Materials Literature
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Dilithium tetragermanate is orthorhombic, space group P2(1)ca, at 298 K, and is thus in a polar and probably a ferroelectric state. The structure contains two independent Li, four Ge and nine O atoms, all on general positions with site symmetry 1. Three tetrahedrally coordinated Ge positions form crumpled crankshaft-l…
In this work we present a detailed study on the magnetostrictive contribution to Poisson ratio for samples under applied mechanical stress. Magnetic contributions to strain and Poisson ratio for cubic materials were derived by accounting elastic and magneto-elastic anisotropy contributions. We apply our theoretical re…
Adsorption of Zn(x)O(y) (x + y = 1-6) clusters on ZnO (000 ± 1) polar surfaces is studied systematically via density function theory (DFT) calculations. Different adsorption behaviors are predicted for these two surfaces. On the (0001)-Zn surface, O atoms adsorb on hollow sites at the initial stage. Then Zn atoms come…
This paper presents a nonlocal Euler-Bernoulli beam model. It is assumed that the equilibrium of a beam segment is attained because of the classical local stress resultants, along with long-range volume forces and moments exchanged by the beam segment with all the nonadjacent beam segments. Elastic long-range volume f…
The microstructure and electrical–optical properties of Al-doped ZnO (AZO) films have been studied as a function of H2 flux in the magnetron sputtering process at 150 °C and postannealing temperature in vacuum. As H2 flux increases in the sputtering gas, the AZO films deposited have a (002) preferred orientation rathe…
Computational structure enumeration, analysis using an automated simulation workflow and filtering of large chemical structure libraries to identify lead systems, has become a central paradigm in drug discovery research. Transferring this paradigm to challenges in materials science is now possible due to advances in t…
In this work, we report a green synthetic method using water-dispersible magnetite nanoparticles containing oleic acid and poly(2-ethyl-2-oxazoline)-poly(ɛ-caprolactone) diblock copolymer as the magnetite nanoparticle dispersants. The Fe 3 O 4 nanoparticles were prepared by co-precipitation and had a bilayer surface w…
The phase transformations of ceramic PbZr${}_{1\ensuremath{-}x}$Ti${}_{x}$O${}_{3}$ are studied at the composition $x=0.05$ close to the morphotropic phase boundary between antiferroelectric orthorhombic $Pbam$ and ferroelectric rhombohedral phases by elastic, dielectric, and x-ray diffraction measurements. Temperatur…
We have studied magnetic and structural properties of the composite microwires consisted of the metallic core and the outer glass shell. Nominal chemical composition of the core was Ni49.5Mn25.4Ga25.1, its diameter was 13.2 μm, and the total diameter of the glass-covered microwires was 26.4 μm. We have found out that…
Ultrathin 2D nanostructures have shown many unique properties and are attractive for various potential applications. Here, we demonstrated a strategy to synthesize ultrathin VOx nanosheets. The as-obtained ultrathin VOx nanosheets showed a large Brunauer-Emmett-Teller (BET) surface area of 136.3 m2 g(-1), which is muc…
In this contribution, the photoluminescence, time-resolved luminescence and luminescence kinetics of α'-Sr2SiO4:Eu(2+) are studied. The luminescence of Sr2SiO4:Eu(2+) consists of two broad bands, peaked at 490 nm (blue-green) and 570 nm (yellow-orange), which originate from two luminescence centers, related to Eu(2+)…
First-principles density-functional theory calculations show that switching of magnetization by 90° can be achieved in BiFeO3 ultrathin film by applying external electric field. Spin-up carriers appear to the surface with positive field while spin-down ones to the negative field surface, arising from the redistributio…
The biaxial stress–strain response of Cu and Ni layers within Cu/Ni nanolaminates was determined from in-plane X-ray diffraction during heating/cooling. Thinner (11 nm) Cu and Ni layers with coherent, cube-on-cube interfaces reached ∼1.8 GPa (Cu) and ∼2.9 GPa (Ni) without yielding. Thicker (21 nm) layers with semi-coh…
The phase behaviors of binary consecutive even normal alkane (n-alkane) mixtures (n-C(n)H(2n+2)/n-C(n+2)H(2n+6), with mass ratios of 90/10 and 10/90) with different average carbon numbers n¯ both in the bulk state (abbreviated as C(n)/C(n+2)) and in nearly monodisperse microcapsules (abbreviated as m-C(n)/C(n+2)), hav…
Aminosilicate sol-gel supported titania-keggin type polyoxometalate-gold nanocomposite materials (APS/(P25-PTA-Au)NCM) (APS, (3-aminopropyl)triethoxysilane; P25, Degussa-TiO2; PTA, Na3PW12O40·xH2O) were prepared by a simple chemical reduction method and characterized by diffuse reflectance spectroscopy, photoluminesce…
Room temperature multiferroic properties and magnetocapacitance effect of modified ferroelectric Bi4Ti3O12 ceramic, Chen, Xiaoqin, Wei, Cong, Xiao, Jun, Xue, Yun, Zeng, Xiangbin, Yang, Fujun, Li, Pai, He, Yunbin
The generation of nanoscale polymer films using complex, hierarchically structured (bio)macromolecular architectures has important implications in the field of materials science. This study details the surface-confined covalent cross-linking of micellar macrocross-linkers derived from the amphiphilic diblock copolymer…
Thermal transport in carbon nanotube (CNT) mats, consisting of randomly networked multi-walled carbon nanotubes (MWNTs), is not as efficient as in an individual CNT because of the constrained tube-to-tube phonon transport. Through experiments and modeling, we discover that phonon transport in CNT mats is significantly…
Low-cost and facile shrink lithography is utilized to form suspended graphene nanoribbon (GNR) for an ion-sensitive field-effect transistor (ISFET) with pH/cancer marker sensing applications. By combining shrink thermoplastic film with hot embossing process, GNR patterns 50 nm wide are achieved in a low-cost and simpl…
We report a template-induced preferential electrodeposition method for tailoring hexagonally packed metal hollow-nanocones and taper-nanotubes. After sputtering a layer of Au film, anodized aluminum foils with controllable periods and depths of taper-nanopore templates can be directly used as cathodes. Nanonipples on…