Article
Physics, Applied
Xianhe Liu, Yi Sun, Yakshita Malhotra, Ayush Pandey, Yuanpeng Wu, Kai Sun, Zetian Mi
Summary: This study focuses on InGaN nanowire green light emitting diodes (LEDs) with lateral dimensions varying from about 1 to 10 micrometers. The research shows that a maximum external quantum efficiency of around 5.5% can be achieved for devices with an areal size of about 3 x 3 micrometers without any packaging. By optimizing light extraction efficiency, reducing point defect formation, and controlling electron overflow, the external quantum efficiency of InGaN nanowire micro-LEDs has the potential to reach 30%-90%.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Mohamed S. S. Abdelkhalik, Aleksandr Vaskin, Toni Lopez, Anton Matthijs Berghuis, Aimi Abass, Jaime Gomez Rivas
Summary: This study introduces the use of plasmonic metasurfaces to control the emission directionality and enhance the collection efficiency of LEDs. The proposed mechanism relies on the near-field coupling between quantum wells and periodic arrays of aluminum nanodisks. Experimental results show that integrating metasurfaces in LED wafers can increase the collected outcoupled light intensity by a factor of 5. The proposed approach does not require secondary optics or postetching of GaN, making it a potential candidate for enhancing light emission from micro-LEDs.
Review
Polymer Science
Shaw L. Hsu, Jigneshkumar P. Patel, Weiwei Zhao, Ruixia Li, Dacheng Wu
Summary: Organic-inorganic composites have important applications in bonded abrasives, demonstrating superior mechanical properties and stability achieved by incorporating inorganic particles into a crosslinked matrix of phenolic resin. Environmentally appropriate wetting liquids have been developed to achieve uniform dispersion of reacting components, enhancing the mechanical properties of the resulting composites. Characterization techniques, including low-field nuclear magnetic resonance, have been used to study the curing process and changes in mechanical properties at the molecular level.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Rheumatology
Nishanthi Thalayasingam, Kelly Baldwin, Claire Judd, Wan-Fai Ng
Summary: Sjögren's Syndrome (SS) is a chronic autoimmune disease characterized by lymphocytic infiltration of exocrine glands and B-cell dysfunction. Current treatment strategies provide only symptomatic relief, with no proven methods to alter disease progression or treat systemic manifestations. Recent studies are focusing on alternative strategies to target B-cells, with the need to stratify patients and use sensitive outcome measures in clinical trials.
Article
Biotechnology & Applied Microbiology
Shuaixuan Ying, Zhenru Guan, Polycarp C. Ofoegbu, Preston Clubb, Cyren Rico, Feng He, Jie Hong
Summary: This review evaluates the current developments in green synthesis of nanoscale metals, highlighting the advantages and limitations of this method compared to chemical synthesis, and discussing its potential applications in environmental protection and human health.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Materials Science, Multidisciplinary
Ming Tian, Cangmin Ma, Tao Lin, Jianping Liu, Devki N. Talwar, Hui Yang, Jiehua Cao, Xinying Huang, Wenlong Niu, Ian T. Ferguson, Lingyu Wan, Zhe Chuan Feng
Summary: Exciton localization phenomena were investigated in InGaN/GaN multiple-quantum-well structures with discrete quantum dots, showing enhanced localization within the dots and the impact of free carrier recombination. Non-exponential decay in TRPL measurements was explained using a model incorporating localized exciton, non-radiative, and free carrier recombination rates, proposing a new method to calculate internal quantum efficiency.
JOURNAL OF MATERIALS SCIENCE
(2021)
Review
Biochemistry & Molecular Biology
Mariana Verdelho Machado
Summary: Celiac disease (CD) is a common autoimmune disease, affecting approximately 1% of the population. Regardless of symptoms, all CD patients must adhere to a lifelong gluten-free diet (GFD). However, this can be challenging due to a lack of gluten awareness in foods and the widespread use of gluten in processed foods. Research has been conducted to find pharmacological treatment for CD, but achieving full histological recovery on a GFD remains difficult.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Sixiang Wang, Yichang Wang, DaeHo Yoon, Tianrong Li, Yuhua Wang
Summary: In this study, a sub-micrometer green phosphor was successfully prepared by doping Mn2+ in a small-sized organic-inorganic hybrid Zn(ii) bromide (C8H20N)2ZnBr4. The resulting (C8H20N)2Zn0.7Mn0.3Br4 exhibited a particle size around 700 nm, an emission peak at 517 nm with a narrow full width at half maximum of 47 nm, a high photoluminescence quantum yield of about 80%, and a stable photoluminescence intensity under continuous UV-light illumination for 30 days. These findings highlight the potential of (C8H20N)2Zn0.7Mn0.3Br4 as a valuable candidate for Mini-LEDs and Micro-LEDs.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Optics
Lei Wang, Lai Wang, Chien-Ju Chen, Kai-Chia Chen, Zhibiao Hao, Yi Luo, Changzheng Sun, Meng-Chyi Wu, Jiadong Yu, Yanjun Han, Bing Xiong, Jian Wang, Hongtao Li
Summary: In this study, InGaN quantum dots were proposed as the active region of micro-LEDs to address efficiency and bandwidth limitations. The results showed that utilizing InGaN QDs can provide a solution for higher efficiency and wider bandwidth micro-LEDs in display and VLC applications.
LASER & PHOTONICS REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Chandni Kumari, Amalesh Kumar, S. K. Sharma, J. Manam
Summary: In this study, Er3+ doped Sr3LiSbO6 ceramic phosphors were successfully synthesized and their microstructure, luminescence properties, and optical performance were analyzed. The results showed that the phosphors exhibited good up-conversion and down-conversion characteristics, making them suitable for green components in LEDs and solar cell applications.
Article
Optics
Mengyuan Zhanghu, Byung-Ryool Hyun, Fulong Jiang, Zhaojun Liu
Summary: An investigation into the electrical and optical properties of InGaN micro-scale LEDs emitting at around 530 nm was conducted. The study found that micro-LEDs with sizes of 80, 150, and 200 μm demonstrated excellent device performance, achieving over 10% external quantum efficiency and wall-plug efficiency, as well as ultra-high brightness. Additionally, it was observed that smaller devices with better current spreading exhibited higher efficiency and brightness. Superior green micro-LEDs can serve as a crucial guarantee for various applications.
Editorial Material
Cell Biology
Stefan H. A. Hoogland, Hendrik Marks
Summary: The study revealed the dynamic progression of pluripotency in mouse embryonic cells, which transition from a naive to a primed pluripotent state in approximately four days. The in vitro capture of formative pluripotent stem cells highlights an intermediate pluripotent state previously unknown in the progression of pluripotency.
Article
Gastroenterology & Hepatology
Jean-Francois Dufour, Quentin M. Anstee, Elisabetta Bugianesi, Stephen Harrison, Rohit Loomba, Valerie Paradis, Herbert Tilg, Vincent Wai-Sun Wong, Shira Zelber-sagi
Summary: Non-alcoholic steatohepatitis is becoming the most important etiology for advanced liver disease. Significant progress has been made in this field in recent years, with better understanding of the complexity of the pathophysiology of NASH and testing of multiple non-invasive biomarkers. The importance of lifestyles has been recognized and clinical trials of several drugs are underway. This review addresses the challenges faced by healthcare professionals in managing NASH patients.
Review
Engineering, Environmental
Preeti Rajoriya, Mayara C. S. Barcelos, Danielle C. M. Ferreira, Pragati Misra, Gustavo Molina, Franciele M. Pelissari, Pradeep K. Shukla, Pramod W. Ramteke
Summary: Green synthesis is a valuable and emerging method for the synthesis of nanoparticles, with the exploration of plant diversity being used for rapid preparation of silver nanoparticles while maintaining the green principle over conventional methods.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Rheumatology
Asim Ghouri, Jonathan G. Quicke, Philip G. Conaghan
Summary: OA is a common and painful condition with limited therapies, leading researchers to explore new treatment methods and modify existing ones. While drugs like HCQ, MTX, anti-IL-6 have not shown significant improvements for hand OA, IL-1 remains a promising target for large-joint OA. Targeting the peripheral nociceptive pathway and nerve growth factor have shown efficacy, with ongoing development of new inhibitors. Limited evidence suggests pharmacological therapies may modify structural progression, but more research is needed for symptom benefits.
