Materials Literature
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Nano-size barium strontium titanate Ba 0.7 Sr 0.3 TiO 3 (BST) maize-bead–like structures were conformally coated on bamboo-like carbon nanotubes (BCNTs) grown on copper substrates. Initially BCNTs were fabricated by hot-filament chemical vapor deposition (HF-CVD) techniques on Cu substrates. Later, BST was deposited o…
Diamond-like carbon (DLC) films are prepared by a bipolar-type plasma-based ion implantation (PBII) technique using toluene and nitrogen gases (N 2 ), and the optical and electrical properties are examined as a function of N 2 flow rate. The N concentration in the films and structural changes are also examined by Ruth…
Mesoporous silica nanoparticles are drawing increasing attention in biomedical applications. In this work, hierarchically nanoporous SBA-1 single-crystal-like nanoparticles, with a size of 50–300 nm, were synthesized using a cationic surfactant and anionic polymer poly(acrylic acid) (PAA) mesomorphous complexes as a t…
In this work, solar micro-thermoelectric generators are designed with a lens concentrating solar radiation onto the membrane of a thermoelectric generator (TEG). By focusing solar radiation, the input heat flux increases; leading to an increase in the temperature gradient across the device. Consequently, a significant…
Field emission lamp is a kind of green and low energy loss light source. Carbon nanotube cathode of field emission lamp was prepared by electrophoretic deposition. Two types of solute salt were added in electrophoretic solution separately, which were used to prepare two types of carbon nanotubes films on identical alu…
The surface texture and morphology of thin films play an essential role in determining their properties. In this study, local features in the film surface of crystallized Gd2Zr2O7 (GZO) films with a thickness gradient are investigated by means of scanning electron microscopy and electron backscatter diffraction. A str…
We studied the Baeyer-Villiger (BV) type oxidation of phenylrhenium trioxide (PTO) by H(2)O(2) in the aqueous phase using Quantum Mechanics (density functional theory with the M06 functional) focusing on how the solution pH and the para-substituent affect the Gibbs free energy surfaces. For both PTO and MTO (methylrhe…
Silicon carbide (SiC) is a promising material for fabricating wire compacting dies due to its advantages of light weight and even high wear resistance over the tungsten carbide, which currently is the most popular material used to produce compacting dies. In present study, a layer of CVD diamond film is deposited on t…
A new alkali metallo-organic single crystal of Lithium Sodium Acid Phthlate (LiNaP) complex has been synthesized from aqueous solution in the equimolar ratio 3:1:2. Transparent and bulk single crystals of dimension 9 × 4 ×2 mm3 have been grown from the conventional slow-cooling technique. The crystal structure of the…
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) was applied to the study of the interaction of molten LiF–NaF salts with candidate structural materials for a nuclear reactor-transmutor cooling circuit. At a working temperature of 680 °C structural materials of heat exchangers are attacked and t…
Iron nanomaterials are of considerable interest for application to nanotechnology-related fields including environmental catalysis, biomedical imaging, drug delivery and hyperthermia, because of their superparamagnetic characteristics and high catalytic abilities. However, information about potential risks of iron nan…
Hyperbolic metamaterials can manipulate electromagnetic waves by converting evanescent waves into propagating waves and thus support light propagation without diffraction limit. In this paper, deep subwavelength focusing (or power concentration) is demonstrated both numerically and experimentally using hyperbolic meta…
Collagen-pectin scaffolds comprised of collagen derived from the skins of brown banded bamboo sharks (Chiloscyllium punctatum) and citrus pectin were fabricated for tissue engineering. Crosslinking of the scaffolds was performed by pregelation of pectin using calcium sulfate and chemical crosslinking of collagen using…
Les polymères constituent une famille remarquable de matériaux de par l’extrême variété des produits qu’il est possible d’en concevoir et la flexibilité des différents procédés de mise en œuvre. Le recours à ces matériaux a permis de réaliser des gains substantiels sur les coûts, les délais d’utilisation et les interv…
Unusual aggregation of biopolymer-wrapped single-walled carbon nanotubes (SWCNTs) induced by cationic porphyrin meso-tetrakis(4-N-methyl-pyridyl)porphine (TMPyP4) in aqueous suspension has been studied by absorption spectroscopy and molecular dynamics simulation. After the addition of a small dose of TMPyP4 (10−6 M) i…
Magnetic semiconductors are promising materials for electronic applications, because it is possible to control the quantum state of the electron spin (up or down), providing almost total spin polarization. We present boron-doped nanocrystalline diamond samples with magnetic properties prepared by chemical vapor deposi…
Chiral dopants were synthesized from bio-based epimeric isohexides (glucose-derived isosorbide and mannose-derived isomannide) and their phase transition behaviors and abilities for developing cholesteric liquid crystal (CLC) films were examined with a consideration of the core structure. In spite of lower reactivity…
Our measurements of surface enhanced Raman scattering (SERS) on Ga 2 O 3 dielectric nanowires (NWs) core/silver composites indicate that the SERS enhancement is highly dependent on the polarization direction of the incident laser light. The polarization dependence of the SERS signal with respect to the direction of a…
Nano-sized gold catalysts have attracted much interest during recent years. Here, we report a new material to improve the catalytic activity and recyclability of gold catalysts. Multi-component Fe–Al–O oxides prepared by impregnation (γ-Fe2O3/γ-Al2O3 and Al2O3/α-Fe2O3) and encapsulation (Fe2O3@Al2O3) methods were empl…
The exploitation of Si nanostructures for electronic and optoelectronic devices depends on their electronic doping. We investigate a methodology for As doping of Si nanostructures taking advantages of ion beam implantation and nanosecond laser irradiation melting dynamics. We illustrate the behaviour of As when it is…