Materials Literature
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In this paper, analysis and interpretation of mechanical property measurements of -SiAlON ceramic were reported. Indentation microhardness of -SiAlON ceramic was measured using the Knoop and Vickers indenters. The analysis of the Vickers indentation microhardness data reveals the reverse indentation size effect that i…
One of the most unique structural characteristics of carbon nanotubes (CNTs) differentiating from other carbon materials is their hollow nanochannles, which can be utilized for encapsulating and loading foreign matters. The anodic aluminum oxide (AAO) template technique enables the diameter, length, and cap structure…
The reactive hydride composite of 2LiBH 4 –MgH 2 has been melt infiltrated in a resorcinol–furfural (RFF) carbon aerogel scaffold. Dried aerogel of RFF, further pyrolyzed to obtain a carbon aerogel scaffold, is prepared by CO 2 supercritical drying, where time consumption is significantly lower than the normal procedu…
Star polymer architectures were developed as multimodal imaging systems as fluorescence and magnetic resonance imaging (MRI) agents. Acrylate star polymers in hydrodynamic diameters of 10 ± 2 nm comprising fluorene derivatives as core units were modified with dopamine derivatives in adjustable quantities to chelate la…
BACKGROUND: A new simple preparation method for a hippurate-intercalated zinc-layered hydroxide (ZLH) nanohybrid has been established, which does not need an anion-exchange procedure to intercalate the hippurate anion into ZLH interlayers. METHODS: The hippuric acid nanohybrid (HAN) was prepared by direct reaction of…
A method to reproduce colored images with a guided-mode resonance filter (GMRF) array is presented in this Letter. Because of their excellent characteristics, monochromatic light of the three primary colors with high purity can be achieved by using GMRF structures. Moreover, the primary colors are obtained without cha…
The oxidative dehydrogenation (ODH) of propane to propene over a vanadium-based catalyst suffers from side reactions of further and complete oxidations of propene and other intermediates, which limit the yield of propene. These further oxidation reactions are also referred to as deep oxidation reactions of ODH. In thi…
Abstract Polyphenylsilsesquioxane (PPSQ) of ladder structure synthesized in laboratory was incorporated into polycarbonate (PC) by means of a twin‐screw extruder. Scanning electron microscopy (SEM) observations showed that spherical PPSQ particles of size 0.5−1.5 μm dispersed homogeneously in PC. The incorporation of…
A nonlinearity in the magnetoelectric coefficient, αMENonlin, of Metglas/Pb(Zr,Ti)O3 (PZT) and Metglas/Pb(Mg1/3,Nb2/3)O3-PbTiO3 (PMN-PT) laminate sensors has been observed. This nonlinearity was found to be dependent on the dc magnetic bias (Hdc) and frequency of the ac drive field (Hac). The maximum value of αMENonli…
For conventional metal/ceramic composites, we report an interesting negative permittivity behavior, which was usually observed in artificial metamaterials. The Fe/Al 2 O 3 composites with different Fe volume contents ranging from 10% to 40% were prepared through hot‐pressing sintering. The impedance and dielectric pro…
Application of phase change memory (PCM) has been limited by the high power required to reset the device (changing from crystalline to amorphous state by melting the phase change material). Utilizing the poor thermal and electrical conductivity of TaN we have designed a simple structure that thermally insulates the bo…
A system of hydrogen bonds in weakly hydrated PVA films containing up to ≤8.5 wt % water is investigated via IR spectroscopy. It is shown that water molecules bind to only part of the hydroxyl groups of the polymer that are available for hydration and form the first hydrating layer. In a completely dehydrated film, pr…
We investigated the dynamic competition between crystallization and phase separation in a dynamically asymmetric blend of poly(methyl methacrylate) (PMMA) and poly(ethylene oxide) (PEO). Because of a large difference in glass transition temperatures between these two components, the phase transition dynamics is slowed…
Understanding thermal energy transport in polycrystalline semiconductors is important for the efficiency of electronic devices and thermoelectric materials. In this paper, we study the reduction of the transport of thermal energy in polycrystalline semiconductors generated by the shortening of the phonon mean free pat…
Although there have been many reports about the cytotoxicity of multi-walled carbon nanotubes (MWCNTs), the results are still controversial. To investigate one possible reason, the authors investigated the influence of MWCNT dispersants on cellular uptake and cytotoxicity. Cytotoxicity was examined (measured by alamar…
An experimental study of hydrodynamic cavitation downstream microdiaphragms and microventuris is presented. Deionized water and nanofluids have been characterized within silicon–Pyrex micromachined devices with hydraulic diameters ranging from 51 μm to 104 μm. The input pressure could reach up to 10 bars, and the flow…
Thermoelectric materials generate electricity from thermal energy using the Seebeck effect to generate a voltage and an electronic current from a temperature difference across the semiconductor. High thermoelectric efficiency ZT requires a semiconductor with high electronic conductivity and low thermal conductivity. H…
A brief review of the recent studies of the crystal and electronic structure and its stability under large strain-shear and tensile deformation of selected boron compounds, which have been predicted to be superhard on the basis of their high elastic moduli, is presented. It will be shown that in many cases, the materi…
Abstract Large‐scale lateral alignment of nanorods (NRs) is of interest for manifestation of their anistropic properties including polarized emission and directional electrical transport. This study investigates the utility of mechanical rubbing for macroscopic scale alignment of colloidal semiconductor NRs. CdSe/CdS…
Abstract We investigated the potential of thermoplastic polyurethane elastomer nanocomposites (TPUNs) as alternative elastomeric heat shielding materials (EHSMs) in ablative applications. Three different nanofillers were tested – montmorillonite clay (MMT clay), multi-walled carbon nanotubes (MWNTs), and carbon nanofi…