Results 41 to 50 of about 24,872 (164)

Fabrication of humidity monitoring sensor using porous silicon nitride structures for alkaline conditions

open access: yesSensors and Actuators Reports
Porous silicon nitride structures were fabricated for a humidity sensor. The porous silicon structures were fabricated by the metal-assisted chemical etching process, and the conformal silicon nitride thin film was deposited by the atomic layer ...
Soobin Park   +7 more
doaj   +1 more source

Manufacture and Compositional Analysis of Silicon Nitride Composites with Different Carbon Additions

open access: yesCommunications, 2004
Carbon black and graphite nano/micrograins and sintering additives (Al2O3 and Y2O3) were added to silicon nitride starting powder. These mixtures were mechanochemically activated several hours in a planetary type alumina ball-mill in order to achieve a ...
Csaba Balazsi   +2 more
doaj   +1 more source

High-Efficiency Grating Coupler in 400 nm and 500 nm PECVD Silicon Nitride With Bottom Reflector

open access: yesIEEE Photonics Journal, 2019
We design and experimentally demonstrate highly efficient Silicon Nitride based grating couplers with bottom distributed Bragg reflectors. All the layers were deposited using plasma enhanced chemical vapor deposition processing.
Siddharth Nambiar   +4 more
doaj   +1 more source

On the Growth and Microstructure of Carbon Nanotubes Grown by Thermal Chemical Vapor Deposition

open access: yesNanoscale Research Letters, 2010
Carbon nanotubes (CNTs) were deposited on various substrates namely untreated silicon and quartz, Fe-deposited silicon and quartz, HF-treated silicon, silicon nitride-deposited silicon, copper foil, and stainless steel mesh using thermal chemical vapor ...
Handuja Sangeeta   +2 more
doaj   +1 more source

Preparation of porous silicon nitride ceramics by freeze drying

open access: yesJournal of Materials Research and Technology, 2019
Silicon nitride ceramics have excellent mechanical properties, good thermal and chemical stability, low dielectric constant and dielectric loss. It is an ideal choice for high-speed aircraft electromagnetic wave transmission materials. In this paper, the
Chun-fang Xiao, Bing Han
doaj   +1 more source

Investigation of Low-Cost Surface Processing Techniques for Large-Size Multicrystalline Silicon Solar Cells

open access: yesInternational Journal of Photoenergy, 2010
The subject of the present work is to develop a simple and effective method of enhancing conversion efficiency in large-size solar cells using multicrystalline silicon (mc-Si) wafer.
Yuang-Tung Cheng   +7 more
doaj   +1 more source

Reliability characterization of MEMS switch using MIM test structures

open access: yesJournal of Electrical Systems and Information Technology, 2014
Silicon nitride thin film dielectrics are used in capacitive radio frequency micro-electromechanical systems (MEMS) switches since they provide a low insertion loss, good isolation, and low return loss.
Vaibhav Dubey, Deepak Khushalani
doaj   +1 more source

Experimental Research on Adding Nitrogen in Alloy Steels by Nitride in Vacuum Induction Furnace Melting

open access: yesTeshugang, 2012
The effect of vacuum, temperature and nitride composition on nitrogen solubility in steel is analyzed and the test of adding nitrogen in alloy steel with various chemical composition (/% : 0. 06 ~0. 36C, ≤3. 23Si, ≤2. 20Al, ≤ 9.
岳江波, 甘晓龙, 陈子宏
doaj  

Enhancement of Optoelectronic Properties of Multicrystalline Silicon Using Al-NPs and SiNx Layer

open access: yesCrystals
In this study, we investigated and compared the influence of alumina nanoparticles (Al-NPs) and silicon nitride (SiNx) layers individually deposited on multi-crystalline silicon (mc-Si) on mc-Si’s structural, optical, and optoelectronic characteristics ...
Mohamed Ben Rabha   +5 more
doaj   +1 more source

The visual motion blur elimination method for silicon nitride bearing roller fissures based on U-Net asymmetric multi-scale feature fusion

open access: yesAIP Advances
The visual motion blur imaging for the feature recognition process of silicon nitride bearing roller fissures is a pathological problem. This is solved by proposing squeeze-and-excitation asymmetric fusion of multi-scale features with high-frequency loss
Zhijuan Deng   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy