Results 131 to 140 of about 19,577 (268)

JUDD-OFELT ANALYSIS OF Tb3+ AND UPCONVERSION STUDY IN Yb3+-Tb3+ CO-DOPED CALIBO GLASSES

Química Nova
We report on the study of the spectroscopic properties in Ytterbium-Terbium (Yb3+-Tb3+) co-doped calcium lithium borate (CaLiBO) glasses, with the study’s focus being on the upconversion process.
Idelma A. A. Terra, Luis J. Borrero-González, Juliana M. P. Almeida, Antonio C. Hernandes, Luiz A. O. Nunes   +4 more
doaj   +1 more source

Photochemical Upconversion: The Primacy of Kinetics

The Journal of Physical Chemistry Letters, 2014
Incoherent photochemical upconversion is a process by which low-energy light can be converted into a higher-energy form with promising applications in solar energy conversion and storage, photocatalysis, biological imaging, and photochemical drug activation.
Schmidt, TW, Castellano, FN
openaire   +3 more sources

Revolutionizing Healthcare With Paper‐Based Nucleic Acid Testing

Exploration, EarlyView.
This work summarizes strategies to enhance paper‐based devices for nucleic acid testing. Key approaches include optimizing paper platforms, improving nucleic acid amplification, and refining labeling/signaling methods. These advancements aim to boost sensitivity, speed, and usability, making paper‐based diagnostics more effective for point‐of‐care ...
Hong Zhang, Yi Yang, Heng Li, Xiaolin Hu, Hui Xiao, Dou Wang, Sergio Benardini, Wei Gu, Yang Luo   +8 more
wiley   +1 more source

Pr³⁺ Visible to Ultraviolet Upconversion for Antimicrobial Applications

Nanomaterials
This paper addresses the upconversion of blue light to ultraviolet-C (UVC) with Pr3+-activated materials for antibacterial applications of UVC. It discusses the processes through which UV radiation provides biocidal effects on microorganisms, along with ...
Miroslav D. Dramićanin, Mikhail G. Brik, Željka Antić, Radu Bănică, Cristina Mosoarca, Tatjana Dramićanin, Zoran Ristić, George Daniel Dima, Tom Förster, Markus Suta   +9 more
doaj   +1 more source

Enhancing Optogenetics‐Based Cancer Therapy Via Nanotechnology

Exploration, EarlyView.
Nanotechnology enhances optogenetics‐based cancer therapy through improved delivery systems and non‐invasive optical regulation. It further enables precise and programmable control of optogenetic living therapeutics for localized antitumor responses.
Honggang Shen, Wenzhe Yi, Rongzhang Li, Shuangshuang Hu, Xindi Qian, Dan Yan, Qian Zou, Guanru Wang, Yaping Li   +8 more
wiley   +1 more source

Continuous‐wave, fourfold upconversion laser [PDF]

, 1993
We report a new Er3+:LiYF4 cryogenic upconversion laser pumped by a fourfold upconversion process. Excitation at 1.5 μm results in laser emission at 701.5 nm on a transition with an upper state at nearly four times the pump photon energy.
P. Xie, Rand, Stephen C., S. C. Rand, Xie, Ping   +3 more
core   +1 more source

Optimized NaYF₄: Er³⁺/Yb³⁺ Upconversion Nanocomplexes via Oleic Acid for Biomedical Applications

Inorganics
This study presents the synthesis of NaYF4: Er3+/Yb3+ upconversion luminescent nanomaterials using a wet chemistry method. The role of oleic acid in influencing the size, shape, and luminescent properties of the materials was also investigated.
Ha Thi Phuong, Le Thi Vinh, Tong Quang Cong, Tran Quoc Tien, Nguyen Duc Van, Vu Thi Hong Ha, Vu Ngoc Phan, Le Thi Hoi, Pham Duc Thang, Do Thi Thao, Tran Thu Huong   +10 more
doaj   +1 more source

Brain–Computer Interfaces: The Dawn of a New Era in Disease Treatment

Exploration, EarlyView.
This study investigates the potential of brain–computer interface (BCI) technology in treating neuropsychiatric disorders, such as movement and communication barriers. Our review examines the history, signal paradigms, and diverse applications of BCI while also discussing ongoing research into novel materials and emerging technologies that offer ...
Yuqi Feng, Wangzheqi Zhang, Jun Chen, Huang Wu, Lei Wu, Yanhao Qiu, Xiaoming Deng, Chenglong Zhu, Yisheng Chen, Zhijie Zhao, Changli Wang, Xiaomin Zhang   +11 more
wiley   +1 more source

Upconversion of Rare Earth Nanomaterials

, 2015
Rare earth nanomaterials, which feature long-lived intermediate energy levels and intraconfigurational 4f-4f transitions, are promising supporters for photon upconversion.
Dong, Hao, Zhang, Pei-Zhi, Sun, Ling-Dong, Yan, Chun-Hua   +3 more
core   +1 more source

Narrowband Macrocycles: A New Paradigm for High‐Color‐Purity Organic Light‐Emitting Diodes

FlexTech, EarlyView.
This graphical abstract illustrates two key strategies for constructing macrocyclic multi‐resonance (MR) emitters for high‐performance OLEDs: (1) the covalent assembly of MR moieties onto macrocyclic scaffolds, and (2) the local multi‐resonance strategy within the macrocyclic backbone.
Zhongbo Xiang, Haowen Li, Lian Duan, Yuewei Zhang   +3 more
wiley   +1 more source