Results 81 to 90 of about 74,000,885 (282)

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Enhanced Corrosion Resistance of Anodic Films Containing Alumina Nanoparticles on as-rolled AZ31 alloy

International Journal of Electrochemical Science, 2018
In this work, the samples of magnesium alloy AZ31 were anodized in two kinds of electrolytes, each with and without alumina nanoparticles. The structure, morphology and composition of four kinds of films were characterized using X-ray diffraction (XRD ...
Ying Long, Liang Wu, Zhi Zhang, Andrej Atrens, Fu sheng Pan, Aitao Tang, Gen Zhang   +6 more
doaj   +1 more source

Phase‐Engineered MoS2 Quantum Monolayer Catalysts

Advanced Materials, EarlyView.
A new type of catalyst model—phase‐engineered MoS2 quantum‐monolayer catalyst (∼0.8 nm thick, < 6 nm in the lateral size; switchable freely among metallic 1T, semiconducting 2H, and a hybrid phase of metallic‐semiconducting 1T‐2H)—is reported. It can efficiently and stably drive photochemical H2, syngas and ammonia synthesis as a catalyst or co ...
Ruijie Yang, Yingying Fan, Lillian Pernitsky, Mojtaba Ebrahimian Mashhadi, Ningxin Chen, Md. Mehadi Hassan, Zheng Li, Heng Zhao, Liang Mei, Zhiyuan Zeng, Zhangxing Chen, Jinguang Hu, Qingye Lu   +12 more
wiley   +1 more source

Nanohardness and wear behavior of Copper-SiC-CNTs nanocomposites [PDF]

FME Transactions, 2020
This study highlights the influence of carbon nanotubes (CNT) and silicon carbide (SiC) particles on microstructure, nanohardness and tribological behavior of copper nanocomposites.
Mallikarjuna H.M., Siddaraju C., Kumar H.S. Sunil, Koppad Praveennath G.   +3 more
doaj  

Ionic Cocrystal Programming of Spatial Ionic Organization in Carbon Nitrides Enables Highly Efficient H2O2 Photosynthesis

Advanced Materials, EarlyView.
Ionic cocrystal‐programmed ionic organization establishes a general strategy for electrostatic programming in polymeric photocatalysts. ABSTRACT Controlling the spatial organization of ions in polymeric photocatalysts remains a fundamental challenge for optimizing charge transport and catalytic selectivity in solar‐driven hydrogen peroxide (H2O2 ...
Anna Lo Presti, Zahra Hajiahmadi, Sam A. J. Hillman, Mu Xiao, James R. Durrant, Thomas D. Kühne, Christian Mark Pelicano   +6 more
wiley   +1 more source

Wear Measuring and Wear Modelling Based on Archard, ASTM, and Neural Network Models [PDF]

, 2015
The wear measuring and wear modelling are a fundamental issue in the industrial field, mainly correlated to the economy and safety. Therefore, there is a need to study the wear measurements and wear estimation.
Pislaru, Crinela, Shebani, Amer
core   +2 more sources

MgF2 katkısının Vermikülit esaslı cam-seramiklerin işlenebilirlik özellikleri üzerine etkisi

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2017
The study deals with production of the glass-ceramics from natural raw material vermiculite. The machinability properties of the glass-ceramic compositions were investigated depending on vermiculite and MgF2 contents. The compositions containing 80 %, 85
Ediz Ercenk
doaj   +1 more source

In Situ Formation of a Highly Selective Nickel Single Atom Catalyst for Electrochemical CO2 Reduction to CO

Advanced Materials, EarlyView.
Development of a novel method for synthesizing Ni single atom catalysts for highly selective electrochemical CO2 reduction in situ. This catalyst achieves 100% selectivity for CO and is formed in an industrially relevant cell architecture. Using post‐mortem XRD, STEM, and EDS and operando XAS, the identity of the active site and the mechanism behind ...
Ian Street, Venkata Sai Sriram Mosali, Noah Sandberg, Fengyuan Shi, Deborah Myers, William E. Mustain   +5 more
wiley   +1 more source

Assessment of polytetrafluoroethylene composites for deep groove ball bearing applications through free run and rolling contact fatigue tests

Scientific Reports
Polytetrafluoroethylene (PTFE) is widely used in tribological applications. However, its usage in the ball-bearing application has not been explored.
Dhruv Deshwal, Sachin U. Belgamwar, Siddappa I. Bekinal   +2 more
doaj   +1 more source

Impact-contact dynamics in a disc-ball system

, 2013
International audienceThis paper concerns a disc-ball system, in which a moving ball collides against a disc resting on a rough, fixed horizontal surface.
Zhen, Zhao, Zhen Zhao, Caishan Liu, Bernard Brogliato, Liu, Caishan, Hongjian Zhang, Zhang, Hongjian, Brogliato, Bernard   +7 more
core   +1 more source