Bone implants with open porosity enable fast osseointegration, but also present an increased risk of biofilm-associated infections. We design a novel implant material consisting of a mesoporous SiO2 diffusion barrier (pore diameter: 6.4 nm) with controlled drug release functionality integrated in a macroporous Ti load-bearing structure (fully interconnected open porosity: 30%; pore window size:...

Supported vanadium oxides (VOx) are alternative candidates for non-oxidative propane dehydrogenation (PDH) owing to their competitive performance. This paper describes the roles of V−O sites on PDH over monomeric VOx species supported ZrO2, Al2O3 and SiO2. With control pre-reduction, stable structures obtained PDH, including V−O-support (V−O−S), V−OH V=O sites. By tuning V densities individual ...

The bias stability of zinc-tin-oxide ZTO thin-film transistors TFTs with either Al2O3 gate dielectrics deposited via atomic layer deposition ALD or SiO2 gate dielectrics deposited via plasma-enhanced chemical vapor deposition PECVD was compared. Both device types showed incremental mobility 11 cm2 /V s, subthreshold slopes 0.4 V /dec, and ION / IOFF ratios of 107. During repeated ID-VGS sweepin...

This work presented a novel core-shell MnO2@m-SiO2 for catalyzing the removal of dyes from wastewater. MnO2 nanorods were sequentially coated with polydopamine (PDA) and polyethyleneimine (PEI) forming MnO2@PDA-PEI. By taking advantage of the positively charged amine groups, MnO2@PDA-PEI was further silicificated, forming MnO2@PDA-PEI-SiO2. After calcination, the composite MnO2@m-SiO2 was final...

Berman’s (1983) activity-composition model for CaO-MgO-Al2O3-SiO2 liquids is used to calculate the change in bulk chemical and isotopic composition during simultaneous cooling, evaporation, and crystallization of droplets having the compositions of reasonable condensate precursors of Types A and B refractory inclusions in CV3 chondrites. The degree of evaporation of MgO and SiO2, calculated to ...

Lithium-Sulfur (Li-S) batteries are considered as one of the promising candidates for next-generation Li batteries in near future. Although, these batteries are suffering from certain drawbacks such as rapid capacity fading during the charge and discharge process due to the dissolution of polysulfides. In this paper, Sulfur/metal oxide (TiO2 and SiO2) yolk–shell structures have been successfull...

Novel hierarchical Cd4SiS6/SiO2 based heterostructure nanowire arrays were fabricated on silicon substrates by a one-step thermal evaporation of CdS powder. The as-grown products were characterized using scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. Studies reveal that a typical hierarchical Cd4SiS6/SiO2 heterostructure nanowire is composed of a single c...

Silicon dioxide (SiO2) nanoparticles (NPs) have been widely used in the biomedical field, such as in drug delivery and gene therapy. However, little is known about the biological effects and potential hazards of SiO2. Herein, the colloidal SiO2 NPs with two different sizes (20 nm and 100 nm) and different charges (L-arginine modified: SiO2 (EN20[R]), SiO2 (EN100[R]); and negative: SiO2 (EN20[-]...

A moving pair with two-body contact is the ideal situation assumed in previous analyses. However, all pairs are a three-body state at start of operation or immediately after operation, such as bearings, ball-screws, gears and engines. This work studies influence wear particles (SUJ2), environmental (SiO2 Al2O3) nano-additives (CuO) on tribological characteristics under different particle concen...

Novel hierarchical Cd4SiS6/SiO2 based heterostructure nanowire arrays were fabricated on silicon substrates by a one-step thermal evaporation of CdS powder. The as-grown products were characterized using scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. Studies reveal that a typical hierarchical Cd4SiS6/SiO2 heterostructure nanowire is composed of a single c...