Materials Literature
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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/ni…
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…
A procedure for dispersing single-walled carbon nanotubes (SWNTs) for the preparation of suspensions with high concentrations of individual nanotubes in various solvents was described. The most stable suspensions were obtained from a mixture of ethanol with cholic acid at an acid concentration of 0.018 mol/kg.
Lanthanide orthovanadates of appropriate morphology, polymorph character and size are attractive for various electronic and magnetic applications. Though template free methods exist, there is a preference to facile template based methods for fine tuning of shape and size. The novelty of the methodology reported herein…
To explore photoresponsive conducting materials, we developed new tetrathiafulvalene (TTF)–fluorene D–A dyads with a σ-bonded thiomethylene spacer (1a–d) or a π-conjugated ethylene spacer (2a–b) and reported their synthesis, electrochemical and optical properties. Fluorescence studies suggested that the fluorescence f…
We report a technique to encode grayscale digital images in thin films composed of copolymers containing coumarins. A nonlinear microscopy setup was implemented and two nonlinear optical processes were used to store and read information. A third-order process (two-photon absorption) was used to photoinduce a controlle…
Presented in this work is a new experimental technique to facilitate studies of materials under uniform radial expansion at rates of strain typically seen in ballistic and impact studies (103 to 105 s−1) at temperatures around 100–1000 K. Previous work places a right-cylinder polymer insert in a sample cylinder, into…
Cancer cells can express specific biomarkers, such as cell membrane proteins and signaling factors. Thus, finding biomarkers and delivering diagnostic agents are important in the diagnosis of cancer. In this study, we investigated a biomarker imaging agent for the diagnosis of hepatic cancers. The asialoglycoprotein r…
In this paper, we report a novel, eco-friendly method for the preparation of gold nanoshells (GNS) with unprecedented colloidal stability. Gold shell layers were grown on silica nanospheres by utilizing glucose. Nanoshell morphology was optimized by varying the molar ratio of glucose to gold, and was characterized usi…