Results 51 to 60 of about 36,694 (225)

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

Uniaxial Strain Tuning of Upconversion Photoluminescence in Monolayer WSe2

Advanced Photonics Research
Strain engineering is one of the leading mechanical ways to tune the optical properties of monolayer transition metal dichalcogenides among different techniques.
Shrawan Roy, Xiaodong Yang, Jie Gao
doaj   +1 more source

Enhancing Optical Up-Conversion Through Electrodynamic Coupling with Ancillary Chromophores [PDF]

, 2014
In lanthanide-based optical materials, control over the relevant operating characteristics–for example transmission wavelength, phase and quantum efficiency–is generally achieved through the modification of parameters such as dopant/host combination ...
Andrews D. L., Andrews D. L., Andrews D. L., Andrews D. L., Boivin D., Cao B. S., Chatterjee D. K., Chen G., Chen J., Cheng Y. Y., Craig D. P., Daniels G. J., David L. Andrews, Desirena H., Diaz-Torres L. A., Dong H., Dávila Romero L. C., Ford J. S., Fujii M., Grynberg G., Guo H., Haase M., Herter B., Huang X., Jamie M. Leeder, Jenkins R. D., Jiang T., Kim J. W., Krämer K. W., Li C., Li C., Lin M., Lock M. P. E., Lupei A., Luu Q., Mai H.-X., Salam A., Salam A., Salam A., Scholes G. D., Sun Q.-C., Sun Y., Suyver J. F., Wagnière G., Wang F., Wang F., Wang H., Wang J., Xu Y., Zhang C., Zhang W.   +50 more
core   +1 more source

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

Advanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang, Jingguo Qu, Tonghuan Xiao, Xinyang Han, Michael Tin‐Cheung Ying   +4 more
wiley   +1 more source

Microscale Self-Assembly of Upconversion Nanoparticles Driven by Block Copolymer

Frontiers in Chemistry, 2020
Lanthanide-based upconversion nanoparticles can convert low-energy excitation to high-energy emission. The self-assembled upconversion nanoparticles with unique structures have considerable promise in sensors and optical devices due to intriguing ...
Qianqian Su, Qianqian Su, Meng-Tao Zhou, Ming-Zhu Zhou, Qiang Sun, Taotao Ai, Yan Su   +6 more
doaj   +1 more source

NIR-II Upconversion Photoluminescence of Er3+ Doped LiYF4 and NaY(Gd)F4 Core-Shell Nanoparticles

Frontiers in Chemistry, 2021
The availability of colloidal nano-materials with high efficiency, stability, and non-toxicity in the near infrared-II range is beneficial for biological diagnosis and therapy.
Qilong Feng, Wenjing Zheng, Jie Pu, Qiaoli Chen, Wei Shao   +4 more
doaj   +1 more source

Localized Temperature Monitoring in Mouse Brain during Light Delivery via a Non‐Planar Tapered Fiber‐Integrated µRTD Sensor

Advanced Materials, EarlyView.
We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena, Marco Bianco, Barbara Spagnolo, Muhammad Fayyaz Kashif, Alberto Bramati, Massimo De Vittorio, Ferruccio Pisanello   +6 more
wiley   +1 more source

Enabling Photon Upconversion and Precise Control of Donor–Acceptor Interaction through Interfacial Energy Transfer

Advanced Science, 2018
Upconverting materials have achieved great progress in recent years, however, it remains challenging for the mechanistic research on new upconversion strategy of lanthanides.
Bo Zhou, Long Yan, Lili Tao, Nan Song, Ming Wu, Ting Wang, Qinyuan Zhang   +6 more
doaj   +1 more source

Analysis of heat generation and thermal lensing in erbium 3-µm lasers [PDF]

, 2003
The influence of energy-transfer upconversion (ETU) between neighboring ions in the upper and lower laser levels of erbium 3-µm continuous-wave lasers on heat generation and thermal lensing is investigated.
Pollnau, Markus
core   +2 more sources

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

Advanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak, Changgyun Moon, Hyun‐Bin Yu, Sunkook Kim, Dong‐Hwan Kim   +4 more
wiley   +1 more source