Materials Literature
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The stress corrosion cracking (SCC) behavior of H62 brass in Mattsson’s solution containing various concentrations of disodium hydrogen phosphate (DHP) was investigated by slow strain rate tests and electrochemical tests. The results confirm that the susceptibility of brass to SCC and film-induced stress decreased wit…
Indium tin oxide (ITO) nanopatterned electrodes are prepared from colloidal solutions as a material saving alternative to the industrial vapor phase deposition and top down processing. For that purpose highly monodisperse In(1-x)Sn(x) (x < 0.1) colloidal nanocrystals (NCs) are synthesized with accurate size and compos…
A vapor transport method is employed to synthesize single crystalline tellurium nanowires with tailorable size using tellurium powder in an inert atmosphere. The average nanowire diameter is tunable between 50 and 3000 nm with an associated length of 1 to 22 μm. Growth temperature and time are used to specifically con…
Abstract The efficacy of Zr in removing Fe from molten Mg‐X binary alloys was studied experimentally and using calculated phase diagrams. Zr is effective in reducing the Fe content from the Mg melt for Mg‐X binary alloys, X = Y, Si, Sn, Ca, Sr, Ce, Gd, Nd, Li, La, Mn, and Zn. Purification occurs by the precipitation f…
An eco-friendly building block and fuel additive—dimethyl carbonate (DMC)—was synthesized through a benign route by transesterification of propylene carbonate (PC) with methanol. The catalytic activity of a series of calcined, rare earth elements (La 3+, Ce 3+, Pr 3+, Sm 3+, and Y 3+; 2–10 mol %) incorporated Mg–Al hy…
Abstract Molecular brushes of poly(2‐oxazoline)s were prepared by living anionic polymerization of 2‐iso‐propenyl‐2‐oxazoline to form the backbone and subsequent living cationic ring‐opening polymerization of 2‐ n ‐ or 2‐ iso ‐propyl‐2‐oxazoline for pendant chain grafting. In situ kinetic studies indicate that the ini…
Control over the molecular orientation in organic thin films is demonstrated with precise in-plane spatial resolution over large areas. By exploiting the differential crystallization rates on substrates with different surface energies, the radial symmetry of spherulitic growth can be disrupted by preferentially select…
Abstract Compatibility of starch/polyvinyl alcohol (PVA) blends, prepared by solution cast method, is dependent on the blend composition. Crystallinity of the blend, as measured by X‐ray diffraction (XRD) and differential scanning calorimeter (DSC), decreases with increase in starch content. Thermogravimetric analysis…
It is shown by tight-binding approximation and group theory that a double Dirac cone, or a pair of two identical Dirac cones, of the electromagnetic dispersion relation can be created in the Brillouin zone center by accidental degeneracy of E(1) and E(2) modes in triangular-lattice metamaterials of C(6v) symmetry. The…
Abstract Biodegradable polymer blends based on biosourced polymers, namely polylactide (PLA) and poly(3‐hydroxybutyrate‐ co ‐4‐hydroxybutyrate) (P(3HB‐ co ‐4HB)), were prepared by melt compounding. The effects of P(3HB‐ co ‐4HB) on the miscibility, phase morphology, thermal behavior, mechanical properties, and biodegr…
The effects of radio frequency field (B(1)) inhomogeneity on measured in vivo human brain glutamate chemical exchange saturation transfer contrast maps are normally confounded with contributions from chemical exchange saturation transfer, direct saturation and magnetization transfer effects. Consequently, the chemical…
Atomic layer deposition (ALD) processes of noble metals are gaining increasing interest for applications in catalysis and microelectronics. Platinum ALD from (methylcyclopentadienyl)trimethylplatinum (MeCpPtMe 3 ) and O 2 gas has been considered as a model system for noble metal ALD. However, many questions about the…
New p-type polycrystalline films of semiconducting Cu 5 Ta 11 O 30 and Cu 3 Ta 7 O 19 were prepared on fluorine-doped tin oxide (FTO) glass starting from their CuCl-flux synthesis as highly faceted micrometer-sized particles. The particles were annealed on FTO at 400–500 °C, followed by a mild oxidation in air at betw…
We have studied the high-temperature multiferroic cupric oxide using polarized neutron diffraction as a function of temperature and applied electric field. We find that the chiral domain population can be varied using an external electric field applied along the $b$ axis. With the aid of representation analysis, we de…
Four SiMo 12 O 40 4– (SiMo 12 )-based compounds, namely, [Ag 6 Cl 2 (mmt) 4 (H 4 SiMo 12 O 40 )(H 2 O) 2 ] ( 1 ), [Ag 4 (bmte) 2 (H 2 O) 2 (SiMo 12 O 40 )] ( 2 ), [Ag 4 (bmtr) 2 (H 2 O) 2 (SiMo 12 O 40 )] ( 3 ), and [Ag 4 (bmtb) 3 (SiMo 12 O 40 )] ( 4 ) (mmt = 1-methyl-5-mercapto-1,2,3,4-tetrazole, bmte = 1,2-bis(1-me…
Chemical cross-linking is the standard approach to tune the mechanical properties of polymer coatings for cell culture applications. Here we show that the elastic modulus of highly swollen polyelectrolyte films composed of poly(L-lysine) (PLL) and hyaluronic acid (HA) can be changed by more than 1 order of magnitude b…
Elaborately programmed fluorescent calcein nanowire arrays can be prepared with the aid of superhydrophobic pillar-structured surfaces with high adhesion. Each nanowire can be precisely positioned by well designed tip-structured micropillars, indicating an advance in the methodologies of controlling small molecular 1D…
The remarkable, vapor-induced transformation of the yellow polymorphs of [(C(6)H(11)NC)(2)Au(I)](AsF(6)) and [(C(6)H(11)NC)(2)Au(I)](PF(6)) into the colorless forms are reported along with related studies of the crystallization of these polymorphs. Although the interconversion of these polymorphs is produced by vapor…
We present a detailed study of the energetics of water clusters (H$_2$O)$_n$ with $n \le 6$, comparing diffusion Monte Carlo (DMC) and approximate density functional theory (DFT) with well converged coupled-cluster benchmarks. We use the many-body decomposition of the total energy to classify the errors of DMC and DFT…
The lower bound usually cited for Poisson's ratio ν is -1, derived from the relationship between ν and the bulk and shear moduli. From consideration of the longitudinal and biaxial moduli, we recently determined that the lower bound on ν for isotropic materials is actually 1/5, a value also consistent with experimenta…