Materials Literature
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Polymer-dispersed liquid crystal (PDLC), with characteristics of high contrast and low driving voltage, has found many product applications and is an important material for new generations. In this experiment, we used 2-phenoxy ethyl acrylate (2-PEA) and tripropylene glycol diacrylate, two acrylic monomers, to prepare…
In this paper, we present a design technique to realize reconfigurable terahertz (THz) frequency selective surface (FSS) polarizer. Our approach relies on combining vanadium dioxide (VO2) patches with metallic resonators. Vanadium dioxide behaves as an insulator at room temperatures and as a metal at high temperatures…
CdTe nanoflake arrays were fabricated directly on a conductive substrate via gas-phase tellurization of a cadmium nanoflake template. A put-in-heating technique was developed to prevent the fusion and collapse of the cadmium template, as a result, the nanoflake morphology was well preserved during high temperature tel…
Abstract A large π‐conjugated chromophore composed of two dipyrido[3,2‐ a :2′,3′‐ c ]phenazine units directly fused to the central tetrathiafulvalene core has been prepared as a bridging ligand and its strong binding ability to Ru 2+ to form a new dinuclear complex is presented. The electronic absorption and luminesce…
2D lamellar aluminophosphate (LAP) is successfully exfoliated into nanolayers in polyurethane (PU) through the combination of organically modification and solution casting method. Morphological studies by XRD and TEM show that the exfoliated LAP nanolayers are dispersed well in the PU matrix. The introduction of small…
The majority of the kinetic models employed in catalytic after-treatment of exhaust emissions use a global kinetic approach owing to the simplicity because one expression can account for all the steps in a reaction. The major drawback of this approach is the limited predictive capabilities of the models. The intrinsic…
This paper discusses the numerical exponential instability of the transfer matrix method (TMM) in the framework of the symmetry formalism. This numerical weakness is attributed to a series of increasingly extreme exponentials that appear in the TMM when it is applied to geometries involving total internal reflection (…
As a new nano-scale functional material, it is necessary to achieve a uniform distribution in the composites for gaining the CNFs’ excellent reinforcing effect. In this paper, CNFs were purified by the method of high temperature annealing treatment. Six surfactants, methylcellulose (MC), hydroxypropyl methylcellulose…
Highly-qualified graphene was prepared by the ultrasonic exfoliation of commercial expanded graphite (EG) under the promotion of (NH4)2CO3 decomposition. The yield of graphene from the first exfoliation is 7 wt%, and it can be increased to more than 65 wt% by repeated exfoliations. Atomic force microscopy, x-ray photo…
CuO nanograins (NGs) and CuO nanowires (NWs) on the top of nanograins samples were produced by the electrical resistive heating method. The NGs sample shows absence of long range magnetic order and strong field-induced ferromagnetic behavior. In the sample comprised of NWs on the top of NGs, a long-ranged antiferromag…
Luminescent properties of liquid-crystalline tris(β-diketonate) europium(III) complexes with Lewis bases (substituted 2,2′-bipyridine and 1,10-phenantroline) are investigated. Absolute and relative quantum yields and lifetimes are determined. Absorption, excitation, and emission spectra of the complexes are investigat…
The graphene paper fabricated through an electrochemical exfoliation and filtration process provides high quality and massive graphene sheets in an ink form synthesised using artificial graphite as starting material. The product is mainly composed of bilayer and few layer graphene. Their lateral size can be up to >10…
In this paper, strontium carbonate (SrCO 3 ) and barium carbonate (BaCO 3 ) crystals were synthesized in the presence of an organic additive-hexamethylenetetramine (HMT) using two CO 2 sources. Scanning electron microscopy and X-ray powder diffractometry were used to characterize the products. The results showed that…
Potassium tantalite niobate (KTa1−xNbxO3, KTN) single crystals with various compositions and sizes were grown by double crucible Czochralski method in KTaO3–KNbO3 solid solution system. All the crystals we have grown are in good transparence and are >1 cm in size. Growth habit, morphological, structural and homogeneit…
A new sol–gel route has been applied to prepare Al2O3 dense films using Al(NO3)3·9H2O as a raw material and acetylacetone (AcAc) as a chelating agent. The research results show that AcAc and aluminium form a complex compound in the solution, which makes the sol very stable. A small amount of polyvinyl alcohol (PVA) is…
The deformation mechanism and mechanical properties of carbon nanotube (CNT) forests conformally coated with alumina using atomic layer deposition (ALD) are investigated using in situ and ex situ micro-indentation. While micro-indentation of a CNT forest coated with a thin discontinuous layer using 20 ALD cycles resul…
As a surface modified zinc oxide, stearic acid‐coated nano zinc oxide (ZOS) has been prepared by sol‐gel method and was used along with N ‐benzylimine aminothioformamide‐ N ‐cyclohexyl benzthiazyl sulfonamide binary accelerator system, multiwalled carbon nanotube (MWCNT) and sulfur for vulcanizing 20/80 natural rubber…
The stability of M@B(n)H(n) (M = V(-), Cr, Mn(+); n = 5-8) is investigated by density functional theory. For n = 6-8, the isomers possess (quasi-)planar local minima showed by geometry optimization at TPSSh/6-311+G** level. All the optimized structures are thermodynamics stable according to the large HOMO-LUMO gap, bi…
With a range of biological properties, single-walled carbon nanotubes (SWCNTs) are a promising material for nanobiotechnology. Concerns about their potential effect on human health have led to the interest in understanding the interaction between SWCNTs and cells. There are many reports showing the potential cellular…
Adsorption of trimers and hexamers built of identical spheres was studied numerically using the random sequential adsorption (RSA) algorithm. Particles were adsorbed on a two-dimensional, flat and homogeneous surface. Numerical simulations allowed us to determine the maximal random coverage ratio, RSA kinetics as well…