Results 101 to 110 of about 19,709 (232)

Upconversion Modulation through Pulsed Laser Excitation for Anti-counterfeiting

Scientific Reports, 2017
Lanthanide-doped upconversion nanomaterials are emerging as promising candidates in optoelectronics, volumetric display, anti-counterfeiting as well as biological imaging and therapy.
Yingdong Han, Hongyu Li, Yangbo Wang, Yue Pan, Ling Huang, Feng Song, Wei Huang   +6 more
doaj   +1 more source

Programmable luminescent platform based on carbon quantum dots enables wavelength‐multiplexed optical data storage and encryption

FlexMat, EarlyView.
A carbon‐quantum‐dots (CQDs)‐based programmable luminescent platform is proposed for multidimensional optical information encryption and high‐capacity data storage by leveraging wavelength‐division multiplexing. Furthermore, a prototype tri‐layer optical disk is demonstrated, where data written via laser ablation on different CQD layers are retrieved ...
Honglei Sun, Qingfeng Gui, Yunsong Di, Zihan Ying, Siqi Liu, Mengqi Li, Meng Zhang, Lun Yang, Yushen Liu, Zhixing Gan   +9 more
wiley   +1 more source

Enhancing the Sensitivity of Colorimetric Aptasensor Through Cd2+‐Thymine Interactions in ssDNA Loops for Food Contaminant Detection

Food Safety and Health, EarlyView.
This picture illustrates a novel aptamer‐based colorimetric assay, which demonstrates that high sensitivity, selectivity, and reliability for the rapid detection of cadmium ions (Cd2+) in water. Molecular dynamics (MD) simulations have revealed that the complexes are more stable, with Cd2+ binding more tightly to the thymine (T) within the aptamer loop.
Xuyan Li, Xinyu Ni, Yue Li, Xusheng Li, Dongbao Cai, Jianxia Sun, Chao Wang, Weibin Bai   +7 more
wiley   +1 more source

Active Shell Engineering for Efficient Cascade Triplet Energy Transfer in Lanthanide Heterostructures

Angewandte Chemie, Volume 138, Issue 14, 27 March 2026.
Active shell engineering resolves the trade‐off between surface passivation and molecular sensitization in lanthanide nanoparticles. NaYbF4@Ca0.8F2:Nd0.2@ACA heterostructures transform inert shells into energy conduits, enabling cascade triplet transfer with near‐unity efficiency.
Zhao Jiang, Alasdair Tew, Xinjuan Li, Huangtianzhi Zhu, Yunzhou Deng, Caterina Ducati, Zhongzheng Yu, Akshay Rao   +7 more
wiley   +2 more sources

Recent Advances in Photonic Bound States in the Continuum: From Fundamentals to Engineering and Implementation

Laser &Photonics Reviews, EarlyView.
This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley   +1 more source

Polyaniline-coated upconversion nanoparticles with upconverting luminescent and photothermal conversion properties for photothermal cancer therapy

International Journal of Nanomedicine, 2016
Yadong Xing, Luoyuan Li, Xicheng Ai, Limin Fu Department of Chemistry, Renmin University of China, Beijing, People’s Republic of China Abstract: In this study, we developed a nanosystem based on upconversion nanoparticles (UCNPs) coated with a ...
Xing YD, Li LY, Ai XC, Fu LM
doaj  

Cascade upconversion: a strategy enabling four-photon lithography in weak light intensity

Nature Communications
Multiphoton lithography offers the minimum feature size available in submicron scale true 3D printing, but excessive femtosecond laser intensity prevents it from leading to higher photon counts.
Shishuo Li, Kai Li, Chenqi Yi, Xingyu Gao, Zongsong Gan   +4 more
doaj   +1 more source

Hydrogels Incorporating Donor–Acceptor Stenhouse Adducts as a Platform for Photoinduced, On‐Off Switchable Release of Small Molecule Cargos

Macromolecular Rapid Communications, EarlyView.
Donor–acceptor Stenhouse aDdducts (DASAs) are known for their photoinduced tautomerization, which, when conjugated to block copolymers, can self‐assemble into tuneable polymersomes. These DASA‐polymersomes are being investigated for light‐controlled cargo release in biomedical applications.
Tristan N. Dell, Ana Cammack‐Najera, Rea Tresa, Farzina Matubbar, Beyzanur Kaya, Uthaya Lathan, Mohamed Chami, Ray G. DiNardi, Omar Rifaie‐Graham, Jonathan P. Wojciechowski, Molly M. Stevens   +10 more
wiley   +1 more source

Yb2‐Tb Upconversion in a Hetero‐Trimetallic Molecular Lanthanide Complex

Angewandte Chemie, Volume 138, Issue 13, 23 March 2026.
Lanthanides are at the forefront of photon upconversion in molecular systems; however, the chemical nature of the lanthanides makes site‐specific coordination chemistry difficult to achieve. Here, we employ kinetically stabile building blocks to achieve hetero‐trimetallic 4f complexes with complete site‐specific chemical control.
Nicolaj Kofod, Matthew E. Thornton, Abigail Richardson, Charles Smith, Sabina Gurung, Patrick Parkinson, Stephen Faulkner, Sam Hay, Louise S. Natrajan   +8 more
wiley   +2 more sources

The scale matters: A review on stimuli‐responsive microrobots categorized by scale for biomedical applications

Responsive Materials, EarlyView.
We systematically summarize how each scale dictates fundamental choices in design feature, manufacturing technology, driving mechanism, and control strategy, which are inherently governed by scale‐dominated physical principles. Furthermore, the application of scale‐determined operation modes of microrobots across different stages of medical ...
Hang Yin, Yujing Li, Guanghao Wu, Yubing Guo   +3 more
wiley   +1 more source