Materials Literature
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The problem of image segmentation is considered. Popular thresholding methods are reviewed and tested on images presenting yarn of different hairiness. Results of image segmentation provided by the regarded thresholding approaches are presented, compared and analyzed. Especially their capabilities of extracting single…
Slow and fast growth textured polycrystalline rods of Fe82Ga18 have been annealed at 300 and 600 °C under 50 MPa of tensile stress for 20 min. The rods showed a built-in positive internal stress of ∼20 MPa (300 °C annealing) to ∼30 MPa (600 °C annealing), corresponding to an induced uniaxial anisotropy energy from −4…
An organic–inorganic hybrid compound (C5H9N3)ZnCl4 · H2O was synthesized by slow evaporation and characterized by single-crystal X-ray diffraction, differential scanning calorimetry, thermogravimetry, temperature-dependent X-ray powder diffraction, infrared spectroscopy, and some preliminary theoretical calculations o…
Magnetic poly(methyl methacrylate) nanocomposites were prepared using oleic acid coated cobalt ferrite and magnetite nanoparticles. Both nanofillers had a similar effect in shifting the glass transition temperature from that of the neat polymer. The cobalt ferrite nanocomposite had magnetic hysteresis at 2 and 300 K a…
A series of arylacetylene resins with siloxane units were synthesized by the condensation reactions of m-diethynylbenzene magnesium reagents with various <TEX>$\alpha,\omega$</TEX>-bis(chloro)dimethylsiloxanes. These resins are liquids and are miscible with common organic solvents at room temperature. The structures o…
Hertzian ring cracking in two SiCs was studied as a function of elastic property mismatch between indenter and target. Ring crack initiation forces (RCIF) were measured using ZrO 2 , steel, Si 3 N 4 , Al 2 O 3 , and WC balls. The SiCs were similar; however, ∼20% of the grains in one were larger than the largest grains…
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Hyper-Rayleigh scattering (HRS) from liquid nitrobenzene was measured for several combinations of linear polarized incident and scattered light, for a range of scattering angles near 90 degrees . The observations show that the HRS intensity is dominated by the polar transverse collective mode contribution, and support…
In this paper, the elastic and melting properties of single-crystal SiC nanotubes were investigated with the help of molecular dynamics simulation based on the Tersoff bond-order potential. It was found that the Young’s moduli and melting temperatures were tightly dependent on the wall thickness of the SiC nanotube, a…
Experimental evidence has been observed for energy transfer from CdS nanocrystals, synthesized by the fusion method, to Nd(3+) ions embedded in vitreous substrates. These dot samples doped with neodymium have been investigated by combined optical absorption (OA), photoluminescence (PL), and time-resolved photoluminesc…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTThermal AnalysisSergey Vyazovkin*View Author Information Department of Chemistry, University of Alabama at Birmingham, 901S 14th Street, Birmingham, Alabama 35294* To whom correspondence should be addressed. E-mail: [email protected]Cite this: Anal. Chem. 2010, 82, 12, 4936–4…
We present here the influence of the phase transformation on the magnetic and magnetocaloric properties of a typical first order system (MnAs) having mixed-phase state near the transition temperature. We use chemical doping to introduce various field and temperature dependent thermodynamic functions into the system. F…
The tetragonal magnetostriction constant, (3/2)λ100, of Fe–Si single crystals was measured and was found to be structure dependent. Similar to that of Fe–Ge single crystals, (3/2)λ100 is positive in the single phase A2 regime, becomes negative in the single phase D03 regime, and changes from positive to negative betwe…
The combination of transmission electron microscopy with X-ray diffraction data is usually limited to relatively large particles. Here, the approach is continued one step further by utilizing negative staining, a technique that is of wider applicability than cryo-electron microscopy, to produce models of medium-size p…
In recent times, technologies based on the imitation of nature have attracted considerable attention. Lotus leaves are known for their self-cleaning effect. The micrometer-scale papillae structure and the epicuticular wax on the lotus leaf contribute to this effect. In a manner similar to the self-cleaning property of…
Mg-Al layered double hydroxides (LDHs) containing chloride (LDH-Cl) or carbonate (LDH-CO(3)) in the interlayer were obtained at room temperature and after calcitation at 450 degrees C (LDH-Cl-450 and LDH-CO(3)-450) and were characterized by X-ray diffraction and Fourier transform infrared analyses. Sorption isotherms…
Single crystals of a new reduced vanadate phase, Cs(5)FeV(5)O(13)Cl(6), have been grown from the reaction of metal oxides V(2)O(5) and Fe(2)O(3) in the presence of a metal reducing agent in a eutectic CsCl/NaCl flux. This compound adopts a tetragonal structure (P4/nmm, a = 10.943(3) A, c = 10.535(4) A, Z = 2) that con…
Thymidine-3'-monophosphate (3'-TMP) is a competitive inhibitor analogue of the 3'-CMP and 3'-UMP natural product inhibitors of bovine pancreatic ribonuclease A (RNase A). Isothermal titration calorimetry experiments show that 3'-TMP binds the enzyme with a dissociation constant (K(d)) of 15 microM making it one of the…
We demonstrate that hierarchical nanostructured metal sub-microtubes with evenly distributed nanoscale pores on sidewalls can be synthesized though electrodeposition of metals on electrospun fiber templates and subsequent wet etching. Due to the hierarchical nanostructure and uniform "hot spots" on sidewalls, these po…
There are many different techniques for the synthesis of carbon nanotubes (CNTs), and plasma technologies experience a significant competitor in thermal chemical vapor deposition (CVD) processes. A particular process is, therefore, selected according to the specific requirements of an application, which clearly differ…