Results 21 to 30 of about 848,999 (311)

Smooth GaN membranes by polarization-assisted electrochemical etching

open access: yesApplied Physics Letters, 2021
III-nitride membranes offer promising perspectives and improved device designs in photonics, electronics, and optomechanics. However, the removal of the growth substrate often leads to a rough membrane surface, which increases scattering losses in ...
J. Ciers   +5 more
semanticscholar   +1 more source

Optical Properties of Porous Silicon Solar Cells for Use in Transport

open access: yesCommunications, 2019
Porous silicon (pSi) samples were prepared by electrochemical etching of p-type silicon (p-type Si) substrate. Three pSi samples with different parameters of electrochemical etching (electrical potential, etching time, etching current) were prepared and ...
Martin Kralik   +2 more
doaj   +1 more source

Enhancement of Porous Silicon Formation by Using Ultrasonic Vibrations [PDF]

open access: yesEngineering and Technology Journal, 2012
Anodic electrochemical etching enhanced by ultrasonically is developed to fabricate luminescent porous silicon (PS) material. The samples prepared by the new etching method exhibit superior characteristics to those prepared by conventional direct current
Ali H. Al-Hamdani
doaj   +1 more source

A Study on the O2 Plasma Etching Method of Spray-Formed SWCNT Films and Their Utilization as Electrodes for Electrochemical Sensors

open access: yesSensors, 2023
In this study, we analyzed the morphological changes and molecular structure changes on the surface of single-walled carbon nanotube (SWCNT) films during oxygen plasma (O2) etching of SWCNT surfaces formed by the spray method and analyzed their potential
Jinkyeong Kim   +2 more
doaj   +1 more source

Selective electrochemical etching of cantilever-type SOI-MEMS devices

open access: yesNanotechnology and Precision Engineering, 2022
It is possible to achieve selective electrochemical etching between different materials, such as p- and n-type silicon. However, achieving selective electrochemical etching on two different regions of the same p-type silicon material is a problem that ...
Xiuchun Hao, Peiling He, Xin Li
doaj   +1 more source

Diamond Membrane Production: The Critical Role of Radicals in the Non-Contact Electrochemical Etching of sp2 Carbon

open access: yesCarbon, 2021
Sub-micrometre single crystal diamond membranes are of huge importance for next generation optical, quantum and electronic device applications. Electrochemical etching has proven a critical step in the production of such membranes.
J. Tully   +7 more
semanticscholar   +1 more source

Macroporous Silicon Formation on Low-resistivity p-type c-Si Substrate by Metal-catalyzed Electrochemical Etching

open access: yesInternational Journal of Electrochemical Science, 2013
Macroporous silicon with large aperture size was fabricated on p-type c-Si substrate with the resistivity of about 0.1-3 ohm.cm by metal-catalyzed electrochemical etching (MCECE).
Zhaochen Li   +5 more
doaj   +1 more source

Development and Comparative Analysis of Electrochemically Etched Tungsten Tips for Quartz Tuning Fork Sensor

open access: yesMicromachines, 2021
Quartz Tuning Fork (QTF) based sensors are used for Scanning Probe Microscopes (SPM), in particular for near-field scanning optical microscopy. Highly sharp Tungsten (W) tips with larger cone angles and less tip diameter are critical for SPM instead of ...
Ashfaq Ali   +7 more
doaj   +1 more source

Silicon Derived from Glass Bottles as Anode Materials for Lithium Ion Full Cell Batteries. [PDF]

open access: yes, 2017
Every year many tons of waste glass end up in landfills without proper recycling, which aggravates the burden of waste disposal in landfill. The conversion from un-recycled glass to favorable materials is of great significance for sustainable strategies.
Ahmed, Kazi   +8 more
core   +1 more source

Nanoporous silicon-based surface patterns fabricated by UV laser interference techniques for biological applications [PDF]

open access: yes, 2016
The fabrication of selectively functionalized micropatterns based on nanostructured porous silicon (nanoPS) by phase mask ultraviolet laser interference is presented here.
Martín Palma, Raúl José   +3 more
core   +2 more sources

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