Materials Literature
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By mimicking the native extracellular matrix, electrospun nanofibrous scaffolds (ENSs) can provide both chemical and physical cues to modulate cell adherence and differentiation and to promote tissue regeneration while retaining bioresorbable and biocompatible properties. In this study, ENSs were developed to deliver…
Thermochromic VO2 thin films have successfully been grown on SiO2-coated float glass by reactive pulsed-DC magnetron sputtering. Different Nb doping amounts were introduced in the VO2 solid solution during the film growing which resulted in films with distinct semiconducting-metal phase transition temperatures. Pure V…
A method of controlled diamond doping, consisting in introducing a solid-state silicon source into a CVD reactor chamber is proposed and implemented. Such an approach is tested during diamond film and isolated nanocrystallite growth on silicon, molybdenum, sapphire, copper, and quartz substrates. The approach to nanod…
The rotary draw bending(RDB) of large diameter thin-walled (LDTW) tube needs the strict cooperation of multiple processing parameters to avoid possible multiple defects. Due to the specific properties, the bending behaviors of LDTW commercial pure titanium (CP-Ti) tube are much more complex to achieve precise deformat…
We demonstrate an element-specific observation of magnetic domains in thermally demagnetized Nd-Fe-B and (Nd, Dy)-Fe-B sintered magnets using scanning transmission X-ray microscopy (STXM). Clear chemical and magnetic contrast images with the 30-nm spatial resolution were taken by STXM. Both maze-like magnetic domains…
In this study, we implanted N+ and N2+ ions into sputter deposited amorphous boron carbide (a-BC) and diamond like carbon (DLC) thin films in an effort to understand the chemical bonding involved and investigate possible phase separation routes in boron carbon nitride (BCN) films. In addition, we investigated the effe…
Biodegradable foams made from cassava starch, polyvinyl alcohol (PVA), sugarcane bagasse fibers and chitosan were obtained by extrusion. The composites were prepared with formulations determined by a constrained ternary mixtures experimental design, using as variables: (X1) starch / PVA (100 - 70%), (X2) chitosan (0 -…
The spin-wave stiffness constantDand the Curie temperatureTCfor series ofL21phase in Co2CrGa, Co2MnGa, Co2Mn(Al1-xSix) , Co2Fe(Al1-xSix), and Co2Fe(Ga1-xSix) Heusler alloys were evaluated from the thermomagnetization measurements. For the Co2CrGa, Co2MnGa, and Co2Mn(Al1-xSix) alloys, there was a linear relation betwee…
Well-aligned Ni and Co-NiO-Ni core-shell nanotube arrays with an average outer diameter of about 200 nm have been synthesized in a porous anodic aluminum oxide (AAO) template by the direct electro-deposition method. The result shows that the nanotubes were polycrystalline phase. Angular dependent coercivity Hc(θ) indi…
IJAR - Indian Journal of Applied Research (IJAR) IJAR is a double reviewed monthly print journal that accepts research works from scholars, academicians, professors, doctorates, lecturers, and corporate in their respective expertise of studies.
We have reported in our previous work that doping low concentrations (up to 10% by weight) of gold nanoparticles (GNP) in a polar nematic 4’-hexyl-4-biphenylcarbonitrile (HBPCN) increases the dielectric anisotropy, while the switching voltage and times, and the nematic–isotropic liquid (IL) transition point of the mix…
We investigate the electronic structures and optical dielectric functions of the room temperature phases of SrTiO3 and BaTiO3 by using Tran and Blaha’s modified Becke and Johnson exchange potential. Calculated energy gaps are substantially better than previous first-principles results with respect to experimental valu…
Cerium oxide nanoparticles and nanoporous thin films exhibiting room temperature magnetism have been synthesized by two different methods. The magnetization curves for both particles and films are almost anhysteretic; they fit the empirical expressionM≈Mstanh(H/H0) , whereMsandH0are the saturation magnetization and ex…
We investigate the photoluminescence (PL) behavior of the porous silicon nanowire (PSiNW) arrays synthesized via metal-assisted electroless etching method on the n-Si (100) substrate. Two PL bands with different origins dependent on the post-chemical treatments were detected. The red emission band, the peak position o…
High frequency current transformers (HFCT) are now widely used for partial discharges detection and measurement, specially for partial discharge location and source identification. However, many difficulties arise due to HFCT in the determination of the apparent charge in picocoulombs (pC) because of large variations…
A comparative study of pure CoFe2O4 nanoparticles and La-doped CoFe2O4 nanoparticles, prepared by microemulsion route has been performed. The samples were characterized using x-ray diffraction and transmission electron microscopy in order to obtain average particle size. The doping of small amount of La3+ ions (up to…
BACKGROUND: Nanoliposomes are designed as carriers capable of packaging drugs through passive targeting tumor sites by enhanced permeability and retention (EPR) effects. In the present study the biodistribution, pharmacokinetics, micro single-photon emission computed tomography (micro-SPECT/CT) image, dosimetry, and t…
Four important models for explaining the properties that are observed in polymer based nanocomposites are the multi-core model, the intensity model, the interphase volume model and the double layer model. This paper outlines a new model, based on those four, which aims to explain certain properties that are considered…
An electrochemical sensor was developed by using poly(3,4-ethylenedioxy thiophene) electrode in presence of different types of surfactants. Voltammetric behavior of isoniazid was studied at this electrode in the presence and absence of SDS and CTAB and interesting electrocatalytic effects were found. The presence of s…
Recent research results demonstrate that demagnetizing factors for various geometries can be precisely determined by employing 3-D electromagnetic field simulation. Using a technique developed by the authors, the demagnetizing factor resulting from the simulations match very well with experimental results for several…