Results 61 to 70 of about 40,546 (262)

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source

A study of the Morphology and Optical Properties of Electropolished Aluminum in the Vis-IR region

International Journal of Electrochemical Science, 2009
In this paper, the commercial pure aluminum specimens (Al 99.3 %) are electropolished in an acidic electrolyte. The morphology, reflection, and roughness of the specimens are investigated. Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX),
H. Adelkhani, S. Nasoodi, A.H. Jafari
doaj   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

Advanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami, Hengzhe Ren, Erqian Dong, Ashkan Ghanbarzadeh‐Dagheyan, Chen Shen   +4 more
wiley   +1 more source

CONSTRUCTION OF A PARABOLIC SOLAR COLLECTOR AND COMPARATIVE STUDY OF THE PERFORMANCE OF ALUMINUM-COATED PELLICLE FILM AND ALUMINUM FOIL AS REFLECTING SURFACES [PDF]

Journal of Sustainable Energy, 2020
Most of the concentrators used in solar thermal systems are made from mirrors or metals with mirror or other highly reflective surfaces. Because mirror is the best reflecting surface for solar collectors and parabolic mirrors are expensive, people in the
OHAJIANYA, A. C.
doaj  

Metals in Metal Salts: A Copper Mirror Demonstration

Journal of Chemical Education, 2010
A simple lecture demonstration is described to show the latent presence of metal atoms in a metal salt. Copper(II) formate tetrahydrate is heated in a round-bottom flask forming a high-quality copper mirror.
openaire   +2 more sources

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

(Acetylacetone isonicotinoylhydrazonato-κ3O,N′,O′)dioxidovanadate(V) monohydrate

Acta Crystallographica Section E, 2010
The hydrazone anion in the title compound, [V(C11H12N3O2)O2]·H2O, is zwitterionic as its pyridyl N atom is protonated; the O, N and O′ atoms span the axial–equatorial–axial positions of the trigonal-bipyramidal ...
Hon Wee Wong, Kong Mun Lo, Seik Weng Ng
doaj   +1 more source

Spin Injection Of Exciton–Polaritons With Halide Perovskites At Room Temperature

Advanced Functional Materials, EarlyView.
A monolithic Tamm‐plasmon microcavity embedding a two‐dimensional halide perovskite enables room‐temperature spin injection of exciton‐polaritons under quasi‐resonant optical excitation. Polarization‐resolved spectroscopy reveals partial preservation of the injected spin in the lower polariton branch, while bare excitons remain fully depolarized.
Elena Sendarrubias Arias‐Camisón, Maksim Lednev, Jorge Cuadra, Raúl Gago, Luis Viña, Francisco José García Vidal, Johannes Feist, Ferry Prins, Carlos Antón Solanas   +8 more
wiley   +1 more source

Gap plasmonic properties of NPOM structures composed of gold nanoparticles and thin films

Scientific Reports
Metal nanoparticles have attracted great interest because of their unique near-field enhancement properties, and have important applications in many fields, such as surface-enhanced Raman scattering (SERS), fluorescence enhancement, solar cell efficiency
Feng Shan, Jingyi Huang, Chunjuan Tang, Lili Liu, Yanyan Zhu, Guohao Wei, Lina Liu, Yujun Wang, Yajie Wang, Qiubo Hu, Jia Liu   +10 more
doaj   +1 more source