Materials Literature
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Glucan particles (GPs) are hollow, porous 2-4 μm microspheres derived from the cell walls of Baker's yeast (Saccharomyces cerevisiae). The 1,3-β-glucan outer shell provides for receptor-mediated uptake by phagocytic cells expressing β-glucan receptors. GPs have been used for macrophage-targeted delivery of soluble pay…
We report on the photoluminescence in perfectly aligned Eu-doped ZnO nanowire arrays that are prepared on sapphire substrates using a vapor transport method with doped sol–gel precursor powder as the vapor source. Under the UV light excitation, Eu 3+ -related red emission is observed in the Eu-doped ZnO nanowire array…
A simple methodology is developed to directly synthesize three-dimensional (3D) electrochemically supercapacitive arrays, consisting of multiwalled carbon nanotubes conformally covered by nanocrystalline vanadium nitride, firmly anchored to glassy carbon or Inconel electrodes. These nanostructures demonstrate a respec…
We report a new class of turn-on surface enhanced Raman scattering (SERS) sensors for the sensitive and selective detection of cadmium ion (Cd 2+ ) by taking advantage of the interparticle plasmonic coupling generated in the process of Cd 2+ -selective nanoparticle self-aggregation. The SERS-active nanoparticles consi…
Dacron® (polyethylene terephthalate) and Goretex® (expanded polytetrafluoroethylene) vascular grafts have been very successful in replacing obstructed blood vessels of large and medium diameters. However, as diameters decrease below 6 mm, these grafts are clearly outperformed by transposed autologous veins and, partic…
Many spheres of influence: Surface coating of monodisperse polystyrene (PS) nanosphere seeds with a phenol-containing polymer (PF) and then silica forms a dual core–shell structure PS@PF@SiO2 (see picture). Subsequent pyrolysis results in discrete, dispersible, and uniform hollow carbon nanospheres (HCSs). The outer s…
Titanium dioxide nanoparticles (TiO(2)-NPs) are produced in large quantities, raising concerns about their impact for human health. The aim of this study was to deeply characterize TiO(2)-NPs genotoxic potential to lung cells, and to link genotoxicity to physicochemical characteristics, e.g., size, specific surface ar…
We have investigated the self-assembly behavior of fluorenyl-9-methoxycarbonyl (Fmoc)-FG, Fmoc-GG, and Fmoc-GF and compared it to that of Fmoc-FF using potentiometry, fluorescence and infrared spectroscopy, transmission electron microscopy, wide-angle X-ray scattering, and oscillatory rheometry. Titration experiments…
Ein farbenfroher Haufen: Auf 2,2′-Biindenyl-Fluorophoren aufgebaute Farbstoffe zeigen einstellbare Festkörperemissionsfarben, welche das sichtbare Spektrum von Blau bis Rot abdecken. Die nichtplanare Konformation der Farbstoffe in Kristallen führt zu einer hellen tiefblauen Emission für 1–3 und zu einer grünen Emissio…
Insertion of just a few impurity atoms in a host semiconductor nanocrystal can drastically alter its phase, shape, and physical properties. Such doped nanomaterials now constitute an important class of optical materials that can provide efficient, stable, and tunable dopant emission in visible and NIR spectral windows…
A colorful bunch: Dyes based on 2,2′-biindenyl fluorophores exhibit tunable solid-state emission colors that cover the whole visible region from blue to red. The nonplanar conformation of the dyes in crystals result in bright deep-blue emission for 1–3, and green emission for 4. Furthermore, the two crystalline forms…
Boron nitride (BN) micro particles modified by silane coupling agent, γ‐aminopropyl triethoxy silane (KH550), are employed to prepare BN/epoxy resin (EP) thermal conductivity composites. The thermal conductivity coefficient of the composites with 60% mass fraction of modified BN is 1.052 W/mK, five times higher than t…
In contrast to the many methods of selectively coupling olefins, few protocols catenate saturated hydrocarbons in a predictable manner. We report here the highly selective carbon-hydrogen (C-H) activation and subsequent dehydrogenative C-C coupling reaction of long-chain (>C(20)) linear alkanes on an anisotropic gold(…
Aiming at preventing restacking of individual graphene sheets by using a simple green hydrothermal route, we have introduced carbon nanotubes to act as the spacer in fabricating a three-dimensional (3-D) hierarchical structure with graphene sheets. These 3-D hierarchical structure materials have been used to fabricate…
The thermal conductivity, \ensuremath{\kappa}, of single layers of hexagonal boron nitride (h-BN), as well as that of bulk h-BN have been calculated utilizing an exact numerical solution of the phonon Boltzmann transport equation. The stronger phonon-phonon scattering in h-BN is revealed as the cause for its lower \en…
Among all cancer treatment options, chemotherapy continues to play a major role in killing free cancer cells and removing undetectable tumor micro-focuses. Although chemotherapies are successful in some cases, systemic toxicity may develop at the same time due to lack of selectivity of the drugs for cancer tissues and…
While MnO(2) is a promising material for pseudocapacitor applications due to its high specific capacity and low cost, MnO(2) electrodes suffer from their low electrical and ionic conductivities. In this article, we report a structure where MnO(2) nanoflowers were conformally electrodeposited onto carbon nanotube (CNT)…
Abstract Superhydrophobic and superoleophilic polyester materials are successfully prepared by one‐step growth of silicone nanofilaments onto the textile via chemical vapor deposition of trichloromethylsilane. The successful growth of silicone nanofilaments is confirmed with scanning electron microscopy, energy‐disper…
The recently discovered Fe-pnictide and chalcogenide superconductors display low-temperature properties suggesting superconducting gap structures which appear to vary substantially from family to family, and even within families as a function of doping or pressure. We propose that this apparent nonuniversality can act…
Formation of wall friction force by turbulent oil flow and resulting change of pipe’s stress-strain state are studied. Three-dimensional model of stress-strain state of pipe with internal corrosion defect loaded by internal pressure, friction caused by motion of oil and by temperature is presented. Analysis of main re…