Materials Literature
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The nature of charge disproportionation in orthorhombic lanthanum orthoferrites La1-xCaxFeO3-δ (x = 0.4 and 0.5) has been investigated by kilohertz mechanical spectroscopy. Contrast to rhombohedral La1-xSrxFeO3-δ (x = 0.5), no elastic softening was observed in La1-xCaxFeO3-δ above charge disproportionation. This diffe…
Until now, the expressions of the anisotropic energy barriers Δξ and ΔA, using the uniaxial magnetic anisotropy D, the intrachain coupling strength J, and the high-spin ground state S for single-chain magnets (SCMs) in the intermediate region between the Ising and the Heisenberg limits, were unknown. To explore this r…
Asymmetric microcellular composites were prepared by injection molding to study the effects of temperature gradient inside the mold (0 to 60℃) as well as blowing agent (0 to 1%) and natural fibers (0 to 30%) contents. High-density polyethylene, flax fiber, and azodicarbonamide were used as the matrix, reinforcement, a…
The variation in optical texture, electro-optic, and dielectric properties of iron oxide nanoparticles (NPs) embedded ferroelectric liquid crystal (FLC) with respect to change in temperature and electrical bias conditions are demonstrated in the current investigations. Improvement in spontaneous polarization and respo…
Bismuth ferrite nanoparticles have been extensively investigated over the last few years due to their potential candidacy for application in future memory devices. However, all the work reported so far on bismuth ferrite nanoparticles is on agglomerated nanoparticles. Agglomerated particles can magnetically interact w…
Abstract A novel mononuclear iron(II) complex of a 1,2,3-triazole-containing ligand, [FeIILPh](NTf2)2 [LPh: tris(2-{[(1-phenyl-1,2,3-triazol-4-yl)methylidene]amino}ethyl)amine and NTf2: bis(trifluoromethanesulfonyl)imide], was synthesized. The complex shows a gradual one-step spin crossover at around room temperature…
The nanometer range structure produced by thin films of diblock copolymers makes them a great of interest as templates for the microelectronics industry. We investigated the effect of annealing solvents and/or mixture of the solvents in case of symmetric Poly (styrene-<i>block</i>-4vinylpyridine) (PS-b-P4VP) diblock c…
Propylene is one type of plastic that is widely used in our everyday life. This study focuses on the identification and justification of the optimum process parameters for polypropylene production in a novel pilot plant based fluidized bed reactor. This first-of-its-kind statistical modeling with experimental validati…
Abstract In this paper, we present a novel process based on gas atomization and powder metallurgy techniques to produce reliable and stable (La 1‐z Ce z )(Fe 1‐x‐y Mn y Si x ) 13 H n materials, with 0.08 ≤ x ≤ 0.15, 0 ≤ y ≤ 0.05, 0 ≤ z ≤ 0.3 and 1.5 ≤ n ≤ 3. With this process, shaped pieces ready‐to‐use into refrigera…
Herein we elucidate the mechanism of photoreduction of the Pt(IV) complex cis,cis,trans- [Pt(NH 3 ) 2 (Cl) 2 (O 2 CCH 2 CH 2 CO 2 H) 2 ] ( 1 ) into Pt(II) species (among which is cisplatin) by quantum dots (QDs), a process which holds potential for photodynamic therapy. Density functional theory (DFT) and time-depende…
Plasma treatment is often used to alter cell interaction with polymer surfaces used in biomedical application. The influence of surface hydrophilicity/hydrophobicity on human mammary epithelial cell (HMEC) proliferation and adhesion of protein albumin to plasma treated polystyrene (PS) was studied. The PS surface was…
Cytotoxicity of nanomaterials on living systems is known to be affected by their size, shape, surface chemistry, and other physicochemical properties. Exposure to a well-characterized subpopulation of specific nanomaterials is therefore desired to reveal more detailed mechanisms. This study develops scalable density g…
The effects of chemical functionalization of halloysite nanotubes (HNTs) on dispersion, interfacial interaction, and mechanical properties of epoxy nanocomposites were investigated. HNT-filled epoxy nanocomposites were fabricated and their morphology and mechanical properties were systematically studied; the results w…
The structural, electronic and dynamical properties of the cubic, tetragonal and rhombohedral phases of a lead-free ferroelectrics, (Na0.5Bi0.5)TiO3 (NBT), have been studied with a density functional formalism. The direct band gap is determined to be 2∼3 eV for three phases, suggesting them to be good optical material…
Multiwalled carbon nanotubes (MWCNTs) were modified to covalently attach the carboxylic moiety with their surfaces. Variant concentrations of functionalized multiwalled carbon nanotubes (F-MWCNTs) were introduced into polydimethylsiloxane (PDMS) adopting solution mixing technique. Fourier transform infrared spectrosco…
Poly(lactic acid) (PLA) and polycarbonate (PC) alloy (the wt. ratio of PLA and PC was 70/30) was modified by blending with glass fiber (GF), and then aluminum hypophosphite (AP) was applied to improve the flame retardancy of GF-reinforced PLA-PC alloys. The mechanical properties of the alloys were investigated by tens…
Amorphous carbon (a-C) films were fabricated by chemical vapor deposition on SiO2 substrate. The a-C films have nano-crystalline sp2 structure with the grain size of ∼5 nm and an optical band gap of ∼1.8 eV. The a-C films show negative magnetoresistance (MR) from 300 to 2 K and an anomalous shape change of MR-magnetic…
In two dimensions chaotic level statistics with the Wigner spacing distribution P(S) is expected for massless fermions in the Dirac region. The obtained P(S) for weakly disordered finite graphene samples with zigzag edges turns out, however, to be neither chaotic (Wigner) nor localized (Poisson). It is similar to the…
Implementation of Directed Self-Assembly (DSA) as a viable lithographic technology for high volume manufacturing will require significant efforts to co-optimize the DSA process options and constraints with existing work flows. These work flows include established etch stacks, integration schemes, and design layout pri…
Further enhancements to Monte Carlo and Self-Consistent Field Theory Directed Self-Assembly (DSA) simulation capabilities implemented in GLOBALFOUNDRIES are presented and discussed, along with the results of their applications. We present the simulation studies of DSA in graphoepitaxy confinement wells, where the DSA…