Results 1 to 10 of about 274,489 (274)

SiO 2  [La Gardette].

EspacesTemps.net, 2006
Le quartz est un minéral du groupe des oxydes. La Gardette est une ancienne mine située dans le massif de l’Oisans (Isère, France) et mondialement connue : première mine d’or exploitée en France métropolitaine, c’est surtout à ses quartz exceptionnels ...
Samuel Périgois
doaj   +1 more source

Room temperature wafer bonding through conversion of polysilazane into $$\hbox {SiO}_{2}$$ SiO 2

Scientific Reports
Room temperature wafer bonding is a desirable approach for the packaging and assembly of diverse electronic devices. The formation of $$\hbox {SiO}_{2}$$ SiO 2 layer at the bonding interface is crucial for a reliable wafer bonding as represented by ...
Kai Takeuchi, Tadatomo Suga, Eiji Higurashi   +2 more
doaj   +2 more sources

Interfacial Reactions between Si and SiO₂ with Ceramic Additives

Ceramics, 2022
In this study, 10 wt.% ceramics—Al2O3, La2O3, Y2O3, MgO, and TiO2—were employed as additives for amorphous SiO2 after pressing and annealing at 1300 °C. The amorphous SiO2 changed to cristobalite SiO2.
Yu-Hsiang Chen, Kun-Lin Lin, Chien-Cheng Lin   +2 more
doaj   +1 more source

Electrical and thermal characterisation of liquid metal thin-film Ga $$_2$$ 2 O $$_3$$ 3 –SiO $$_2$$ 2 heterostructures

Scientific Reports, 2023
Heterostructures of Ga $$_2$$ 2 O $$_3$$ 3 with other materials such as Si, SiC or diamond, are a possible way of addressing the low thermal conductivity and lack of p-type doping of Ga $$_2$$ 2 O $$_3$$ 3 for device applications, as well as of improving
Alexander Petkov, Abhishek Mishra, Mattia Cattelan, Daniel Field, James Pomeroy, Martin Kuball   +5 more
doaj   +1 more source

Proton Conducting Organic-Inorganic Composite Membranes for All-Vanadium Redox Flow Battery

Membranes, 2023
The quest for a cost-effective, chemically-inert, robust and proton conducting membrane for flow batteries is at its paramount. Perfluorinated membranes suffer severe electrolyte diffusion, whereas conductivity and dimensional stability in engineered ...
Sooraj Sreenath, Nayanthara P. Sreelatha, Chetan M. Pawar, Vidhiben Dave, Bhavana Bhatt, Nitin G. Borle, Rajaram Krishna Nagarale   +6 more
doaj   +1 more source

Contact Electrification of Biological and Bio-Inspired Adhesive Materials on SiO₂ Surfaces: Perspectives from DFT Calculations

Biomimetics, 2022
In this study, we investigate the contact electrification properties of glycine, cysteine, and dimethyl siloxane on silicon dioxide (SiO2) surfaces using density functional theory calculations.
Jing Tao, Linfeng Wang, Kaixuan Kong, Minhao Hu, Zhendong Dai   +4 more
doaj   +1 more source

Evaluation of Chitosan Derivatives Modified Mesoporous Silica Nanoparticles as Delivery Carrier

Molecules, 2021
Chitosan is a non-toxic biological material, but chitosan is insoluble in water, which hinders the development and utilization of chitosan. Chitosan derivatives N-2-Hydroxypropyl trimethyl ammonium chloride (N-2-HACC) and carboxymethyl chitosan (CMCS ...
Qi Li, Wenqian Wang, Gaowei Hu, Xianlan Cui, Dejun Sun, Zheng Jin, Kai Zhao   +6 more
doaj   +1 more source

On effects of freezing and thawing cycles of concrete containing nano- $$\mathbf {SiO_2}$$ SiO 2 : experimental study of material properties and crack simulation

Scientific Reports, 2023
Construction during cold weather can lead to freezing accidents in concrete, causing significant hidden threats to the project’s performance and safety by affecting the mechanical properties and durability reduction.
O. Arasteh-Khoshbin, S. M. Seyedpour, M. Brodbeck, L. Lambers, T. Ricken   +4 more
doaj   +1 more source

Effect of Superhydrophobic Nano-SiO₂ on the Hydraulic Conductivity of Expansive Soil and Analysis of Its Mechanism

Applied Sciences, 2023
The present work determined the influence of superhydrophobic nano-SiO2 on the hydraulic conductivity and pore size distribution of expansive soil, and analysed the mechanism of modification between superhydrophobic nano-SiO2 and expansive soil from a ...
Xiaoqian Luo, Lingwei Kong, Wei Bai
doaj   +1 more source

Robust and Highly Stretchable Chitosan Nanofiber/Alumina-Coated Silica/Carboxylated Poly (Vinyl Alcohol)/Borax Composite Hydrogels Constructed by Multiple Crosslinking

Gels, 2021
We investigated the mechanical and structural properties of composite hydrogels composed of chitosan nanofiber (ChsNF), positively charged alumina-coated silica (ac-SiO2) nanoparticles, carboxylated poly (vinyl alcohol) (cPVA), and borax.
Hiroyuki Takeno, Nagisa Suto
doaj   +1 more source