Materials Literature
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Active oxygen species (AOS), e.g., excited singlet oxygen atom [O(1D)], excited singlet oxygen molecules (1O2), ground-state oxygen atom [O(3P)] and hydroxyl radical (OH), generated under two wavelengths (185 and 254 nm) of ultraviolet (UV) light were exposed to polyethylene (PE), polypropylene (PP) and polystyrene (P…
Dissociative adsorption of CH 3 NO 2 onto a Si(100)-2 × 1 surface is studied using ambient-pressure X-ray photoelectron spectroscopy (AP-XPS) and density functional theory (DFT) calculations.
Highly open polyhedral networks were fabricated using an economical and environmentally friendly template route. Recycled cellulose foams were impregnated with a sucrose resin and then pyrolyzed in order to produce reticulated vitreous carbon foams with morphological features that closely resemble trabecular bone. Als…
Nanocrystalline composites of Cu90−xCo10Nix (x = 0, 10, 20 wt-%) alloys reinforced with 7.5 wt-% of intermetallic SmCo5 particles were prepared by several processing steps. The production of these alloys started with the synthesis of Cu90−xCo10Nix powder alloys by mechanical alloying of pure Cu, Co and Ni in a planeta…
Constructing periodic nanoscale holes on graphene to form graphene nanomeshes (GNMs) is an effective way for opening band gaps. The GNMs terminated by di-hydrogenation could open a sizable band gap due to the stronger on-site potential between holes.
In the tokamak high confinement mode (H-mode), the transient heat fluxes caused by edge localized modes (ELMs) will eventually irradiate the plasma-facing components and may erode, even melt them. To study the performance of the plasma-wall interaction during ELMs, interactions among heat flux from plasma, surface tem…
Glycine intercalated Mg/Al-layered double hydroxides (LDH-G)/PVA nanocomposites were prepared via exfoliation-adsorption route based on exfoliation of LDH-G in formamide. The effect of ultrasonic treatment on the fabrication of LDH-G/PVA nanocomposites was investigated. The results of XRD suggest that chains of PVA wi…
Cerium oxide (CeO2) nanoparticles are regarded as one of the most promising materials for biomedical applications. Due to their antioxidant activity CeO2 nanoparticles are capable of protecting cells from oxidative stress induced by various physical or chemical factors. In this paper we have investigated the protectiv…
This work is expected to introduce a new class of polymer nanocomposite that might find thermal applications. The objective is to develop new class of nanocomposites by incorporating nanoparticles (TiO2 – ZnO) reinforcing phases into a polymeric resin. Thermal properties included thermal conductivity, effiusivity, dif…
The superparamagnetic graphene nanosheets–Fe3O4 nanoparticles (GNs–Fe3O4) hybrid has been successfully prepared via an easy and scalable chemical precipitation method. The inductive heat property of GNs–Fe3O4 hybrid in an alternating current (AC) magnetic field was investigated. The potential of GNs–Fe3O4 hybrid was e…
La-Nd co-doped barium hexaferrites, Ba0.7(LamNdn)0.3Fe12O19 (D-BaM), were successfully prepared by sol-gel method. PANI / D-BaM composites were synthesized by in-situ polymerization in solution. The structure, morphology and properties of samples have been characterized by X-ray diffraction (XRD), scanning electron mi…
In this paper, a simple, efficient and environmental friendly method was proposed to fabricate TiO2/CdS nanotube arrays. The composite nanotubes with a core-shell coaxial structure were fabricated via a simple method of liquid deposition and double diffusion using anodic aluminum oxide (AAO) templates. The photocataly…
An understanding of the behaviors of photo-generated charge carriers (CCs) has a crucial meaning for establishing a reliable model to describe the operating concept of photovoltaic devices. One of the most-widely used techniques to characterize transport behavior of CCs is a transient photocurrent measurement using a…
The focus of this paper is the numerical modeling of the mechanical tube expansion process, called roller expansion, used in tube to tubesheet joints in heat exchangers. The paper compares a novel finite element based model with previously used models. The numerical models are compared with an experiment where optical…
The fabrication and thermal physical properties contain thermal conductivity (TC) and coefficient of thermal expansion (CTE) using 40%、50%、60% vol% β-SiC particle reinforced Al composite for electronic packaging respectively have been analyzed. The composites were produced by ball milling and pressing method. The comp…
A detailed theoretical study on the influence of lattice vacancy on structural and optical properties of the magnesium silicide Mg2Si has been performed based on the first-principles pseudopotential method. The results show that Mg2Si has changed from indirect band gap semiconductor to direct band gap semiconductor be…
Flower-like CuO/ZnO/SiNWs nanostructures were successfully synthesized on SiNWs substrates using a simple hydrothermal method. The characteristics of the CuO/ZnO/SiNWs nanostructures were investigated through scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV–vis spectrophotometer. SEM images revealed…
First principles evolutionary crystal structure search found a new crystal phase of ammonium nitrate (AN). The calculated Raman spectra of this new phase is consistent with the recently reported experimental Raman spectrum that contains two peaks previously associated with a pressure-induced phase transition. The phas…
This paper describes the structural and optical properties of Cu-Se-CuSe 2 thin films. The surface morphology of thin films was investigated by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Formation of thin films is concluded to proceed unevenly, in the form of islands which later grew into ag…
The investigation on ballistic stability of high-speed projectile in granular materials is important to study the EPW (earth-penetrating weapon). Laboratory-scaled sand entry experiments for the trajectory in the sand have been performed at a range of velocities from 30 m/s to 150 m/s. In addition, pressure sensor was…