Materials Literature
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Non-woven polyethylene terephthalate (PET) fibers produced via melt blowing and compounded into a 6 mm diameter 3D tubular scaffold were developed with artery matching mechanical properties. This work compares the effects of ethylene oxide (EtO) and low temperature plasma (LTP) sterilization on PET surface chemistry a…
Electrooxidation to form neutral films of a homoleptic nickel dithiolene [Ni(b-3ted)2] (1) from an air-stable TBA salt is described [b-3ted = bis(3-thienyl)-1,2-ethylenedithiolene; TBA = tetrabutylammonium]. Films grown by potentiostatic electrodeposition directly onto interdigitated electrode arrays show improved con…
We investigate the effects of interlayer interactions and lattice distortions on the noncollinear ground state and spin dynamics of a geometrically frustrated triangular-lattice antiferromagnet with implications for the multiferroic phase of doped ${\text{CuFeO}}_{2}$, where both lattice distortions and anisotropy int…
Near-infrared (near-ir) quantum dots (QDs) are well known for their excellent optical characteristics. They hold great potential for applications in non-invasive long term observation and tracing of cells in vivo. Here, near-ir QDs with an emission wavelength of 800 nm (QD800) were used to label squamous cell carcinom…
Cerium-modified bismuth layer structure CaBi2Nb2O9(CBNO) ceramics were prepared by using the conventional mixed oxide method. X-ray diffraction analysis revealed that the cerium modified CBNO ceramics have a pure two-layer bismuth layer structure. The piezoelectric activity of CBNO ceramics was found significantly imp…
The chemical and mechanical properties of spider major ampullate (MA) silks vary in response to different prey, mostly via differential expression of two genes - MaSp1 and MaSp2 - although the spinning process exerts additional influence over the mechanical properties of silk. The prey cues that initiate differential…
ZnS and Co2+: ZnS nanocrystals were prepared in aqueous solution by one-pot method using thioglycolic acid as stabilizer. The nanocrystals were characterized by X-ray diffraction (XRD), FT-IR spectra and UV-Vis absorption spectra. The results show that both ZnS and Co2+: ZnS nanocrystals possess zinc-blende strcture.…
The slake durability index (ASTM D4644-08) measures the response of rock fragments to submerged tumbling action. This test was modified to eliminate oven drying, extend test-increment duration, and increase the number of test increments to better reflect conditions in rock-bed stream channels. The results are expresse…
Two pure fluoride and three fluoride phosphate glasses with known properties and global structure have been doped with Er 3+ (4f 11 ) in a concentration range between 10 19 and 10 21 Er 3+ cm −3 . A typical fluorozirconate (ZBLAN) and a typical fluoroaluminate glass (FP00) were compared. The effect of P 2 O 5 addition…
Different ions modified (K0.5Na0.5)NbO3(KNN)-based lead free piezoelectric ceramics were prepared by conventional mixed oxide ceramic processing. The roles of different doping ions, at the A or B sites of perovskite structure of KNN, on the properties of KNN-based ceramics were analyzed. The XRD analysis and dielectri…
Abstract In this work, the surface of vulcanized rubbers was treated by a low‐pressure microwave plasma process to enhance the adhesion with a silicone adhesive. The plasma reactor was fed with nitrogen, oxygen or synthetic air. Scanning electron microscopy and atomic force microscopy observations associated with X‐ra…
Dielectric constants in Pb(Zn1/3Nb2/3)O3-PbTiO3 were measured under the zero-field heating after a preceding field cooling. It was confirmed that a sharp phase transition between ferroelectric phases in Pb(Zn1/3Nb2/3)O3 appears at 114°C, and the phase boundary connects to the morphotropic phase boundary in the Pb(Zn1/…
The first-principles calculation had been adopted to investigate the intrinsic vacancies in bulk PbTiO3. The atomic relaxation and the formation energy of isolated neutral vacancy were studied respectively. And the defect reaction energies of Pb partial Schottky (VPb 2−+VO 2+), Ti partial Schottky (VTi 4−+2VO 2+), and…
Layered double hydroxides (LDHs) constitute an important group of materials with many applications ranging from catalysis and absorption to carriers for drug delivery, DNA intercalation and carbon dioxide sequestration. The structures of LDHs are based upon double brucite-like hydroxide layers [M(2+)(n)M(3+)(m)(OH)(2(…
Abstract Novel BN hollow microspheres have been successfully fabricated by a facile chemical vapour reaction approach using ammonia–borane as a precursor. The morphology and structure of the as‐synthesized products are characterized by scanning electron microscopy (SEM), high‐resolution transmission electron microscop…
Magnetic properties of the TTF-CA molecular crystal below the neutral to ionic transition temperature are studied using the embedded cluster approach in combination with density functional theory. The calculated values of the Heisenberg exchange integral between the neighboring TTF and CA molecules stacked along the c…
Two different methods to obtain silver nanoparticles supported on kaolin crystals have been performed: the first one followed a thermal reduction and the second one a chemical reduction. In both cases, the silver nanoparticles with two different average particles size (ca.12 and 30 nm) were perfectly isolated and atta…
We study effects of a repulsive Coulomb interaction on the spectral gap in monolayer and bilayer graphene in the vicinity of the charge neutrality point by employing the functional renormalization-group technique. In both cases Coulomb interaction supports the gap once it is open. For monolayer graphene we correctly r…
The effects of calcination temperatures (900–1400°C) and sintering temperatures (1400–1650°C) on phase and morphology evolution of perovskite CaZrO3 ceramics were studied. The results obtained from DTA-TGA analysis were used to determine the processed conditions of various calcination temperatures. The highest purity…
Abstract Poly(ethylene azelate) (PEAz) was synthesized and its melting behavior was studied with DSC and Step Scan DSC. The equilibrium melting point of PEAz was found 62 °C and the heat of fusion of 100% crystalline polymer was estimated at 160 J · g −1 . Polarized light microscopy showed mixed birefringence. From is…