Ion-beam-induced upconversion

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August undefined, 2024

WebThe 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 … 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 …

Subwavelength imaging through ion-beam-induced …

WebUltraviolet 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 … WebLanthanide-doped upconversion nanoparticles (UCNPs) (), which can optically convert a low-energy near-infrared beam into high-energy ultraviolet (UV) or visible photons, have facilitated photoactivation in lithography (), theranostics (), photoswitching (), optogenetics (), and optical memory ().Furthermore, UCNPs exhibit long-lived excited energy levels for … grant and stone timber

Evaluation of X-ray and carbon-ion beam irradiation with …

Webion-beam-induced upconversion emission of Tm3þ at short wavelengths through energy transfer upconversion. To shed more light on the energy transfer between … 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 … Web27 okt. 2015 · Photovoltaic cells are able to convert sunlight into electricity, providing enough of the most abundant and cleanest energy to cover our energy needs. However, the efficiency of current photovoltaics is … grant and stone tucson az

Phys. Rev. B 78, 195112 (2008) - Upconversion-induced …

Introductory Chapter: Introduction to Ion Implantation

WebBreakthroughs in medicine and bioimaging with up-conversion nanoparticles. Iman Rostami, 1, 2 Hamideh Rezvani Alanagh, 2 Zhiyuan Hu, 2, 3 Sarah H Shahmoradian 1 1 Laboratory of Biomolecular Research, Department of Biology and Chemistry, Paul Scherrer Institute, Villigen, PSI 5232, Switzerland; 2 CAS Key Laboratory of Standardization and … WebThese accelerators usually have versatile ion sources which can generate ion beams from essentially the whole Periodic Table. So heavy ion beams are easy to produce, and are … grant and stone wycombeWeb16 feb. 2016 · “Ion Beam-Induced Spatio-temporal Structural Evolution of Matter: Towards New Quantum Technologies” will be hosted by University of Torino from 23 to 27 May 2016. This event is a follow-up to the IAEA Consultant Meeting “Radiation Damage in Nanostructures created by Ion Beams” held in December 2015 at the IAEA … chinups grip

"Web22 aug. 2024 · First, the bottom electrode is patterned by using a standard optical lithography process, and then vertical Ar + ion milling is done to prepare the bottom electrode using an IBE system with 300 eV electron beam energy, 80 mA ion beam current, and 100 mA neutralization current under a 5.0×10-4 Pa background vacuum and a … " - Ion-beam-induced upconversion

Ion-beam-induced upconversion

Mutation breeding of ornamental plants using ion beams - 日本 …

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. Web12 nov. 2015 · 1.72 MB 1 Subwavelength imaging through ion-beam-induced upconversion Data January 2024 Zhaohong Mi · Yuhai Zhang · Vanga Sudheer Kumar …

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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 … Web30 okt. 2014 · To investigate ion beam effects on polyimide, pyromellitic dianhydride--oxydianiline films were exposed to He/sup 2 +/ ions in the energy range of 1.9 to 3.6 MeV, fluences of 0.25 to 3.0 x 10/sup 15/ ions/cm/sup 2/, and sample temperatures of 298 and 130 K. RBS, x-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, …

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 … WebThe unknown Light Induced Fluorescence (LIF) for analysis By Pierre-Paul Proulx Jan 13, 2024. Activity Photo ... The photorefractive response was investigated with a two-beam coupling technique. The gain of the probe beam ... We report the spectroscopic behaviour of the Er3+ ion in two lead silicate glasses containing different ...

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. Web6 apr. 2011 · Focused Ion Beam Induced Microstructural Alterations: Texture Development, Grain Growth, and Intermetallic Formation - Volume 17 Issue 3. Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our websites.

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 ...

Webbeam facilities depends on the target survival in conditions of intense radiation field and thermo-mechanical solicitations induced by the driving ion beam. Material property degradation due to ion- beam induced damage will limit target lifetim e, either by affecting target performance or, by reducing the material resilience. chin up shirtsWeb21 dec. 2024 · Nuclear microscopy technologies using ion beams are based on the measurement of various types of secondary particles (e.g., bremsstrahlung and … chin-ups grip widthWebPenn alumnus in physics (BA, MS), current research scientist at the Georgia Tech Research Institute (GTRI). Main interests include neutral-atom and solid-state quantum computing, sensitive ... grant and taylaWeb14 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 ... grant and taylor break upWeb19 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 … grant and stone supermarketWebTime-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 … grant and stone plumbing high wycombeWebIn order to reveal the enhancement mechanism of UCL induced Fig. 5 shows the schematic illustration of the lattice structure of by Cd2+ doping, the upconversion nature of the UCNPs without and hexagonal NaREF4 and Cd2+ doped NaREF4. chin up shoulders back quote