Ion-beam-induced upconversion
Web7 mei 2007 · Two-color upconversion (UC) emissions with anomalous power dependence were observed in spectrally tailored rare-earth-ion-doped Zr O 2 nanocrystals. Single green and red UC radiation in the visible range was induced by 980 nm diode laser excitation in Zr O 2 : Er 3 + and Zr O 2 : Er 3 + + Yb 3 + nanocrystals, yielding quadratic and linear laser … Web18 okt. 2024 · In situ fluorophores were induced on polyvinyl alcohol (PVA) bulk materials by direct femtosecond laser writing. The generation of fluorophores was ascribed to localized laser-assisted carbonization. The carbonization of PVA polymers was confirmed through X-ray photoelectron spectroscopy analysis. The distinct fluorescence responses …
Ion-beam-induced upconversion
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WebBending strain induces strong enhancement and modulation of the upconversion emission in doped BTO thin films. Because the unshielded 3d 5 configuration of Mn 2+ is more susceptible to crystal field changes, the introduction of an Mn 2+ ion further promotes the strain-induced modulation effect. Web1 mei 2024 · This work considers an upconverting material consisting of erbium ions (Er 3 +) doped into a TiO 2 thin film (TiO 2 :Er). The Er 3 + ions are able to absorb light at …
Web14 jun. 2024 · 1. Introduction. This chapter elucidates the concept of low-energy/high-energy ion implantation and its key applications in materials science. Ion implantation is the interaction of energetic ion beam with solids. In this ion-solid interaction, ions penetrate through the materials and slow down to some extent into the materials due to ... Web12 apr. 2024 · Upconversion nanoparticles (UCNPs) are a unique class of lanthanide-ion-doped optical nanomaterials featuring a wealth of electronic transitions ... Yao, S. Enzymatic-induced upconversion photoinduced electron transfer for sensing tyrosine in human serum. Biosens. Bioelectron. 2016, 77, 957–962. [Google Scholar] ...
Web19 okt. 2024 · Since amplifiers and lasers typically operate above room temperature due to pump-induced heating, the temperature dependence of the peak-absorption cross-section of the KYb0.57Gd0.43(WO4)2 is evaluated for the sample being heated from 20 °C to 170 °C, resulting in a measured reduction of peak-absorption cross-section at the transitions … Web13 mrt. 2012 · It is shown that the formation of excimer molecules is an important process. This paper summarizes various studies of particle beam induced light emission and presents the first results of a direct comparison of light emission induced by electron- and ion beam excitation.
WebPhoton upconversion (UC) is a process in which the sequential absorption of two or more photons leads to the emission of light at shorter wavelength than the excitation wavelength. It is an anti-Stokes type emission. An example is the conversion of infrared light to visible light.Upconversion can take place in both organic and inorganic materials, through a …
Web13 apr. 2024 · The UCNPs-MB sensing system was implemented based on the color change of MB insertion into dsDNA and MB-induced upconversion fluorescence quenching, as shown in Scheme 1. The dsDNA obtained by PCR was specifically recognized by MB under the presence of Salmonella , resulting in a lighter color and lower absorbance of the … rbt graphingWeb18 jul. 2024 · 01:27. 2. Applications. 2.1. Materials science. This section introduces to the materials scientists, chemists, and physicists about the ion beam techniques for materials analysis, modification of materials, and development of new materials using ion beam. MeV ion beams for materials analysis techniques are being used as complementary … sims 4 ghost colorsWeb12 nov. 2015 · 1.72 MB 1 Subwavelength imaging through ion-beam-induced upconversion Data January 2024 Zhaohong Mi · Yuhai Zhang · Vanga Sudheer Kumar … rbt from the bacbWeb17 mei 2024 · The ions in a beam are produced by special instruments called ion sources. They gain speed when entering an electric field, which is produced in a particle accelerator, and are steered and focused by magnetic fields to travel in parallel trajectories inside a vacuum in a metal tube. rb th ajhevWebUpconversion Nanoparticles: Stability, Surface Modification and Dye Sensitization rb thamovaWeb19 jul. 2024 · Photon upconversion represents a promising avenue to reduce the spectral mismatch losses limiting the efficiency of solar cells. Here we studied in detail the impact of inserting Yb3+/Er3+ codoped KY7F22 upconversion nanoparticles (UCNPs) into the different interfaces of a solution-processed mixed-cation lead mixed-halide perovskite … rbt handbook ethicsWebThe mechanisms can be ion beam-induced photoluminescence or upconversion. For example, with incubated NdYF 4 :Yb/Tm nanoparticles, Mi et al. reported imaging … rbt handbook bacb