Materials Literature
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It has been known that classical continuum mechanics laws fail to describe strain localization in granular materials due to the mathematical ill-posedness and mesh dependency. Therefore, a non-local theory with internal length scales is needed to overcome such problems. The micropolar and high-order gradient theories…
To develop high-temperature shape memory alloys, Ti–50(Pt,Ir)mol% compounds are noted because of their martensitic transformation from B2 to B19(2H) or 4H(4O) structures above 1273 K. A thermal expansion measurement and loading-unloading compression test were performed for Ti–50(Pt,Ir) to determine if the shape memory…
Conformational control of the receptor-fluorophore orientation of BF2 chelated azadipyrromethene sensors reveals two photophysically different modes of analyte triggered fluorescence switching both of which exhibit large off-on fluorescence intensity responses to the light input-output of the sensors in the visible re…
We report on the observation of the excitation/emission spectrum of a dendrimer-encapsulated gold nanocluster; the synthesis of Au-PAMAM was based on reduction of HAuCl4 x 3 H2O co-dissolved in methanol together with fourth-generation OH-terminated PAMAM.
Silicone rubber is universally regarded as the best-in-class elastomer for extreme environments. In addition, silicone rubber is one of the most permeable elastomers. This property is a key advantage for silicone rubber in many design situations. However, some applications which require silicone performance in extreme…
Deposition and Evaluation of Protective PVD Coatings on Ferritic Stainless Steel SOFC Interconnects, Gorokhovsky, V. I., Gannon, P. E., Deibert, M. C., Smith, R. J., Kayani, A., Kopczyk, M., VanVorous, D., Yang, Zhenguo, Stevenson, J. W., Visco, S., Jacobson, C., Kurokawa, H., Sofie, S. W.
A new effective approach for estimating the Leslie coefficients of liquid crystals based on MBBA data is presented. Literature values of the temperature‐dependent Leslie viscosity coefficients of MBBA are used to fit with the analytical functions of Leslie coefficients based on the Imura and Okano theory, and a set of…
In this work, the effects of preparation conditions in roughening silver substrates by electrochemical triangular-wave oxidation-reduction cycles (ORC) on surface-enhanced Raman scattering (SERS) were investigated. Based on this prepared substrate, the practical limit of detection (LOD) of rhodamine 6G (R6G) can be re…
Abstract The crystal structures and magnetic properties of heterocyclic thiazyl radicals and related materials have been examined. TTTA (=1,3,5-trithia-2,4,6-triazapentalenyl) exhibited a first-order phase transition between a paramagnetic high-temperature (HT) phase and a diamagnetic low-temperature (LT) phase, with…
The overall objective of this effort is to support DOE with independent system level analyses of various H2 storage approaches, to help to assess and down-select options, and to determine the feasibility of meeting DOE targets. Specific objectives in Fiscal Year 2008 included: (1) Model various developmental hydrogen…
We have developed a mixed conducting samaria-doped ceria (SDC) cathode with highly dispersed Ni catalysts in a solid oxide electrolysis cell (SOEC) for efficient hydrogen production. The Ni-dispersed SDC cathode exhibited the highest performance at 17 vol %-Ni loading due to the effective enhancement of the reaction r…
The equilibrium between Ti and O has been investigated in molten Fe–Ti alloy saturated with various kinds of titanium oxides at 1873 K. The present results have been thermodynamically analyzed applying Wagner's formalism as well as Darken's quadratic formalism with the excess Gibbs free energy change of mixing describ…
Thermoelectric properties of ZrNiSn based half-Heusler compounds, Zr0.7X0.3NiSn (X=Ti, Hf), ZrNi0.7Y0.3Sn (Y=Pd, Pt), and ZrNi1.05Sn were investigated from room temperature to 1000 K. All the substitutions and addition of the excess nickel drastically decreased the thermal conductivity. The experimental values at room…
We hypothesized that immunoliposomes (ILs) constructed using Fab' from the humanized anti-EGFR monoclonal antibody, EMD72000, can provide efficient intracellular drug delivery in EGFR-overexpressing colorectal tumor cells.ILs were constructed modularly with various MAb fragments, including Fab' from EMD72000 (matuzuma…
Coatings comprising various volume fractions of particulate polyaniline dispersed in a polyvinylbutyral binder are applied to iron substrates. A scanning Kelvin probe is used to measure substrate potentials in humid air and follow corrosion-driven coating delamination (cathodic disbondment) when aqueous NaCl contacts…
Hierarchical porous hollow nickel microspheres with nickel nanoparticles as the in situ formed building units have been fabricated via a novel precursor hydrothermal redox method in alkaline solution of KBH4. The microspheres exhibit enhanced coercivity and remanent magnetization as compared with hollow nickel submicr…
Partial-discharge (PD) measurements have long been used to assess the condition of the electrical insulation in motors and generators rated 3.3 kV and above. There are many ways to measure PDs during normal service of the motor or generator. Unfortunately most of the measurement methods mix stator PD with electrical-i…
The intercalation chemistry of a recently synthesized family of layered double hydroxides, [MAl4(OH)12](NO3)2·yH2O (M = Zn, Cu, Ni, Co), has been explored. A range of dicarboxylates, mono- and disulfonates have been intercalated successfully, and the resulting materials fully characterised. The interlayer spacing of t…
Prestorage drying operations of high-burnup fuel may make Zircaloy-4 (Zry-4) fuel cladding more susceptible to failure, especially during fuel handling, transport, and post-storage retrieval. In particular, hydride precipitates may reorient from the circumferential to the radial direction of the cladding during drying…
Flat, quantum dot like arrays of closely spaced, electron rich metal centres are seen as attractive subunits for device capability at the molecular level. Mn(II)9 grids, formed by self-assembly processes using 'tritopic' pyridine-2,6-dihydrazone ligands, provide easy and pre-programmable routes to such systems, and ha…