Results 81 to 90 of about 99,359 (307)

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

Carrier Diffusion Links Single Crystal Quality and Photoluminescence in Halide Perovskite Radiation Detectors

Advanced Materials, EarlyView.
By tracking bulk carrier diffusion both vertically and laterally, this study links photoluminescence behavior to crystal quality in CsPbBr3 γ‐ray detectors. Vertical diffusion governs spectral redshift, with high‐quality crystals exhibiting superior transport, while two‐photon microscopy reveals microscale defects that hinder diffusion in low‐quality ...
Zimu Wei, Khasim Saheb Bayikadi, Capucine Mamak, Milos Dubajic, Chieh‐Szu Huang, Linfeng Pan, Mercouri G. Kanatzidis, Samuel D. Stranks   +7 more
wiley   +1 more source

Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation

Nature Communications, 2017
Auger processes are at the core of electron emission in solid-state physics, however measuring the spectra of electrons emitted solely as a result of Auger transitions remains a challenge.
V. A. Chirayath, V. Callewaert, A. J. Fairchild, M. D. Chrysler, R. W. Gladen, A. D. Mcdonald, S. K. Imam, K. Shastry, A. R. Koymen, R. Saniz, B. Barbiellini, K. Rajeshwar, B. Partoens, A. H. Weiss   +13 more
doaj   +1 more source

Challenges of II‐VI and III‐V Blue Quantum Dot Light‐Emitting Diodes

Advanced Materials, EarlyView.
Blue‐emitting electroluminescent quantum dot light‐emitting diodes (QD‐LEDs) face critical challenges that limit their practical application, including short operational lifetimes, low color purity, broad spectral linewidths, and unpredictable transient effects like blinking and positive aging.
Shaun Tan, Jonah R. Horowitz, Oliver J. Tye, Moungi G. Bawendi   +3 more
wiley   +1 more source

Tuning the Surface State and Zeta Potential of Aged CuO Nanoparticles by Additive‐Free Surface Treatments as Guided by XPS

Advanced Materials, EarlyView.
Aging of CuO nanoparticles (NP) involves a surface reconstruction induced by hydroxylation and concurrent organic‐O adsorption, which introduces O defects in the NP subsurface region. The defective surface results in a diffuse surface space region, as reflected by a low ζ‐potential of the aged NPs in ethanol solvent.
Anastasia S. Batenkova, Bastian Rheingans, Claudia Cancellieri, Lars P.H. Jeurgens   +3 more
wiley   +1 more source

The Auger Raman Lidar: several years of continuous observations

EPJ Web of Conferences, 2019
The Raman lidar at the Central (Raman) Laser Facility of the Pierre Auger Observatory in Argentina, has been operational since September 2013. In this paper, the Auger Raman Lidar performance is discussed in terms of the data quality for the assessment ...
Rizi Vincenzo, Hernandez Carlos Medina, Iarlori Marco, Pietropaolo Ermanno   +3 more
doaj   +1 more source

Revealing the Neglected Role of Passivation Layers of Current Collectors for Solid‐State Anode‐Free Batteries

Advanced Materials, EarlyView.
An in situ X‐ray absorption spectroscopy experiment revealed that the surface passivation layers on copper and stainless steel interact with the sulfide‐based solid‐state electrolyte upon contact, leading to the formation of various interfacial species.
Yijia Wang, Bibin Jose, Yi Yuan, Aadharshini Ganesh, Rina Muhammad Faisal, Ka Ho Chan, Jack Bekou, Lijia Liu, Payam Kaghazchi, Yang Zhao   +9 more
wiley   +1 more source

Harnessing Self‐Sensitized Scintillation by Supramolecular Engineering of CsPbBr3 Nanocrystals in Dense Mesoporous Template Nanospheres

Advanced Materials, EarlyView.
Perovskite CsPbBr3 nanocrystals exhibit bright emission, fast response, and solution processability, but their nanoscale size limits efficient radiation detection. Organizing them into porous SiO2 mesospheres enhances radioluminescence up to 40 times, achieving an optimal combination of light yield, fast scintillation, and processability, providing a ...
Xiaohe Zhou, Matteo L. Zaffalon, Emanuele Mazzola, Andrea Fratelli, Francesco Carulli, Chenger Wang, Mengda He, Francesco Bruni, Saptarshi Chakraborty, Leonardo Poletti, Francesca Rossi, Luca Gironi, Francesco Meinardi, Liang Li, Sergio Brovelli   +14 more
wiley   +1 more source

Manganese‐Based Spinel Cathodes: A Promising Frontier for Solid‐State Lithium‐Ion Batteries

Advanced Materials, EarlyView.
Mn‐based spinel cathodes LiMn2O4 (LMO) and LiNi0.5Mn1.5O4 (LNMO), with the unique characteristics of low cost, structural stability, and 3D Li‐ion diffusion channels, have presented great potential in all‐solid‐state batteries. Here, a comprehensive understanding and valuable insights into the rational design and implications for the future development
Yu Dou, Shiyuan Zhou, Jeremy I. G. Dawkins, Karim Zaghib, Khalil Amine, Gui‐Liang Xu, Sixu Deng   +6 more
wiley   +1 more source

FIELD INVESTIGATIONS OF DEFORMATIONS IN SOFT SURROUNDING ROCKS OF ROADWAY WITH ROOF-BOLTING SUPPORT BY AUGER MINING OF THIN COAL SEAMS

Rudarsko-geološko-naftni Zbornik, 2022
Coal auger mining is a promising technology used for excavating thin coal seams. The efficiency of auger mining is largely related to the stability of mine roadways in the influence zone of the coal-face.
Ivan Sakhno, Svitlana Sakhno, Alla Skyrda   +2 more
doaj