Materials Literature
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ZnO nanoflowers were synthesized by the hydrothermal process at an optimized growth\ntemperature of 200 ◦C and a growth/reaction time of 3 h. As-prepared ZnO nanoflowers were\ncharacterized by x-ray diffraction, scanning electron microscopy, UV–visible and Raman\nspectroscopy. X-ray diffraction and Raman studies revea…
This article proposes a kinetic and thermal study of the formic acid perhydrolysis in a semibatch process at various hydrogen peroxide concentrations (5.32–8.21 mol/L), formic acid molar inlet flow rates (0.04–0.22 mol/min), reaction temperatures (30–60 °C), and catalyst amount (0.0–10.6 g). A cation-exchange resin, i…
An organic switch: An open-shell dyad, consisting of an electron acceptor perchlorotriphenylmethyl radical unit linked to an electron π-donor tetrathiafulvalene unit through a vinylene π-bridge, was synthesized (see picture). The self-assembly of the dyad in solution induced by its intramolecular electron transfer was…
We present a spatially resolved approach for the solvent vapor annealing (SVA) of block copolymer thin films that permits the facile and relatively rapid manipulation of nanoscale ordering and nanostructure orientation. In our method, a localized (point) SVA zone is created through the use of a vapor delivery nozzle.…
The hydrothermal stability of mesoporous silica is critical for applications including catalytic processing of biofuels due to the presence of significant amounts of water. We have combined neutron diffraction intensity analysis with NLDFT analysis of nitrogen sorption isotherms to characterize the spatial distributio…
Attachment of poly(ethylene glycol) (PEG) to polymeric nanostructures is a general strategy for sterically shielding and imparting water solubility to hydrophobic payloads. In this report, we describe direct graft-through polymerization of branched, multifunctional macromonomers that possess a PEG domain and a hydroph…
Abstract The study investigates the scope for significant enhancements in shape‐memory properties in blends of thermoplastic polyurethanes (PUs) and polybenzoxazine (PB). PB was expected to serve as a second fixed phase in addition to hard segment of PU. The shape‐memory compounds were prepared in three steps. First,…
We have demonstrated that cysteine and glutathione induced edge-to-edge coupling of gold nanocubes (Au NCs) caused a band-selective enhancement of two-photon photoluminescence (TPPL). The photoluminescence intensity of the X-band of Au NCs was found to be enhanced up to 60-fold and 46-fold upon addition of cysteine an…
The ability to fabricate 3D spiraling structures using metal-assisted chemical etching (MaCE) is one of the unique advantages of MaCE over traditional etching methods. However, control over the chirality of the spiraling structures has not been established. In this work, a systematic parametric study was undertaken fo…
Polymers that respond in a productive fashion to their environment are under active development as they offer significant advantages over traditional materials. For example, polymers with the ability to self-heal and recover a significant fraction of their initial properties after being subjected to a damage event are…
SO x poisoning effects in environmental catalysis have long been recognized as a challenge in development of efficient catalysts for industrial applications. In this paper, a theoretic method combining density functional theory and standard thermodynamic data (enthalpy and entropy) was applied to investigate the SO 2…
Abstract Thickness‐dependent structure–property relationships in strained SrRuO 3 thin films on GdScO 3 (GSO) substrates are reported. The film is found to have epitaxially stabilized crystal structures that vary with the film thickness. Below 16 nm, the √2 a pc × √2 a pc × 2 a pc monoclinic structure is stabilized wh…
Barium ferrite nanoplates with the nominal composition BaFe 12– x M x O 19, where M = Sc, In, or Cr and x = 0–0.5, were hydrothermally synthesized at 160 and 240 °C. The incorporation of the substituent ions into the barium ferrite particles was confirmed with energy-dispersive X-ray spectroscopy. The effects of the t…
Heat conduction in three two-dimensional (2D) momentum-conserving nonlinear lattices are numerically calculated via both nonequilibrium heat-bath and equilibrium Green-Kubo algorithms. It is expected by mainstream theories that heat conduction in such 2D lattices is divergent and the thermal conductivity κ increases w…
This contribution describes the development of tape casting for solid oxide fuel cells (SOFCs) anode supports starting with the characterization of the powders and ending with manufacturing of cells for stack testing. After casting the support, full cells were prepared by screen printing and sintering of the functiona…
Magnetic resonance is considered to be a necessary condition for metamaterial perfect absorbers, and dual-band absorbers can be composed of a pair of metallic layers with anti-parallel surface currents. We designed and fabricated a tunable dual-band perfect absorber based on extraordinary-optical-transmission (EOT) ef…
Semiconducting polymer dots (Pdots) recently have emerged as a new class of ultrabright fluorescent probes with promising applications in biological detection and imaging. We developed photoswitchable Pdots by conjugating photochromic spiropyran molecules onto poly[9,9-dioctylfluorenyl-2,7-diyl)-co-1,4-benzo-{2,1'-3}-…
ABSTRACT Inorganic nanomaterials form the bulk of the nanomaterials (NMs) found in consumer products that can easily enter into the food chain, biosystems and environment. Because of their sizes and associated material characteristics, many studies have shown a fair degree of toxicity associated with these NMs. This r…
Formation of nanoscale helium (He) bubbles in reduced activation ferritic/martensitic steels may lead to degradation of mechanical properties of materials. Transmission electron microscopy (TEM) has commonly been used to image the Fresnel contrast of He bubbles, using an underfocus of 0.5-1 µm. This paper presents our…
Dendrimers and their less well-defined cousins, hyperbranched polymers, are widely investigated as scaffold materials in tissue engineering, as drug delivery agents, and in diagnostic imaging applications. Despite the large interest of using these unique materials as polymer-based nanoparticles in biomedical applicati…