Results 41 to 50 of about 9,394 (232)
Mechanisms of Luminescence in Upconversion Nanoparticles
, 2023 Upconversion nanoparticles show an increasing interest that is not bound to stop for many years to come. The upconversion is observed in various materials, from transition metals, semiconductor quantum dots, lanthanide ions, organic nanoparticles, and ...
Ćirić, Aleksandar
core +1 more source
Tuning NaYF4 Nanoparticles through Alkaline Earth Doping
Nanomaterials, 2013 Phase and size of lanthanide-doped nanoparticles are the most important characteristics that dictate optical properties of these nanoparticles and affect their technological applications.
Feng Wang, Xian Chen, Dengfeng Peng
doaj +1 more source
Nature Communications, 2021 Though upconversion nanoparticles (UCNPs) are attractive for infrared detecting and modulating photonic devices, devising strategies to electrically manipulate upconversion emission remain a challenge.
Yiming Wu +4 more
doaj +1 more source
Upconversion Nanoparticles for Bioimaging and Regenerative Medicine [PDF]
Frontiers in Bioengineering and Biotechnology, 2016 Nanomaterials are proving useful for regenerative medicine in combination with stem cell therapy. Nanoparticles (NPs) can be administrated and targeted to desired tissues or organs and subsequently be used in non-invasive real-time visualization and tracking of cells by means of different imaging techniques, can act as therapeutic agent nanocarriers ...
González Béjar, María +2 more
openaire +3 more sources
Upconversion amplification through dielectric superlensing modulation
Nature Communications, 2019 Emission levels useful for applications from upconversion nanoparticles require high laser irradiance. Here, Liang et al. exploit the superlensing effect from dielectric microbeads to enhance the luminescence efficiency of upconversion nanoparticles and ...
Liangliang Liang +12 more
doaj +1 more source
Nature Communications, 2021 Upconversion microlasers present a lot of advantages but also require high pumping powers. Here the authors present a high-performing microlaser based on anti-Stokes-shift in upconversion nanoparticles synthesized using a technique of liquid quenching.
Byeong-Seok Moon +5 more
doaj +1 more source
Nature Communications, 2017 Upconversion nanoparticles, which do not suffer from the photophysical artifacts that limit fluorescent molecules, offer an exciting opportunity for biological super-resolution imaging. Here, Zhan et al.
Qiuqiang Zhan +9 more
doaj +1 more source
Advances in Condensed Matter Physics, 2013 Highly crystalline body-centered cubic structure Y2O3 with lanthanide (Ln) codopants (Ln = Yb3+/Er3+ and Yb3+/Ho3+) has been synthesized via a moderate hydrothermal method in combination with a subsequent calcination. The structure and morphology of Y(OH)
Haibo Wang +5 more
doaj +1 more source
Water-Stable Upconverting Coordination Polymer Nanoparticles for Transparent Films and Anticounterfeiting Patterns with Air-Stable Upconversion [PDF]
, 2023 Altres ajuts: acords transformatius de la UABPhoton upconversion (UC) based on triplet-triplet annihilation is a very promising phenomenon with potential application in several areas, though, due to the intrinsic mechanism, the achievement of diffusion ...
Zhang, Junda +5 more
core +1 more source
Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement
Nature Communications, 2021 Photon upconversion with near-infrared excitation and ultraviolet emission has many applications, but suffers from low quantum efficiency. Here, the authors report a six-photon upconversion process in nanoparticles with heterogeneous core-multishell ...
Qianqian Su +9 more
doaj +1 more source