Materials Literature
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High-quality corrugated CdS nanoribbons were synthesized through thermal evaporation of CdS powder (1.44 g). The length of periodicity could be tuned simply by varying the deposition temperature. Also, when the CdS source was reduced to 0.144 g, the product was slick nanobelts. The hexagonal wurtzite phase and single…
We studied the easy axis gliding of a polymer-stabilized nematic liquid crystal. The easy axis of the liquid crystal was slowly reoriented in the presence of an electric field, and the gliding process was approximated to the triple exponential functions. The different dynamics is considered to be related to the morpho…
We report the effects induced by near-infrared apoferritin-PbS (AFt-PbS) nanocomposites on cell cycle progression in non-tumorigenic and cancerous human cells. By using flow cytometry and Annexin V assay, we show that the cell cycle of non-tumorigenic cells is not altered by exposure to AFt-PbS nanoparticles at concen…
Bombyx mori silk fibroin with the main sequence (Ala-Gly-Ser-Gly-Ala-Gly)n is a promising scaffold for bone regeneration not only on account of its excellent mechanical property as a structural matrix, but also for its slow biodegradability with adequate control of hydroxyapatite (HAP) deposition. Seeking to develop a…
Structural and magnetic properties have been studied in perovskite Nd1-xErxMnO3 (0 ≤ x ≤ 0.5). Er3+ doping enhances the Jahn-Teller distortion, strongly affects the Nd3+-Mn3+ interaction, destroys the intermediate state below the antiferromagnetic transition temperature in NdMnO3, and breaks the antiparallel arrangeme…
Abstract A series of positively charged imidazolium‐functionalized ionic polyurethanes (IPUs) were prepared in one‐step polymerization process by polymerization of presynthesized short‐chain imidazolium‐based ionic diol, polyethylene glycols with different molecular weights as long‐chain diols, and toluylene‐2,4‐diiso…
We propose a color-reflective dual-frequency (DF) cholesteric liquid crystal display (CLCD) characterized by a short switching time of merely milliseconds directly from the focal conic (FC) texture to the planar (P) state. Three distinct cholesteric pitches are prepared such that the Bragg reflections take place in re…
This chapter focuses on the co-crystallization process in organic compounds. The operation is performed in batch mode in order to meet regulatory requirements. The industrial manufacturing process is carried out in solution for economical reasons. When a co-crystal form is chosen from among the different screened soli…
Pristine multiwall carbon nanotubes [MWCNTs] have been functionalized with various groups (-COOH, -SO3H, -PO3H2) using different single- and double-step chemical routes. Various chemical treatments were given to MWCNTs using hydrochloric, nitric, phosphoric, and sulphuric acids, followed by a microwave treatment. The…
Natural lithography with 100-nm-diameter SiO(2) spheres followed by inductively coupled plasma etching was used to texture the surface of 4H-SiC for a wide-spectrum large-acceptance-angle anti-reflective layer. The surface showed low normal-incidence reflectance of < 5% over a wide spectrum from 250 nm to 550 nm. Phot…
The process of magnetization reversal in a Ga${}_{1\ensuremath{-}x}$Mn${}_{x}$As film is investigated by using angle-dependent measurements of the planar Hall effect. When a small field (e.g., below 25 Oe) is used, the planar Hall resistance (PHR) displays four stable values arising from the formation of four differen…
The effect of octyl gallate and propyl gallate on the molecular mobility, oxygen permeability, and microstructure of zein/glycerol films was studied. Films were cast from 70% ethanol/water containing 20% (w/w) glycerol and different amounts of the antioxidants propyl gallate or octyl gallate. The oxygen permeability a…
Co-existence of superconductivity and magnetism has been reported in certain regions of the Fe(Se,Te) phase diagram. Here, we address the key question of whether these different properties occur simultaneously within a homogeneous crystal or whether a “two-phase” description is more appropriate. Extensive microstructu…
A new method is presented for developing patterned, thin nanocomposite films by introducing cellulose nanowhiskers during the pulsed plasma polymerization of maleic anhydride. Metastable film structures develop as a combination of dewetting and buckling phenomena. By controlling the maleic anhydride monomer to cellulo…
We present an interpretation of recent experimental measurements of $d\ensuremath{\mu}/dn$ in suspended bilayer graphene samples. We demonstrate that the data may be quantitatively described by assuming a spatially varying interlayer potential asymmetry (which generates a band gap) induced by local electric fields res…
We develop a molecular-based hyperelastic model to simulate the size dependent mechanical properties of polymer nano-structures. We assume that polymer chains are confined to a different “tube” size in a boundary layer than that in the core, which alters the free energy and produces the size effect. Simulations also e…
Isothermal hydrogen desorption of spark discharge generated Mg/NbOx and Mg/Pd metal hydride nanocomposites is consistently described by a kinetic model based on multiple reaction rates, in contrast to the Johnson-Mehl-Avrami-Kolmogorov [M. Avrami, J. Phys. Chem. 9, 177 (1941); W. A. Johnson and R. F. Mehl, Trans. Am.…
Using the technique of DC-magnetron sputtering of zinc target in the temperature range from −30°C to 30°C, we have obtained high-ohmic ZnO films (1.1×10 9 , 2×10 11 , 1.3×10 6 , and 10 8 Ω cm) on the substrates of glass, Si, and composites based on poly(3, 4-etylendioxythiophene) doped with polystyrensulfonic acid (PE…
A series of materials used for oil absorption based on cellulose fiber grafted with (BuAc) have been prepared by radical polymerization under ultrasonic waves processing. Effects of ultrasonic dose for the maximum graft yield were considered. The dependency of optimum conditions for oil absorption rate on parameters s…
Both descriptive and predictive capabilities of five physically based constitutive models (PB, NNL, ZA, VA, and RK) are investigated and compared systematically, in characterizing plastic behavior of the 603 steel at temperatures ranging from 288 to 873 K, and strain rates ranging from 0.001 to 4500 s −1 . Determinati…