Results 21 to 30 of about 150 (92)

Sistema para realização de medidas de luminescência com excitação por Raios X

Química Nova, 2011
In this work is presented a versatile system for X-ray excited optical luminescence (XEOL) measurements. The apparatus was assembled from a sample holder connected to an optical fiber responsibly for the acquisition of the scintillation signal.
Marco Aurélio Cebim, Higor Henrique de Souza Oliveira, Nilso Barelli, Marian Rosaly Davolos   +3 more
doaj   +1 more source

Mechanism of X-ray excited optical luminescence in NaGdF4-based nanoparticles

Results in Physics
X-ray irradiating rare-earth nanoparticles could emit fluorescence (∼50 keV) and luminescence (∼eV) photons simultaneously. Utilizing this phenomenon, it is expected to achieve online multi-modal imaging and integrated radiation and photodynamic therapy ...
Jiadan Song, Fanyuan Xu, Bang Yao, Hongbing Lu, Wenli Zhang, Liang Li   +5 more
doaj   +1 more source

Probing the exotic emission behaviors of Gd3+ ions in Gd3Ga5O12 wafer via X-ray excited optical luminescence

Results in Optics
We investigate the exotic emission behaviors of gadolinium gallium garnet (Gd3Ga5O12, GGG) wafer via X-ray absorption near edge structure (XANES) and X-ray excited optical luminescence (XEOL) in an X-ray nanoprobe beamline. The XANES spectra of the Gd L3
Tzu-Chi Huang, Wei-Lun Wei, Sunny Saurabh, Yu-Hao Wu, Chen-Wei Lin, Yi-Chen Li, Chien-Yu Lee, Bo-Yi Chen, Gung-Chian Yin, Mau-Tsu Tang, Wu-Ching Chou, Bi-Hsuan Lin   +11 more
doaj   +1 more source

Dual‐Rare‐Earth‐Doped Piezoelectric Semiconductor Gallate Solids With Spectral Tuning for Energy Conversion and Photonic Applications

Rare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Mechanoluminescent materials have gained significant attention for their unique capability to convert mechanical stimuli into light without external optical or electrical excitation, holding immense promise for applications in safety monitoring, biomedicine, optical anti‐counterfeiting, and intelligent sensing.
Fanlei Qin, Yujie Chen, Zhangyi Tian, Ange Zhu, Xianghua Zhang, Wasfa Zulfiqar, Denghao Li, Yang Zhang, Gongxun Bai   +8 more
wiley   +1 more source

Cooperative Atomic Mechanism of Emergent Tilted Magnetic Anisotropy

Advanced Electronic Materials, Volume 11, Issue 21, December 17, 2025.
This study reveals a novel atomic mechanism behind magnetic anisotropy, where single‐ion anisotropy at dilute atomic sites establishes a long‐range anisotropic magnetic order via exchange interaction. The resulting exchange‐induced anisotropy contributes comparably to the single‐ion anisotropy, offering a promising strategy for engineering magnetic ...
Brajagopal Das, Cinthia Piamonteze, Lior Kornblum   +2 more
wiley   +1 more source

Addressing Inherent Challenges to Chemical Relithiation of Cycled End‐of‐Life Cathode Materials

Advanced Energy Materials, Volume 15, Issue 46, December 9, 2025.
The evolution of fluorine surface species is tracked during a low‐temperature redox mediator relithiation process for direct recycling of cycled NMC 622. A washing step is presented as a solution for mediating adverse effects of surface contamination. Redox mediator relithiation is shown to be a rapid, efficient method that can be applied to cycled NMC
Cyrus Kirwa, Evelyna Wang, Seoung‐Bum Son, Juliane Preimesberger, Fulya Dogan Key, Yaocai Bai, Krzysztof Pupek, Hongmei Luo, Matthew Keyser, Jaclyn Coyle   +9 more
wiley   +1 more source

Emerging applications of rare‐earth fluoride nanocrystals in medicine and biotechnologies

Responsive Materials, Volume 3, Issue 4, November 2025.
Rare‐earth fluoride nanocrystals (REFNCs) exhibit high responsivity and can be used as multi‐modal agents in medicine and theranostics. This review summarizes recent advances in REFNCs, covering their synthesis, structures, luminescent properties, and applications in multi‐modal imaging and photodynamic therapy, highlighting their theranostic potential
Alain Tressaud, Zhichao Wang, Yuqi Tang, Quan Li   +3 more
wiley   +1 more source

Investigation of X-ray excited optical luminescence properties of Er, Nd-doped YVO4 phosphors using a hard X-ray beam

Optical Materials: X
Scintillators based on YVO4:Er3+ and YVO4:Er3+, Nd3+, synthesized through glucose-assisted sol-gel method and calcined under different temperatures were studied via X-ray excited optical luminescence (XEOL). The samples' crystalline structure was studied
Francisca J.R. Tavares, Matheus S.C. de Oliveira, Ariosvaldo J.S. Silva, Iara de F. Gimenez, Verônica C. Teixeira, Nilson S. Ferreira, Marcos V. dos S. Rezende   +6 more
doaj   +1 more source

Proving Optical Anisotropy and Polarization Effects in β‐Ga2O3$\left(\text{Ga}\right)_{2} \left(\text{O}\right)_{3}$ Nanomembranes via X‐Ray Excited Optical Luminescence

Advanced Photonics Research, Volume 6, Issue 10, October 2025.
In this study, the pronounced anisotropy in the optical properties of β‐Ga2O3 nanomembranes has been analized under a synchrotron nanoprobe. We have investigated the site‐specific contributions of distint Ga ions to the emission bands by combining polarization‐dependent X‐ray absorption near‐edge structure and X‐ray excited luminescence.
Paula Pérez‐Peinado, Jaime Dolado, Pedro L. Alcázar Ruano, Daniel Carrasco, Ruth Martínez‐Casado, Valentina Bonino, Gema Martínez‐Criado, Jani Jesenovec, John S. McCloy, Francisco Domínguez‐Adame, Jorge Quereda, Emilio Nogales, Bianchi Méndez   +12 more
wiley   +1 more source

Microwave‐Facilitated Sensitization Route Boosting Efficiency, Thermostability, and Multifunction of Nanophosphors

Aggregate, Volume 6, Issue 10, October 2025.
A microwave‐facilitated sensitization engineering is proposed to construct new NSYP:Ce,Tb NPs with less oxygen vacancy, suppressing energy loss of Ce sensitizers and transferring more energy to Tb activators. As a result, the Ce sensitization for Tb achieves ultrahigh ET efficiency (92.6%), contributing to high IQE of 82.2%, along with outstanding ...
Conglin Liu, Yubin Wang, Ran Li, Guanhao Zhou, Asif Ali Haider, Xiaoting Huang, Xiaoyang Zhao, Yue Qin, Hong Li, Hongming Jiang, Junpeng Li, Dandan Gao, Jiyang Xie, Pengfei Zhang, Lei Lei, Jing Zhu   +15 more
wiley   +1 more source