Materials Literature
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Invisible cloak derived from the coordinate transformation requires its constitutive material to be anisotropic. In this work, we present a cloak of graded-index isotropic material based on the geometrical optics theory. The cloak is realized by concentric multilayered structure with designed refractive index to achie…
A method for characterizing the magnetoelastic dependence of both Young's modulus and damping on the magnetic field is presented. It is based on laser Doppler vibrometry and free longitudinal vibration in soft ferromagnetic rods and wires, and offers a broad range of improved features including accuracy, lack of inter…
Adsorption of well-defined fluorinated polymers onto clinically relevant poly(tetrafluoroethylene) (PTFE) substrates offers an attractive method for modifying the surface properties of chemically inert PTFE. Reversible addition-fragmentation chain transfer (RAFT) was successfully used for synthesis of the polymers in…
Recently, we reported electro-optical switching in a blue phase III (BPIII) stabilized using a T-shaped chiral liquid crystal. For this study, we investigated electro-optical effects in BPIII and in BPII of a binary system of a non-chiral T-shaped nematic liquid crystal and a chiral compound. An electric-field-induced…
Based on a mesoscale model developed recently for polyamide-66, here we present a simple algorithm for reinserting the atomistic details neglected in the coarse-grained (CG) description. The resulting CG and detailed models are tested successfully against several structural properties including the number of hydrogen…
Abstract The photooxidative degradation of acrylic fibers was investigated with two different fiber‐spinning processes, that is, dry spinning and wet spinning. Several analytical methods were used in this study: viscometry, X‐ray diffraction, Fourier transform infrared spectroscopy, optical measurements, and mechanica…
The ideas related to potential-energy landscape and cooperativity of atomic rearrangements are widely discussed in the research field of glass transition. The crossover transition from high-temperature regime to potential-energy-landscape-influenced regime was extensively studied using the concept of inherent structur…
Abstract In the field of polymer clay nanocomposites, naturally occurring smectite group of clays are the most commonly used nanofillers. In the present work, smectite group clay, hectorite was synthesized in the laboratory with an intention to understand the structure–property relationship of polymer nanocomposites,…
Glycal-based bolaforms serve as synthetically flexible components of molecular self-assembly. The compounds are prepared in good yield by a Ferrier reaction between triacetylglucal or -galactal or diacetylxylal and a long chain alpha,omega-diol, followed by deacetylation under Zemplen conditions. The reactions are ste…
Colloid Systems Interfaces Emulsions Nano-Particles Surfactants Rheology Wetting Micro-Emulsions Self-Assembly
In the automated image analysis of crystallization experiments, representative examples of outcomes can be obtained rapidly. However, while the outcomes appear to be diverse, the number of crystalline outcomes can be small. To complement a training set from the visual observation of 147 456 crystallization outcomes, a…
This work is devoted to the evaluation of a change in the barrier height in the case of an atom jump to the nearest vacancy site under strain and to obtaining the vacancy diffusion equation taking into consideration the strain influence. Earlier, we suggested a new approach to solving the problem of the influence of e…
Abstract Core/shell nanowires of Al/Al 2 O 3 are obtained by decomposition of tert ‐butoxyalane on metal, silicon or glass substrates heated up to 650 °C without use of a noble metal seed. These biphasic nanowires are characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), scanning energy dispers…
Multistep colloidal chemical routes were employed to synthesize Pt/Au, Pt/iron oxide (IO), and Au/Pt/IO hybrid nanoparticles (NPs). The starting templates, Pt NPs, were synthesized by controlling the decomposition kinetics of platinum acetylacetonate in oleylamine. The morphologies of binary metal Pt/Au hybrid NPs wer…
We report the effects of partial substitution of Nb onto the V sites of ${\text{Fe}}_{2}\text{VAl}$ by measuring the electrical resistivity, Seebeck coefficient, and thermal conductivity as a function of temperature. It is found that the Nb substitution effectively produces a negative chemical pressure in the system.…
Lipid bilayer of 1,2-dimyristoyl-sn-glycero-3-phosphoethanolamine (DMPE) was formed on the surface of a linearly growing polyanion/polycation polyelectrolyte multilayer (PEM) film prepared by the layer-by-layer (LbL) technique. The PEM films were prepared with two strong polyelectrolytes—poly(sodium 4-styrenesulfonate…
The structural evolution of a single-layer latex film during annealing was studied via grazing incidence ultrasmall-angle X-ray scattering (GIUSAXS) and atomic force microscopy (AFM). The latex particles were composed of a low-Tg (-54 degrees C) core (n-butylacrylate, 30 wt %) and a high-Tg (41 degrees C) shell (t-but…
The number and variety of macromolecular structures in complex with ;hetero' ligands is growing. The need for rapid delivery of correct geometric parameters for their refinement, which is often crucial for understanding the biological relevance of the structure, is growing correspondingly. The current standard for des…
Ab initio molecular orbital calculations were used to examine the adsorption of H 2 molecules on a Ti 2 −C 2 H 4 complex. Dependence of the adsorption energy on the computational method was elucidated, and the importance of Gibbs free energy correction on the adsorption energy was clarified. However, van der Waals int…
Abstract The mechanical properties and morphology of UHMWPE/PP(80/20) blend molded by injection and compression‐molding were investigated comparatively. The results showed that the injection‐molded part had obviously higher Young's modulus and yield strength, and much lower elongation at break and impact strength, tha…