Results 71 to 80 of about 9,394 (232)

Enzymatic enhancing of triplet–triplet annihilation upconversion by breaking oxygen quenching for background-free biological sensing

Nature Communications, 2021
Triplet-triplet annihilation upconversion (TTA-UC) nanoparticles (NPs) are a promising material for diverse applications, but TTA-UC is sensitive to oxygen, which hinders its biological utility.
Ling Huang, Timmy Le, Kai Huang, Gang Han   +3 more
doaj   +1 more source

Neodymium‐Doped Nanocrystals for Sensing Cellular Temperature at the Nanoscale

Advanced Optical Materials, EarlyView.
Neodymium‐doped NaYF4 nanocrystals are engineered as bright, biocompatible nanothermometers for intracellular temperature mapping. Their ratiometric near‐infrared emission enables highly sensitive, nanoscale thermal readouts in living cells. Combined with gold nanostars for photothermal therapy, they reveal pronounced subcellular heating heterogeneity ...
Maria Bravo, Sandra Krzyzowska, Shelly Yang, Dingchen Wen, Jana Zielinski, Farsai Taemaitree, Samantha Zaman, Alastair Stewart, Susana Rocha, Paul Mulvaney, Hiroshi Uji‐i, Beatrice Fortuni, Sam Brooke, James Hutchison   +13 more
wiley   +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, Marie Celine Lefevre, Alessio Carmignani, Maria Cristina Ceccarelli, Matteo Battaglini, Attilio Marino, Gianni Ciofani   +6 more
wiley   +1 more source

Designing Stimuli‐Responsive Upconversion Nanoparticles that Exploit the Tumor Microenvironment

, 2020
Tailoring personalized cancer nanomedicines demands detailed understanding of the tumor microenvironment. In recent years, smart upconversion nanoparticles with the ability to exploit the unique characteristics of the tumor microenvironment for precise ...
Abida Raza, Mukherjee, A, Ovais, M, Das, D, Pramanik, A, Devlina Das, Chunying Chen, Muhammad Ovais, Mukherjee, S, Arindam Pramanik, Chen, C, Raza, A, Sudip Mukherjee, Anubhab Mukherjee   +13 more
core   +1 more source

Excitation pulse duration response of upconversion nanoparticles and its applications

, 2022
Lanthanide-doped upconversion nanoparticles (UCNPs) have rich photophysics exhibiting complex luminescence kinetics. In this work, we thoroughly investigated the luminescence response of UCNPs to excitation pulse durations.
Agren, Hans, Liu, Haichun, Kostiv, Uliana, Li, Yuanyuan, Liu, Qingyun, Labrador Páez, Lucía, Widengren, Jerker   +6 more
core   +1 more source

Dumbbell‐Structured Plasmonic‐Enhanced Optical Nanoprobes Boosting Photo‐Magnetic‐Acoustic Multimodal Imaging‐Guided Photodynamic‐Photothermal Synergistic Treatment and Immunogenic Death in Nasopharyngeal Carcinoma

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, Yubiao Yang, Wen Han, Yi Tang, Chengxin Yao, Fuli Zhao, Wenxiao Fang, Jinjie Li, Xiaolan Huo, Yiqian An, Yuanzhi Shao, Botao Gao, Jinchang Yin   +12 more
wiley   +1 more source

Paving Metal–Organic Frameworks with Upconversion Nanoparticles via Self-Assembly

, 2018
The combination of metal–organic frameworks (MOFs) and luminescent nanomaterials with upconversion characteristics could enable the development of new nanomaterials and applications in information security, optical sensing, and theranostics.
Min Lu (238723), Ling Huang (51752), Wei Huang (36889), Xiaoji Xie (1437985), Ze Yuan (3911458), Shaozhou Li (1644946), Weina Zhang (128757), Yue Pan (267516), Lu Zhang (50563)   +8 more
core   +2 more sources

Light‐Switched Mesenchymal Stem Cells for In Situ Exosome Amplification in Craniofacial Bone Defect Reconstruction

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, Yajing Liu, Shuman Wang, Xiaoming Bai, Luyun Zhang, Yuwei Liu, Zhiwen Fu, Chen Shi   +7 more
wiley   +1 more source

Towards new visible light sources utilizing upconversion nanoparticles [PDF]

, 2017
This work is devoted to the study of the luminescent properties of upconversion nanoparticles and optical fibers doped with upconversion nanoparticles. The host matrices of the two types of investigated nanoparticles refer to oxides and fluorides.
Fedotov, Andrei
core  

Material Strategies for Stimulation and Recording in Neural Biocomputing Platforms

Advanced Electronic Materials, EarlyView.
Material strategies enabling stimulation and recording are central to neural biocomputing systems. This review examines how electronic materials govern the encoding of inputs and decoding of outputs in living neural networks. Advances in electrical, optical, and multimodal interfaces highlight emerging design principles for biocomputing platforms ...
Sehong Kang, Junggeon Park, Aryaman Joshi, Rakid Haque, Gyu Weon Hwang, Hyunjoon Kong   +5 more
wiley   +1 more source