Results 11 to 20 of about 52,531 (266)

Study on the Rapid Preparation of Zinc Oxide Nanotubes by Galvanostatic Etching

open access: yesEurasian Chemico-Technological Journal, 2021
At present, most of the methods for preparing ZnO nanotubes are chemical etching of ZnO nanorods, which is inefficient and takes a long time. In this paper, ZnO nanotubes were successfully prepared by galvanostatic etching.
Jingsong Sun   +2 more
doaj   +1 more source

A two-step physical-chemical etching technique to improve laser damage resistance of fused silica

open access: yesJournal of Materials Research and Technology, 2022
A two-step physical-chemical etching method, namely large incident angle ion beam etching followed by HF etching, is proposed to remove the damage precursors in fused silica surface to achieve good surface quality and significantly improve the laser ...
Bo Li   +8 more
doaj   +1 more source

SENSITIVITY VARIATION RESEARCH OF TILTED FIBER BRAGG GRATING DURING CHEMICAL ETCHING [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper presents experimental results of the chemical etching duration impact on the tilted fiber Bragg grating transmission spectrum.
Diana O. Gagarinova   +5 more
doaj   +1 more source

Effect of photo chemical etching and electro chemical etching on the topography of porous silicon wafers surfaces

open access: yesTikrit Journal of Pure Science, 2019
In This research we study the effect of photo chemical etching and electrochemical etching on topography of porous silicon surfaces, the results showed that photo chemical etching produced roughness silicon layer which can have thickness be less of ...
Amjad Hussein Jassem
doaj   +1 more source

Fabrication of wafer-scale nanoporous AlGaN-based deep ultraviolet distributed Bragg reflectors via one-step selective wet etching

open access: yesScientific Reports, 2022
In this paper, we reported on wafer-scale nanoporous (NP) AlGaN-based deep ultraviolet (DUV) distributed Bragg reflectors (DBRs) with 95% reflectivity at 280 nm, using epitaxial periodically stacked n-Al0.62Ga0.38N/u-Al0.62Ga0.38N structures grown on AlN/
Yongming Zhao   +8 more
doaj   +1 more source

Modeling the characteristic etch morphologies along specific crystallographic orientations by anisotropic chemical etching

open access: yesAIP Advances, 2018
To improve the advanced manufacturing technology for functional materials, a sophisticated control of chemical etching process is highly demanded, especially in the fields of environment and energy related applications. In this study, a phase-field-based
Kun-Dar Li, Jin-Ru Miao
doaj   +1 more source

Combined metal-assisted chemical etching and anisotropic wet etching for anti-reflection inverted pyramidal cavities on dendrite-like textured substrates

open access: yesResults in Physics, 2019
A simple and low-cost method using the combination of metal-assisted chemical etching (MacEtch) and anisotropic wet etching was performed to fabricate anti-reflection inverted pyramidal cavities on dendrite-like textured silicon substrates.
Yu-Keng Lin   +2 more
doaj   +1 more source

Decreasing Frequency Splits of Hemispherical Resonators by Chemical Etching

open access: yesSensors, 2018
The hemispherical resonator gyroscope (HRG) has attracted the interest of the world inertial navigation community because of its exceptional performance, ultra-high reliability and its potential to be miniaturized.
Yuting Wang   +5 more
doaj   +1 more source

Friction Performance of Aluminum-Silicon Alloy Cylinder Liner after Chemical Etching and Laser Finishing

open access: yesMetals, 2019
In order to enhance the surface friction performance of the aluminum-silicon (Al-Si) alloy cylinder liner, chemical etching and laser finishing techniques are applied to improve the friction performance.
Fengming Du   +6 more
doaj   +1 more source

Wet chemical thinning of molybdenum disulfide down to its monolayer

open access: yesAPL Materials, 2014
We report on the preparation of mono- and bi-layer molybdenum disulfide (MoS2) from a bulk crystal by facile wet chemical etching. We show that concentrated nitric acid (HNO3) effectively etches thin MoS2 crystals from their edges via formation of MoO3 ...
Kiran Kumar Amara   +4 more
doaj   +1 more source

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