Results 131 to 140 of about 30,908 (277)

An Advanced High‐Performance Ultrafast Ammonium‐Ion Aqueous Battery Based on Dual‐Metal Redox Open Framework Molecular Magnet

Advanced Science, EarlyView.
The Prussian Blue Analogue molecular magnet KMnFeHCF is demonstrated as a high‐performance cathode for ultra‐fast aqueous ammonium‐ion batteries. A full cell using KMnFeHCF and graphite delivers ~71 mAh g−1 at 1.25 A g−1 and ~51 mAh g−1 at 2.2 A g−1, retaining 50% capacity after 1850 cycles. Its scalability, cycling stability, and low cost offer strong
Nilasha Maiti, Pramod Bhatt, Manoj K Sharma, Sher Singh Meena, Mayuresh D Mukadam, Soumen Samanta   +5 more
wiley   +1 more source

Scalable, Microwave‐Enabled Synthesis of Ternary WxTi1‐xO2 and Heterostructured TiO2‐WO3‐x Colloidal Nanocrystals: Carrier Dynamics and Photocatalytic Properties

Advanced Science, EarlyView.
Two microwave‐assisted synthetic methods, specifically a one‐pot and a seeded‐growth approach, are developed within a hydroalcoholic solution for the growth of single‐phase ternary WxTi1‐xO2 and heterostructured TiO2‐WO3‐x colloidal nanocrystals. Both types of nanocrystals show significant photocatalytic activity for 4‐methoxybenzyl alcohol oxidation ...
Riccardo Scarfiello, Michele Guizzardi, Angela Fiore, Armando Genco, Concetta Nobile, Elisabetta Perrone, Sara Fernanda Orsini, Clémentine Fellah, Lucian Roiban, Marianna Bellardita, Anna Maria Venezia, Giulio Cerullo, Leonardo Palmisano, Luigi Carbone   +13 more
wiley   +1 more source

Nanoscale x-ray imaging with high spectral sensitivity using fluorescence intensity correlations

Structural Dynamics
This paper introduces spectral incoherent diffractive imaging (SIDI) as a novel method for achieving dark-field imaging of nanostructures with heterogeneous oxidation states. With SIDI, shifts in photoemission profiles can be spatially resolved, enabling
Tamme Wollweber, Kartik Ayyer
doaj   +1 more source

Development of the multiplex imaging chamber at PAL-XFEL

Journal of Synchrotron Radiation
Various X-ray techniques are employed to investigate specimens in diverse fields. Generally, scattering and absorption/emission processes occur due to the interaction of X-rays with matter.
Junha Hwang, Sejin Kim, Sung Yun Lee, Eunyoung Park, Jaeyong Shin, Jae Hyuk Lee, Myong-jin Kim, Seonghan Kim, Sang-Youn Park, Dogeun Jang, Intae Eom, Sangsoo Kim, Changyong Song, Kyung Sook Kim, Daewoong Nam   +14 more
doaj   +1 more source

Gallium Nitride Semiconductor Resonant Tunneling Transistor

Advanced Science, EarlyView.
Three‐terminal GaN semiconductor resonant tunneling transistors (RTTs), which comprise an double‐barrier AlN/GaN/AlN resonant tunneling diode integrated with a GaN high‐electron‐mobility transistor (HEMT) through epitaxial growth in series and parallel configuraions, respectively.
Fang Liu, JunShuai Xue, GuanLin Wu, JinYuan Yuan, JiaJia Yao, RenJie Liu, Zhuang Guo, ZeHui Li, HaoRan Hu, WenBo Sun, Cheng Zhao, ChenKai Zhang, XinYan Liu, Kai Zhang, JinCheng Zhang, Yue Hao   +15 more
wiley   +1 more source

Achieving Fast Charging and Superior Cycling Stability Single‐Crystal Ni‐Rich Cathodes by Ultrafast Aqueous Washing

Advanced Science, EarlyView.
Prolonged water washing severely damages the surface layered structure of single‐crystal Ni‐rich cathodes, forming a thick rock‐salt barrier. In contrast, our 3‐min ultrafast washing removes residual lithium while confining surface reconstruction to an ultrathin 2–4 nm layer, thereby unlocking excellent fast‐charging and cycling stability.
Kaixin Liu, Jia Yang, Huaping Wang, Yongtao Tan, Dongdong Fan, Yongjian Cui, YunJian Liu, Xiaoyan Li, Hailong Wang   +8 more
wiley   +1 more source

Ultrafast time-resolved X-ray diffraction using an optimized laser-plasma based X-ray source

, 2013
Femtosecond X-ray pulses are invaluable tools to investigate the structural dynamics triggered by a femtosecond laser pulse. These ultrashort X-ray pulses can be provided by lab-sized laser-produced plasma X-ray sources. This thesis is dedicated to optimizing the X-ray emission from the X-ray source at the University of Duisburg-Essen and using this ...
openaire   +3 more sources

Free‐Volume Regulation Enables Significantly Enhanced Electrical Breakdown via Short‐Chain Molecular Spatial‐Positioning Intercalation into Poly(vinylidene fluoride)

Advanced Science, EarlyView.
An innovative molecular spatial‐positioning shimming strategy is developed to optimize the electrical properties of poly(vinylidene fluoride) (PVDF). By intercalating polyethylene wax (PE wax) short‐chain molecules into PVDF's free volume, the film achieves a significantly enhanced energy density of 32.67 J cm−3.
Ziyue Wang, Jiyang Xie, Wanbiao Hu
wiley   +1 more source

Imidazole Post‐Treated Self‐Assembled Monolayers for Inverted Perovskite Solar Cells

Advanced Science, EarlyView.
A post‐treatment strategy using imidazole derivatives (4,5‐DI and 4,5‐D‐2‐MI) enhances the Me‐4PACz/perovskite interface by improving wettability, promoting perovskite films, and optimizing energy level alignment, resulting in higher efficiency and improved stability in inverted perovskite solar cells.
Ihtesham Ghani, Shi Tingshu, Shehzad Ahmed, Zhuo Hongbin, Zhu Zirun, Yu Zhang, Peng You, Imran Muhammad, Tang Zeguo, Danish Khan   +9 more
wiley   +1 more source

Controlling 4f antiferromagnetic dynamics via itinerant electronic susceptibility

Physical Review Research
Optical manipulation of magnetism holds promise for future ultrafast spintronics, especially with lanthanides and their huge, localized 4f magnetic moments.
Sang-Eun Lee, Yoav William Windsor, Daniela Zahn, Alexej Kraiker, Kurt Kummer, Kristin Kliemt, Cornelius Krellner, Christian Schüßler-Langeheine, Niko Pontius, Urs Staub, Denis V. Vyalikh, Arthur Ernst, Laurenz Rettig   +12 more
doaj   +1 more source