Materials Literature
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The purity and uniformity issues with tunable structures are significant challenges for the fabrication of porous fibers. In the present work, we reported the fabrication of mesoporous SiC fibers via electrospinning of polyureasilazane and polyvinylpyrrolidone combined with subsequent high-temperature pyrolysis treatm…
In this work we present the results of an inelastic x-ray scattering experiment detailing the behavior of the transverse acoustic [110] phonon in BaFe${}_{2}$As${}_{2}$ as a function of temperature. When cooling through the structural transition temperature, the transverse acoustic phonon energy is reduced from the va…
SUMMARY: We report a case of a thermal burn that occurred during MR imaging likely caused by invisible silver-embedded microfibers in the fabric of an undershirt. As the prevalence of fabric containing nondetectable metallic microfiber increases in athletic and "tech" clothing, the importance of having patients change…
Three highly water-soluble near-infrared emissive polymeric BODIPY dyes (polymers A–C) were prepared by the palladium-catalyzed Suzuki polymerization of highly water-soluble 2,6-diiodo-3,5-distyryl-BODIPY dyes with 1,4-phenyldiboronic acid and 2,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-di[1-[2-(2-methoxy…
Carbon-carbon composites (CCCs) are well recognized structural materials which are generally known for their high strength and thermal conductivity, low density, and open cell structure. They have attracted great interest for aerospace applications, such as bushings used in jet engines, and potentially in future hyper…
We introduce a new design approach for surface-enhanced Raman spectroscopy (SERS) substrates that is based on molding the optical powerflow through a sequence of coupled nanoscale optical vortices "pinned" to rationally designed plasmonic nanostructures, referred to as Vortex Nanogear Transmissions (VNTs). We fabricat…
Noble metals (Ru, Rh, Pd, Ag, Os, Ir, Pt, and Au) do not form hydrides with hydrogen under ambient conditions originated from the extremely low solubility of hydrogen in them. Because of such limitation, finding these hydrides under ambient conditions is scarce. Here we use a combination of particle swarm optimization…
A promising dual-mode solar spectral converter CaLaGa3S6O:Ce3+,Pr3+ for Si solar cells has been successfully developed. The structure, photoluminescence excitation and emission spectra in the UV-Vis-NIR region, and the decay curves have been systematically investigated. The results show that CaLaGa3S6O:Ce3+,Pr3+ exhib…
We report the temperature and frequency dependent dielectric measurements and ac magnetic susceptibility of chemically synthesized DyFeO3 nanoparticles (size ∼50–60 nm). The measurement of the dielectric properties was carried out in a broad temperature (20–325 K) and frequency (1–106 Hz) range. The non-Debye type dip…
Abstract Hyperbranched PEI and urea‐functionalized PEI amphiphiles are employed as additives in NBR compounding. Polarity design governing phase separation, PEI migration and PEI‐mediated self‐healing of NBR is demonstrated. The compatibility of PEI and NBR decreases with increasing molecular weight of PEI and with de…
CuS nano/submicro materials with different morphologies were synthesized with spherical, tubular, leaf-like and strip type structures in a simple aqueous system under microwave irradiation and sunlight and employing Cu (CH 3 COO) 2 , CuSO 4 ·5H 2 O, CuCl 2 , and as copper source and H 2 NCSNH 2 , Na 2 S 2 O 3 ·5H 2 O…
We propose a primitive model of Janus ellipsoids that represents particles with an ellipsoidal core and two semisurfaces coded with dissimilar properties, for example, hydrophobicity and hydrophilicity, respectively. We investigate the effects of the aspect ratio on the self-assembly morphology and aggregation process…
A long-standing problem of conventional cancer chemotherapy is the lack of tumor specificity. Tumor-targeting drug-delivery systems have been explored to overcome this problem. These systems combine a powerful cytotoxic anticancer agent with a tumor-targeting molecule via a 'smart' linker to form highly efficacious dr…
Herein we report an entirely different route for the synthesis of graphene nanosheets (GNs) based nanofluids without surfactant or harsh chemical treatments, by reducing the alkaline graphite oxide suspension in ethylene glycol (EG) and de-ionized (DI) water based fluids by a simple thermal treatment. The thermal cond…
Heterostructured CdS nanowires with PbS deposits forming p-n junctions have been synthesized by successive cation exchange. The method developed herein opens up the possibility of preparing a spatially distributed heterojunction-based multifunctional electrode. The (photo)electrochemical activity of the material may b…
We present a field modulation technique that increases the operating frequency of magnetoelectric (ME) sensors so that it can match the mechanical resonance frequency of the sensor. This not only improves the sensitivity but also reduces the effect of 1/f noise that is inherent at low frequencies. The technique, which…
The structural, magnetic, electrical, and thermal transport properties of Ca3Co4O9 ceramics sintered under high magnetic field were investigated. Crystal grain texturing and densification were achieved through cold-pressing and high-magnetic-field sintering techniques. The c-axis of the layered crystal grain was partl…
The effects of carrier concentration, composition, and temperature on the thermoelectric properties of high quality n-type InGaN grown by metal organic chemical vapor deposition (MOCVD) were systematically investigated. The Seebeck coefficient was found to decrease and electrical conductivity increase with increasing…
We report an efficient and powerful green process to enhance the antibacterial activities of the Leonuri herba extract. Plant sources, especially leaves and herbs, are precious for the generation of gold and silver nanoparticles. Various kinds of polyphenols and hydroxyl groups are capable of processing a reduction re…
We report here results of ab initio metadynamics simulations of structural transitions in boron nitride at high pressures. Transitions starting from $s{p}^{2}$ bonded (graphite-like) structures are studied in a temperature range from 300 to 3000 K and pressures from 20 to 31 GPa. Rhombohedral boron nitride (r-BN) was…