Results 41 to 50 of about 148,707 (321)

Polishing of optical media by dielectric barrier discharge inert gas plasma at atmospheric pressure [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
In this paper, surface smoothing of optical glasses, glass ceramic and sapphire using a low-power dielectric barrier discharge inert gas plasma at atmospheric pressure is presented.
Gerhard C.   +4 more
doaj   +1 more source

GERMS JOURNEY: co-creation of resources for addressing UN Sustainable Development Goals in education & health in developing countries [PDF]

open access: yes, 2019
Following a Participatory Action Research (PAR) model, this study evaluates whether specifically developed resources (‘A Germ’s Journey’) aid children in India’s understanding of hand-hygiene principles.
Crosby, Sapphire   +2 more
core  

Testing Lorentz Invariance by Comparing Light Propagation in Vacuum and Matter

open access: yes, 2010
We present a Michelson-Morley type experiment for testing the isotropy of the speed of light in vacuum and matter. The experiment compares the resonance frequency of a monolithic optical sapphire resonator with the resonance frequency of an orthogonal ...
Döringshoff, K.   +6 more
core   +1 more source

Determination of Sapphire Off‐Cut and Its Influence on the Morphology and Local Defect Distribution in Epitaxially Laterally Overgrown AlN for Optically Pumped UVC Lasers [PDF]

open access: yes, 2019
Herein, a systematic study of the morphology and local defect distribution in epitaxially laterally overgrown (ELO) AlN on c‐plane sapphire substrates with different off‐cut angles ranging from 0.08° to 0.23° is presented. Precise measurements of the off‐
Enslin, Johannes   +8 more
core   +1 more source

Exploring Microstructure–Physical Property–Corrosion Response Relationship in Intermetallic Compounds of Al‐Cu Bimetallic Interfaces

open access: yesAdvanced Engineering Materials, EarlyView.
Al‐Cu intermetallic compounds (IMCs) have a significant influence on the properties of Al‐Cu bimetallic interfaces formed in compound casting. This article provides a deeper understanding of microstructure, crystallography, thermal properties, hardness, and corrosion response of Al‐Cu IMCs with the goal of facilitating the optimization of the ...
Alireza Nazarahari   +7 more
wiley   +1 more source

Eutectic bonding of sapphire to sapphire [PDF]

open access: yes, 1973
Eutectic mixture of aluminum oxide and zirconium oxide provides new bonding technique for sapphires and rubies. Technique effectively reduces possibility of contamination.
Deluca, J. J.
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Wafer scale BN on sapphire substrates for improved graphene transport

open access: yesScientific Reports, 2018
Wafer scale (2”) BN grown by metal organic chemical vapor deposition (MOCVD) on sapphire was examined as a weakly interacting dielectric substrate for graphene, demonstrating improved transport properties over conventional sapphire and SiO2/Si substrates.
Shivashankar Vangala   +3 more
doaj   +1 more source

Tests of Sapphire Crystals Produced with Different Growth Processes for Ultra-stable Microwave Oscillators

open access: yes, 2015
We present the characterization of 8-12 GHz whispering gallery mode resonators machined in high-quality sapphire crystals elaborated with different growth techniques.
Dubois, Benoit   +3 more
core   +3 more sources

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

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