Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
We developed a two fluid atomizer to spray mammalian cells suspended in phosphate buffered saline (PBS)-Pluronic F-127 polymer solutions. We used the device to spray suspensions of bovine articular chondrocytes and porcine tracheal epithelial cells, in either PBS or the polymer solutions, and studied their viability a…
In an attempt to mimic the bamboo's architecture, bamboo-like polymer/silicon nanocomposites were synthesized by filling silicon nanopores with two conjugated polymers, namely poly( p -phenylene vinylene) (PPV) and its derivative poly(2-methoxy-5-(2'-ethylhexyloxy)- p -phenylene vinylene) (MEHPPV). The microstructure,…
Microporous polyvinyl chloride (PVC) with pore size of 0.2–2 µm has been obtained by the foaming of PVC powders using a solution of 2,2'-azo-bis-iso-butyronitrile in a co-solvent of butanone and cyclohexanone. The PVC/CaCO3 hybrid powders deposited with CaCO3 nanoparticles have been synthesized using the microporous P…
We applied a simple yet accurate self-consistent method using the density-functional formalism to study the field-emission properties of nanographite ribbons. We found some properties that are unique to nanostructure arrays, including the field-emission current being dominated by the contribution from off-zone-center…
Liquid anhydrous sulfuric acid forms a partly ordered structure in the presence of single-walled carbon nanotubes (SWNTs). X-ray scattering from aligned fibers immersed in acid shows the formation of molecular shells wrapped around SWNTs. Differential scanning calorimetry of SWNT-acid suspensions exhibits concentratio…
Powder neutron diffraction reveals a subtle triclinic distortion in the 300 K structure of the ${\mathrm{Y}}^{3+}∕{\mathrm{Ba}}^{2+}$ cation-ordered and ${\mathrm{Mn}}^{3+}∕{\mathrm{Mn}}^{4+}$ charge-ordered perovskite ${\mathrm{YBaMn}}_{2}{\mathrm{O}}_{6}({\mathrm{Y}}_{0.5}{\mathrm{Ba}}_{0.5}{\mathrm{MnO}}_{3})$. The…
The occurrences of natural coexisting feldspars including hyalophane and also celsian delineate two-, three- and possibly four-phase fields in the system BaAl2Si2O8—CaAl2Si2O8—NaAlSi3O8—KAlSi3O8. Hyalophane occurs with albite and microcline in a very low grade (anchizonal to epizonal) metasedimentary association from…
Tuning the interfacial area is essential for the optimization of nanostructured CeO 2 in a variety of applications. In this work, we investigate the microstructural mechanism of an oxidation-induced transition from a partially oriented, granular and porous nanostructure to a dense epitaxial one in CeO 2 films deposite…
A weak polyelectrolyte layer-by-layer self-assembled multilayer has several morphologies depending on solution pH, including the morphology of poly(allylamine hydrochloride) (PAH) pH 7.5/poly(acrylic acid) (PAA) pH 3.5, which is called texture structure. We confirmed the initial growth of a weak polyelectrolyte layer-…
Quasi-one-dimensional Cr-based $({d}^{3},S=\frac{3}{2})$ pyroxenes $(\mathrm{Li},\mathrm{Na})\mathrm{Cr}{(\mathrm{Si},\mathrm{Ge})}_{2}{\mathrm{O}}_{6}$ reach long-range magnetic order at low temperatures. At substitution of small size cations ${\mathrm{Li}}^{1+}$ and ${\mathrm{Si}}^{4+}$ for large size cations ${\mat…
Solid oxide fuel cell (SOFC) technology has been shown to be viable, but its profitability has not yet been seen. To achieve a high net efficiency at a low net cost, a detailed understanding of the transport processes both inside and outside of the SOFC stack is required. Of particular significance is an accurate dete…
The preparation of liquid-crystalline colloids with diameters in the range of about 100 to 300 nm is reported. Different preformed smectic polysiloxanes have been transferred into colloids by a miniemulsion process with ionic surfactants. Microscopy of unstained colloids clearly show the smectic layer structure within…
Si-undersaturated Ca-Fe-rich buchite produced by fossil burning of a coal seam occurs in porcelanite deposit at Želenky in the North-Bohemian Brown Coal Basin, Czech Republic. Buchite is highly inhomogeneous, dense (ρ = 2.9–3.1 g/cm 3 ), strongly magnetic rock (10 −2 −10 −1 [SI]) composed of melilite, clinopyroxene (e…
We report on optical enhancement of the 655 nm photoluminescence (PL) band intensity in the core-shell CdSe/ZnS nano-particles (quantum dots) under a laser illumination. Kinetic curves and 80 K-to-room temperature dependences of the PL intensity reveal two parallel processes: a reversible enhancement when the PL inten…
We explore phase separation on spherical surfaces by solving the Cahn-Hilliard equation modified for diblock copolymers using a finite volume method. The spherical surface is discretized into almost uniform triangles by employing successive dyadic refinements of the spherical icosahedron, a methodology that avoids pot…
In the study described herein, we observed the buckling behavior of carbon nanotube (CNT) bundles under axial compression using molecular dynamics (MD) simulations. We found that the critical buckling loads of CNT bundles are much higher than that of an individual single-walled carbon nanotube (SWCNT). The addition of…
Blended polyelectrolyte multilayer films that include a hydrogen-bonding constituent have been used as templates for the preparation of nanoporous polymer thin films. By crosslinking the electrostatic components following layer-by-layer (LbL) deposition and removing the hydrogen-bonding component by pH elevation (see…
Abstract Cyanate ester (PT‐15, Lonza Corp) composites containing the inorganic–organic hybrid polyhedral oligomeric silsesquioxane (POSS) octaaminophenyl(T 8 )POSS [ 1 ; (C 6 H 4 NH 2 ) 8 (SiO 1.5 ) 8 ] were synthesized. These PT‐15/POSS‐ 1 composites (99/1, 97/3, and 95/5 w/w) were characterized by X‐ray diffraction…
This study evaluates reclaimed building materials (RBM), including waste concrete, brick, and tile, used as aggregate for hot mix asphalt (HMA). The analysis method of gray relational analysis (GRA) is presented to determine the best performance of the varying proportions of RBM with igneous crush stone (ICS) on HMA m…
Negative refractions of acoustic waves in a two-dimensional (2D) sonic crystal were studied both experimentally and theoretically. By calculating the acoustic band structure and equifrequency surfaces, we theoretically analyzed the acoustic single-beam negative refraction in the first band operating in the ultrasonic…