Materials Literature
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Most of the previous microwave near-field probes and imaging techniques focused on surface imaging, providing ultrahigh lateral resolution. Few microwave near-field probes were developed for subsurface detection, offering both high lateral and depth resolution with varying degrees of effectiveness. In this work, a nov…
Density functional theory (DFT) calculations were carried out in a study of CO and NO adsorptions on different iron sites of Fe-ZSM-5. The adsorption energies and distances were similar for CO adsorption on both small and large cluster calculations. The adsorption energies (Δ E ) and enthalpies (Δ H ) found for NO ads…
ZnO nanorod arrays were grown on Si substrate utilizing low-temperature hydrothermal method.The X-ray diffraction(XRD) and scanning electron microscope(SEM) measurements were carried out to investigate the crystalline and morphology of the as-grown ZnO nanorods.Results indicate that the hexagonal prism ZnO nanorod arr…
Integration of multiple materials in a controllably programmed manner on the nanoscale has led to the evolution of the next generation of nanoparticles. We have explored the formation of bifunctional europium sulfide − cadmium chalcogenide composite nanostructures, as both of the semiconductor materials exhibit intrig…
Using analytical and numerical methods, we analyse the Raj–Ashby bicrystal model of diffusionally accommodated grain-boundary sliding for finite interface slopes. Two perfectly elastic layers of finite thickness are separated by a given fixed spatially periodic interface. Dissipation occurs by time-periodic shearing o…
Interaction of light and ac electric fields with a nematic liquid crystal (NLC) doped with nanosized second-generation carbosilane codendrimers containing terminal azobenzene fragments has been studied. A first-order Freedericksz transition in the linearly polarized light, accompanied by an intrinsic bistability in a…
In this work, we have developed a novel SERS-based approach to detect hydrogen peroxide (H2O2) scavenging activity by using gold nanoshell precursor nanocomposites (SiO2/GNPs) as nanoprobes. H2O2 can reduce AuCl4- to Au0 and enlarge the gold nanoparticles (GNPs) that attached on the surface of SiO2. As the concentrati…
Accurately defining species boundaries in the green algae (Chlorophyta) is integral for studies of biodiversity and conservation, water-quality assessments, and the use of particular species as paleoindicators. Recent molecular phylogenetic and SEM analyses of the family Hydrodictyaceae (Chlorophyta) resolved three ph…
Al(BH4)3⋅6 NH3 wurde auf einfachem Weg hergestellt und seine Komposite können bei <140 °C mit günstiger Kinetik mehr als 10 Gew.-% Wasserstoff durch die schwach exotherme Kombination von N-H- und B-H-Bindungen freisetzen. Die hohe Wasserstoffspeicherkapazität, einfache Dehydrierung und relativ hohe Luftstabilität mach…
Fibrous scaffolds are finding wide use in the field of tissue engineering, as they can be designed to mimic many native tissue properties and structures (e.g., cardiac tissue, meniscus). The influence of fiber alignment and scaffold architecture on cellular interactions and matrix organization was the focus of this st…
Abstract Pulsed laser induced plasma in water produces multiple bubbles with the passage of laser pulse. Shadowgraphy and beam deflection set-up is used to study the temporal and spatial evolution of these bubbles as a function of distance from the laser focus. The formation of multiple bubbles, bubble coalescence, an…
The inhibition efficacy of Punica granatum extract on the corrosion of Brass in 1N HCl has been studied by mass loss measurments at various time and temperature. The inhibition efficiency is markedly higher in HCl environment with addition of Punica granatum extract compared with those in the inhibitor free solution.…
We present results of monomer-resolved Monte Carlo simulations for a system of amphiphilic dendrimers of the second generation. Our investigations validate a coarse-grained level description based on the zero-density limit effective pair-interactions for low and intermediate densities, which predicted the formation of…
A key limitation for various applications of niobium (Nb)-containing thin films is the lack of remarkably economic, simple and versatile methods for effectively generating large-scale ordered arrays. We used well-aligned Nb2O5 rod-like arrays as a sacrificial precursor to demonstrate how a wide range of niobate arrays…
Tetranuclear [Ni(4)(Hpzaox)(2)(pzaox)(2)(py)(4)](ClO(4))(2)·2py (1), [Ni(4)(Hpzaox)(2)(pzaox)(2)(py)(4)](NO(3))(2)·4py (2), and two-dimensional (2D) [Ni(4)(Hpzaox)(2)(pzaox)(2)(H(2)O)(2)](NO(3))(2)·2H(2)O (3) are prepared via the reaction of NiX(2)·6H(2)O and pyrazine-2-amidoxime (H(2)pzaox). All compounds contain [Ni…
Synthesis of large scale arrays of ZnO nanospikes with ultra sharp tips (<10 nm) is achieved through a newly developed chemical methodology. This is the first room temperature report of growing 1D ZnO nanostructures on heterogeneous substrates. The deposition was performed on various substrates including planar (silic…
We study theoretically and experimentally the hemi-urchin shaped zinc oxide (ZnO) nanostructures for broadband and wide-angle antireflection coatings. The antireflective characteristics of hemi-urchin shaped ZnO nanostructures, which can be formed by integrating one-dimensional (1D) nanostructures (i.e., nanorods) on…
This Minireview is a critical survey of results accumulated during the last decade on the characterization of carbon nanotubes using a combination of electrochemical and spectroscopic methods. The article updates earlier reviews on the topic with special emphasis to recent progress in the field.
Quantum confinement in zero-dimensional silicon nanocrystals (nC) in the quantum dot (QD) configuration has triggered a tremendous interest in nanostructured device technology. However, the formation of Si-QDs eventually proceeds through multi-step routes and involves high temperature processing that impedes preferred…
A flexible viologen carboxylic acid derivative forms single- and triple-stranded helices by hydrogen-bonding interactions, and undergoes pH-triggered helical transformation by a water-mediated solid-state conversion (see picture). This transformation is accompanied by a fluorescence signal change that can be directly…