Nd3+ incorporated into gelatin methacryloyl matrix, is reported.
Adriana Augurio   +10 more
doaj   +1 more source

Phosphors for lighting applications

open access: yes, 2012
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Trivalent rare earth cations (RE3+) activated nanometre-sized Y2O2S and Gd2O2S phosphors were prepared by converting hydroxycarbonate precursor powders ...
Yan, Xiao
core  

Recent Progress on Rare-Earth-Doped Upconversion Nanomaterials for Bioassay Applications

open access: yesBiosensors
Rare-earth-doped upconversion nanoparticles (UCNPs) have been widely used in biological detection due to their unique anti-Stokes shift, stable chemical properties, tunable emission wavelengths, and low biotoxicity.
Jiling Xu   +5 more
doaj   +1 more source

Extended Near-Infrared Photoactivity of Bi6Fe1.9Co0.1Ti3O18 by Upconversion Nanoparticles

open access: yesNanomaterials, 2018
Bi6Fe1.9Co0.1Ti3O18 (BFCTO)/NaGdF4:Yb3+, Er3+ (NGF) nanohybrids were successively synthesized by the hydrothermal process followed by anassembly method, and BFCTO-1.0/NGF nanosheets, BFCTO-1.5/NGF nanoplates and BFCTO-2.0/NGF truncated tetragonal ...
Wen Ge   +4 more
doaj   +1 more source

Advancing design strategies in smart stimulus‐responsive liposomes for drug release and nanomedicine

open access: yesBMEMat, EarlyView.
Schematic illustration of stimulus‐responsive liposomes designed for controlled drug release and nanomedicine. The innermost circle represents different liposomal structures, including unilamellar, multilamellar, and multivesicular liposomes. The middle layer illustrates the responsive phospholipid components.
Yuchen Guo   +9 more
wiley   +1 more source

Preparation of photon-upconversion nanoparticles

open access: yes, 2021
The present work aimed to characterize photon-upconversion nanoparticles based on lanthanides. The synthesis of NaGdF4:Yb/Tm@NaGdF4:Eu core-shell nanoparticles using a europium activator was designed based on the available literature.
Kelarová, Štěpánka
core   +1 more source

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