Materials Literature
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Polyaniline nanoparticles were synthesized by simple electrochemical polymerization of aniline in systems (a) aniline-sodium dodecyl sulfate (NaDS)-dodecylbenzene sulfonic acid (DBSA)-H(2)O and (b) aniline-NaDS-DBSA-cetyltrimethyl ammonium bromide (CTAB)-H(2)O. Different morphologies including compact and fractal/dend…
An investigation of the segmental dynamics and glass transition behavior of a miscible polymer blend composed of poly(methyl methacrylate) (PMMA) and poly(styrene-ran-acrylonitrile) (SAN) and its melt intercalated nanocomposite by dynamic mechanical analysis is presented. The principle goal was to address the effect o…
Nanotubes released: π–π stacking interactions between single-walled carbon nanotubes (SWCNTs) and a monolayer of aromatic rings anchored on a gold surface result in reversible surface assembly of the SWCNTs. Protonation of a pyridine-based self-assembled monolayer reduces the pyridine–SWCNT interaction and thus releas…
This study aimed to synthesize and characterize biodegradable microcapsules based on poly(lactic acid) (PLA) and ethylcellulose (EC) for a controlled delivery of calcium hydroxide. Phase separation technique was adopted to synthesize calcium hydroxide-loaded PLA/EC microcapsules. Four PLA/EC blends (4/1, 1/1, 1/4, pur…
We report on vibrating reed measurements combined with density functional theory-based calculations to assess the elastic and damping properties of Fe–Pd ferromagnetic shape memory alloy splats. While the austenite–martensite phase transformation is generally accompanied by lattice softening, a severe modulus defect a…
Cisplatin (CDDP) is one of the most active cytotoxic agents and has been widely used in the treatment of peritoneal carcinomatosis by the intraperitoneal (i.p.) route. However, CDDP, a low-molecular-weight compound, is rapidly absorbed by the capillaries in the i.p. serosa and transferred to the bloodstream, inducing…
Abstract The crystallization behaviors of ultra high‐molecular weight polyethylene (UHMWPE) in liquid paraffin under isothermal and nonisothermal conditions were studied by differential scanning calorimetry during the solid–liquid thermally induced phase separation (TIPS) process. For isothermal crystallization, the d…
The refractive index sensitivity of localized surface plasmon resonance sensors can be improved by placing the plasmonic metal particles on pillars instead of on a planar substrate. In this paper, a simple and versatile colloidal lithography method for the fabrication of plasmonic Au islands on top of polymer nanopill…
A comprehensive study, which is presented in two parts, is performed to assess the radio-frequency (RF) performance potential of array-based carbon-nanotube field-effect transistors (CNFETs). In Part I, which is presented in this paper, the time-dependent Boltzmann transport equation is solved self-consistently with t…
Five novel sesquiterpene glycosides, namely, cosmosporasides A-E (1-5), were isolated from the ethyl acetate extract of the fermented broth of Cosmospora joca. The structures of 1-5 were elucidated on the basis of spectroscopic data analyses, monosaccharide composition analyses, and monosaccharide chirality analyses.…
Dissipative particle dynamics (DPD), a mesoscopic simulation approach, is used to investigate the effect of volume fraction of polyethylene (PE) and poly(l-lactide) (PLLA) on the structural property of the immiscible PE/PLLA/carbon nanotube in a system. In this work, the interaction parameter in DPD simulation, relate…
Silica is a well-known impurity in solid oxide fuel cell raw materials, namely NiO and yttria-stabilized zirconia (YSZ). At elevated temperatures silica will migrate to the grain boundaries, form insulating siliceous phases, and lead to a decrease in the ionic conductivity of the electrolyte. Furthermore, silica impur…
Laser irradiation of Ge quantum dots (QDs) grown on Si(100) substrates by solid-source molecular beam epitaxy has been performed using a Nd:YAG laser (532 nm wavelength, 5 ns pulse duration) in a vacuum. The evolution of the Ge QD morphology, strain and composition with the number of laser pulses incident on the same…
We present the results of density-functional theory and Boltzmann transport calculations suggesting that hole-doped CuBiS${}_{2}$---a material commonly available as a mineral and comprised of relatively inexpensive elements---may show good thermoelectric performance at ambient temperature.
Fibras de sisal com quatro tratamentos, a saber: fibra lavada com água, lavada com cicloexano/etanol, tratamento alcalino (NaOH) e tratamento com peróxido alcalino (branqueamento), foram incorporadas na blenda amido termoplástico/policaprolactona 80/20 (TPS/PCL). As propriedades morfológicas, mecânicas e térmicas dos…
Abstract Introduction of sc‐PLA crystals as small nuclei or large sc‐PLA spherulites has great influence on patterning the inter‐phase boundaries and reducing the cracks in crystallized PLLA in mixtures with PDLA. Unmelted sc‐PLA crystals as nuclei induce cracks in later‐crystallized PLLA, whereas co‐crystallization o…
For the first time, the design and fabrication of dual-trench epitaxial p/n junction diodes in a commercially standard 0.13-μm complementary metal-oxide-semiconductor process are introduced in this letter. The 16 × 16 diode arrays with 0.196-μm2(5F2) cell size have been successfully fabricated, showing the excellent e…
Six new metal complex or coordination polymer incorporated Anderson–Evans cluster based solids, (H 2 4- pyc ) 2 [{Na(4- pyc ) 2 }{CrMo 6 (OH) 8 O 16 }]·4H 2 O, 9, (H 2 4- pyc ) 2 [{Ni(4- pyc ) 2 (H 2 O) 4 }{CrMo 6 (OH) 7 O 17 }]·10H 2 O, 12, (H 2 3- pyc ) 2 [{Na(3- pyc ) 2 }{CrMo 6 (OH) 8 O 16 }]·2H 2 O, 13, and [{M 2…
Abstract During precipitation and calcination at 200°C nanocrystalline Co3O4 was obtained with average size crystallites of 13 nm and a well developed specific surface area of 44 m2 g−1. A small addition of a structural promoter, e.g. Al2O3, increases the specific surface area of the cobalt oxide (54 m2 g−1) and decre…
We report the structural, transport, and thermodynamic properties of the semiconducting, layered rare-earth iron oxyselenides $R$${}_{2}$O${}_{3}$Fe${}_{2}$Se${}_{2}$ ($R=\text{Ce, Pr, Nd, and Sm}$), which have crystal structures related to the arsenide superconductors except with in-plane oxygens within the Fe square…