Ion-beam-induced upconversion
WebWe experimentally observed that the ion beam can be used as a new form of excitation source to induce photon upconversion in lanthanide-doped nanocrystals. This approach … WebWe experimentally observed that the ion beam can be used as a new form of excitation source to induce photon upconversion in lanthanide-doped nanocrystals. This approach enables luminescence imaging and simultaneous mapping of cellular structures with a spatial resolution of sub-30 nm.
Ion-beam-induced upconversion
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Webpiezoelectric-induced ML emissions.35−40 On the other hand, the Er3+ ion is one of the most studied rare earth luminescence centers with UC ability.41,42 Temperature sensing based on the fluorescence intensity ratio (FIR) between 2H 11/2 and 4S 3/2 → 4I 15/2 transitions of Er 3+ has been demonstrated with the Web17 nov. 2008 · We have analyzed the dynamics of the upconversion-induced delayed fluorescence for a model multicomponent organic system, in which high concentrations …
Web18 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 … Web13 mrt. 2024 · We propose the use of an n-doped periodic AlN/GaN quantum cascade structure for the optical up-conversion of multiple near-infrared (near-IR) photons into deep-ultraviolet (deep-UV) radiation. Without applying an external bias voltage, the active region of such a device will (similar to an un-biased quantum cascade laser) resemble a …
WebEffects of high concentration and clustering on the performance of erbium-doped silica waveguide amplifiers are numerically investigated. The model, based on propagation-rate equations of a laser system containing isolated ions and ion-pairs, is numerically solved by combining Runge-Kutta and full-vectorial finite-element methods; it allows the description … Webion beams has spread quickly among researchers because of the expectation that ion beams, being different from gamma rays, will create new mutagens; this has probably renewed scientific interest in mutation breeding. Specifically, it appears that the report by Nagatomi et al. (1997) on the induction of the ion beam-specific flower-color mutant in
Web5 aug. 2024 · However, for ion beam-sensitive materials such as halide perovskites, the ion beam milling process can easily cause decomposition and structure damage to the specimen. Here we investigate the influence factors of ion beam damage theoretically and experimentally, and successfully obtain the high-resolution transmission electron …
Web12 nov. 2015 · We experimentally observed that the ion beam can be used as a new form of excitation source to induce photon upconversion in lanthanide-doped nanocrystals. This approach enables luminescence ... how to reweave lawn chairWeb11 apr. 2024 · Upconversion nanoparticles (UCNPs), which can convert near-infrared light to visible light, become possible through two-photon or multi-photon processes. To improve the luminescence intensity and energy conversion efficiency, Yin and co-workers presented a significantly increased upconversion luminescence by combining the band edge effect … northern american annuityWebUpconversion Nanoparticles: Stability, Surface Modification and Dye Sensitization how to re whiten shoesWebThe mechanisms can be ion beam-induced photoluminescence or upconversion. For example, with incubated NdYF 4 :Yb/Tm nanoparticles, Mi et al. reported imaging … northern amateur golfWebTime-resolved Z-scan measurements were employed to characterize energy transfer upconversion on the phosphate glass matrix, named PAN (P 2 O 5 –Al 2 O 3 –Na 2 CO 3), doped with increasing Nd 3+ concentrations. It was observed a linear dependence of the upconversion parameter with the dopant agent, which indicates the presence of a static … northern american grey bearWebUltraviolet upconversion emissions of 246.2 and 252.8 nm from 6DJ levels of Gd3+ ions were observed in GdF3: 10% Yb3+, 0.7% Tm3+ nanocrystals under 980 nm excitation from a laser diode. The 6DJ levels of Gd3+ ions can be efficiently populated by energy transfer processes of Yb-->Tm-->Gd and Yb-->Gd. A six-photon upconversion process was … northern america countrieshttp://www-naweb.iaea.org/napc/physics/meetings/TM52976.html how to reweave patio chairs