Materials Literature
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Since its introduction in 1994, the preparation of ordered porous polymer films by the breath figure (BF) method has received a considerable interest. The so-called “honeycomb” (HC) films exhibit a hexagonal array of micrometric pores obtained by water droplet condensation during the fast solvent evaporation performed…
pH-sensitive polymersomes have been stabilized by UV cross-linking after incorporation of an enzyme in a synthetic bio-nanoreactor without transmembrane proteins. This stabilization allows the reversible swelling and deswelling of the polymersomes upon changes in the pH value. The controlled reaction of the enclosed e…
Abstract Biomimetic scaffolds mimic important features of the extracellular matrix (ECM) architecture and can be finely controlled at the nano‐ or microscale for tissue engineering. Rational design of biomimetic scaffolds is based on consideration of the ECM as a natural scaffold; the ECM provides cells with a variety…
The superb mechanical and physical properties of individual carbon nanotubes (CNTs) have provided the impetus for researchers in developing high-performance continuous fibers based upon CNTs. The reported high specific strength, specific stiffness and electrical conductivity of CNT fibers demonstrate the potential of…
Silver nanoparticles (AgNPs) are present in the environment and a number of ecotoxicology studies have shown that AgNPs might be highly toxic. Nevertheless, there are little data on their stability in toxicology media. This is an important issue as such dynamic changes affect exposure dose and the nature of the toxica…
Abstract Supercapacitor electrode materials are synthesized by carbonizing a common livestock biowaste in the form of chicken eggshell membranes. The carbonized eggshell membrane (CESM) is a three‐dimensional macroporous carbon film composed of interwoven connected carbon fibers containing around 10 wt% oxygen and 8 w…
We present an equation of state (EOS) that describes how the hydrostatic change in surface area is related to two-dimensional in-plane pressure ($\mathcal{F}$) and yields the measure of a material's resilience to isotropic stretching (the layer modulus $\ensuremath{\gamma}$) as one of its fit parameters. We give resul…
We investigated the width (N) dependence on the magnetization of N-ZSiC NR with electron and hole doping on the basis of systematic DFT calculations. The critical values of the upper and down critical concentration to give the maximum and zero magnetic moment at edge Si/C atoms by electron/hole doping (<TEX>$x_{up,e}$…
The influence of H, C, N and O impurities on the phase stability of titanium was studied by first principles total energy calculations. The occupation energies of the impurities were estimated to identify their site preferences. All impurities considered prefer to occupy the octahedral site except for H, which tends t…
Two series of hydrogen-bonded liquid crystal complexes have been obtained from binary mixtures of 4, 4′-bipyridine and 2-fluoro-6-X-4-alkoxybenzoic acids (where X = H or F) with a molar ratio of 2:1. The fluorinated proton donors were synthesized firstly and then their chemical structures measured by EA, FTIR, 1H NMR…
We report on our study of the static and dynamic wetting property of hydrophobic surfaces with micro- and dual micro/nano-scale structures. Simulations based on the lattice Boltzmann method showed that the apparent contact angle of water droplets on hydrophobic surfaces with micro-scale structures increases as solid a…
The growth rates of edge-on lamellar polymer crystals in variable thickness films were investigated in terms of dynamic Monte Carlo (MC) simulations. The growth rates linearly decreased with decreasing film thickness for the thinner films and were nearly constant for the thicker films. The mean stem lengths (crystal t…
Nematic liquid crystal E7 (core) was microencapsulated into the poly(methyl methacrylate) (PMMA, shell) via the solvent evaporation method. The morphology of microcapsules depends importantly on the initial PMMA/E7 ratio in oil phase. Solvent evaporation temperature, as well as the co-solvent, could further influence…
The stress-induced phase transformation characteristics of unirradiated and proton beam irradiated NiTi alloy were investigated at different tests temperatures. The wire-shaped NiTi specimens were irradiated by 2 MeV proton beam for 30 min at room temperature to a flux of 1019 protons/m2 s. Engineering stress–strain (…
Thin carbon and metal foils have been used in heavy ion accelerators for charge stripping. The power dissipated by a particle beam in a foil can be as high as 3 kW or greater, which results in short lifetimes of conventional stripper foils. Graphene stripper foils can overcome critical limitations of other materials d…
Abstract Two different thermally enhancing coating materials, namely, phase‐change materials (PCMs) and silicon carbide (SiC), which are both capable of managing heat storage, were coated directly onto breathable waterproof nylon, either alone or together. The comfort properties of 20 wt % PCM‐coated fabric (20PCM) an…
The structural transition occurring in droplets of nematic liquid crystals formed in a polymer in magnetic field is studied. The transition is caused by field-driven weakening of tangential surface anchoring and develops following two scenarios: bipolar structure/homogeneous structure or bipolar structure/radial struc…
Certain models with purely repulsive pair interactions can form cluster crystals with multiply-occupied lattice sites. Simulating these models' equilibrium properties is, however, quite challenging. Here, we develop an expanded isothermal-isobaric $[N]pT$ ensemble that surmounts this problem by allowing both particle…
In this paper, we report the synthesis of polycrystalline samples with nominal compositions Bi 0.6− x La x Ca 0.4 MnO 3 (0.0⩽ x ⩽0.6) via the solid state reaction route and our study of their structural, magnetic and electrical transport properties with the variation of doping concentration of La. Magnetic measurement…
Empowered by evolutionary selective pressures that yield biopolymers with properties optimized for survival, Nature often proves to be the most creative synthetic organic chemist. Scientists across disciplines have been confronting the challenge of trying to improve on materials that Nature produces by focusing on the…