Results 81 to 90 of about 19,577 (268)
Red-to-Blue Photon Upconversion Enabled by One Dimensional CdTe Nanorods
, 2020 Photon upconversion via triplet-triplet annihilation creating light in the high energy regime of the visible spectrum could prove particularly useful in applications such as photocatalysis. Quantum-confined semiconductor nanocrystals have previously been
Lea, Nienhaus +3 more
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Preparation of Upconversion Nanocrystals NaYF4: Yb/Tm with Hydro(solvo)thermal Methods
Nano Biomedicine and Engineering, 2017 A upconversion nanocrystal of NaYF4:Yb/Tm was synthesized successfully by two different methods of solvothermal and hydrothermal, respectively. The properties of the products were characterized and compared.
Feifei Zhao, Dongguang Yin
doaj +1 more source
Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing
Advanced Science, EarlyView.Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale +6 more
wiley +1 more source
Spatiotemporal control of photochromic upconversion through interfacial energy transfer
Nature CommunicationsDynamic control of multi-photon upconversion with rich and tunable emission colors is stimulating extensive interest in both fundamental research and frontier applications of lanthanide based materials.
Long Yan +4 more
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Advanced Science, EarlyView.This study reports a novel rationally‐designed optical nanoprobe based on dumbbell‐shaped mesoporous silica‐coated gold nanorods, loaded with rare‐earth oxides, photosensitizers, and tumor‐targeted peptides, enabling plasmonic‐enhanced multimodal imaging and PTT‐PDT synergy.
Baikang Zhuang +12 more
wiley +1 more source
Pr3+‐Based Visible‐to‐Ultraviolet Upconversion. A minireview
Advanced Physics ResearchOptical upconversion materials doped with lanthanides, such as Yb3+‐Er3+, Yb3+‐Ho3+, and Yb3+‐Tm3+ coped systems, have been intensively studied over the past two decades because they can convert long‐wavelength and low‐energy near‐infrared photons into ...
Leipeng Li +5 more
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Advanced Science, EarlyView.Light‐switchable MSCs (MSC‐UCNPs) were constructed by intracellular incorporation of UCNPs. Upon 980 nm irradiation, UCNPs emitted localized ultraviolet light (365 nm), activating the ROS/HEXB/LAMP1 signaling pathway to suppress lysosome–multivesicular body fusion and thereby enhance exosome biogenesis. Embedded within an injectable hydrogel, MSC‐UCNPs
Tingting Wu +7 more
wiley +1 more source
Upconversion-like Photolysis of BODIPY-Based Prodrugs via a One-Photon Process
, 2019 Photochemical reactions at lower energy than the absorption window are currently achieved by multi-photon processes, including two-photon absorption and photon upconversion, which have limited energy utilization efficiency.
Xin Lan (422210) +17 more
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, 2023 Photon upconversion from visible light to ultraviolet (UV) light is useful for various photochemical reactions such as artificial photosynthesis, but its efficiency has been low under practical film conditions.
Masanori, Uji +4 more
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PhotonicsFlexible upconversion (UC) devices, owing to their unique combination of high–efficiency optical energy conversion and mechanical flexibility, have attracted increasing attention in the fields of optoelectronics, wearable devices, flexible displays, and ...
Huijuan Chen, Weibo Feng, Tianling Qin
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