Materials Literature
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Abstract Balancing the interfacial interactions between a polymer and substrate is one of the most commonly employed methods to ensure the vertical orientation of nanodomains in block copolymer lithography. Although a number of technologies have been developed to meet this challenge, there remains a need for a univers…
Polymer-based nanoassemblies have emerged as viable platforms for the encapsulation and delivery of lipophilic molecules. Among the criteria that such carriers must meet, if they are to be effective, are the abilities to efficiently solubilize lipophilic guests within an assembled scaffold and to stably encapsulate th…
In the last decade, the importance of topographic properties of extracellular environments has been shown to be essential to addressing cell response, especially when replacing damaged tissues with functional constructs obtained in vitro. In the current study, densely packed sub-micron poly(3-hydroxybutyrate) (PHB) fi…
Classic Cabrera-Mott theory stipulates that the limited oxide-film growth results from electron tunneling from the metal through the oxide film to adsorbed oxygen. This leads to an electric field across the oxide film that assists ion migration for low-temperature oxide-film growth. Here, we show that the field-driven…
The aim of this study was to obtain saccharide (dextran and sucrose)-coated maghemite nanoparticles with antibacterial activity. The polysaccharide-coated maghemite nanoparticles were synthesized by an adapted coprecipitation method. X-ray diffraction (XRD) studies demonstrate that the obtained polysaccharide-coated m…
An investigation into the effect of surface roughness on corona discharge intensity of long-term operating conductors is presented. The electric field distortion level was found to increase linearly with surface average roughness Ra. At the corona inception voltages, the ionization intensity ξ in the ionization zone w…
As a room temperature multi-ferroic with coexisting anti-ferromagnetic, ferroelectric and ferroelastic orders, BiFeO(3) has been extensively studied to realize magnetoelectric devices that enable manipulation of magnetic ordering by an electric field. Moreover, BiFeO(3) is a promising candidate for ferroelectric memor…
The ability to provide large electric field enhancements renders triangular nanoprisms and branched nanoparticles very attractive for applications in surface-enhanced Raman spectroscopy (SERS). Theoretical studies on the optical properties of triangular prisms in a water solution are presented in this paper to determi…
An on/off SERS aggregation system has been designed to investigate carbohydrate-lectin interactions. Detection of the lectin ConA was achieved at pico molar levels. Discrimination was also demonstrated between two different carbohydrate moieties demonstrating the specific interaction between the carbohydrate and speci…
Nanoporous antimony-doped tin oxide (ATO) coatings with high surface area, optical transparency and electron transfer properties have been prepared using an interpenetrating inorganic–organic hybrid sol–gel approach. UV-Vis and X-ray photoelectron spectroscopic studies were carried out on the prepared materials in add…
Columnar stacks of N, N ′-di(2-(trimethylammoniumiodide)ethylene) perylenediimide (TAIPDI) n can host meso -tetrakis(4-sulfonatophenyl)porphyrin zinc tetrapotassium salt (ZnTPPSK 4 ) molecules at different ratios through the ionic and π–π interactions prompted by an aqueous environment. Photoexcitation of this host–gu…
The calculation results show that the bonding energy and electronic states of silicon quantum dots (Si QDs) are different on various curved surfaces (CS), for example, a Si-O-Si bridge bond on curved surface provides the localized levels in band gap and its bonding energy is shallower than that on facet. Curved surfac…
Blends of polypropylene (PP) and low-density polyethylene (LDPE) with and without ethylene-propylene-diene (EPDM) terpolymer as a compatibilizer were studied. Mechanical properties were chosen to estimate the compatibilization efficiency of EPDM. The interactions between phases were valued through glass transition shi…
Abstract In this study, we investigated the potential antibacterial properties of nanocrystalline diamond. In particular, we tested the effect of diamond nanoparticles (DNPs) on growth of the model gram‐negative bacterium Escherichia coli on solid, nutrient‐rich growth medium. We found that the presence of DNPs on aga…
The coupling and reconstruction of electronic degrees of freedom (such as charge, spin and orbital) at a heterointerface can lead to unexpected and exotic states of matter. In this study, using model systems consisting of multiferroic BiFeO(3) and ferromagnetic La(0.7)Sr(0.3)MnO(3), we review the current understanding…
Natural oils have been used in the production of plastics for a long time. However, the number of studies dedicated to polyurethane research has shown an increase only recently. Usually, petrochemical components are used in polyurethane synthesis. Nowadays, there have been attempts made to replace polyols in polyureth…
We have derived and implemented analytical gradients for broken-symmetry unrestricted density functional calculations (BS-UDFT) with removal of spin contamination by Yamaguchi's approximate spin projection method. Geometry optimizations with these analytical gradients (AGAP-opt) yield results consistent with those obt…
By dispersing aqueous precipitant in liquid paraffin to prepare a W/O emulsion then adding chitosan (CS) solution, CS microcapsules have been successfully prepared. It is a facile way to prepare polymer microcapsules by using aqueous precipitant or nonsolvent as template, which avoids the removal of template and would…
We report the occurrence of superconductivity, with maximum T${}_{c}=40$ K, in superlattices (SLs) based on two insulating oxides, namely CaCuO${}_{2}$ and SrTiO${}_{3}$. In these (CaCuO${}_{2}$)${}_{n}$/(SrTiO${}_{3}$)${}_{m}$ SLs, the CuO${}_{2}$ planes belong only to CaCuO${}_{2}$ block, which is an antiferromagnet…
Ashworth M.P., Ruck E.C., Lobban C.S., Romanovicz D.K., and Theriot E.C. 2012. A revision of the genus Cyclophora and description of Astrosyne gen. nov. (Bacillariophyta), two genera with the pyrenoids contained within pseudosepta. Phycologia 51: 684–699. DOI: 10.2216/12-004.1The araphid pennate diatom genus Cyclophor…