Materials Literature
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Measuring temperatures at small scales, especially around nanoparticles, is a crucial step for a variety of applications in biomedicine and in optics. Here, we report on a novel method to map temperature in the medium surrounding silver nanoparticles dispersing them in a thermochromic mixture prepared using an organic…
Abstract The Cambridge Structural Database (CSD) provides a platform for sharing data generated from X-ray and neutron diffraction experiments. [1] It contains experimental determinations of the 3D structures of over 850 000 small organic and metal-organic compounds. In recent years, the rate of growth of the CSD has…
The failure of ductile materials subject to high thermal and mechanical loading rates is notably affected by material inertia. The mechanisms of fatigue-crack propagation are examined with particular emphasis on the similarities and differences between cyclic crack growth in ductile materials, such as metals, and corr…
Abstract C18H20CoN6O8, monoclinic, P21/c (no. 14), a = 22.012(2) Å, b = 6.8972(12) Å, c = 13.234(2) Å, β = 91.137(11)°, V = 2008.9(5) Å3, Z = 4, R gt(F) = 0.0436, wR ref(F 2) = 0.1078, T = 293(2) K.
This paper introduces a mock-up with a solid iron cylinder rotating in a fixed excitation frame powered by dc current. A uniform field is created in the rotating cylinder, which is driven by an external motor. The braking torque is measured, allowing the study of iron losses generated by a uniform rotating field. The…
The U.S. Environmental Protection Agency promulgated national emission standards for emissions of radionuclides other than radon from US Department of Energy facilities in Chapter 40 of the Code of Federal Regulations (CFR) 61, Subpart H. This regulatory standard limits the annual effective dose that any member of the…
A wide range of applications is based nowadays on analytical developments which allow a precise and effective approach and short time of computations compared with the time required for numerical methods; in this way these developments are suitable for calculations in real time. This work proposes an approach for solv…
Durability of concrete is defined as its ability to resist any form of deterioration, allowing it to retain its original form and quality after it has been exposed to the environment of its intended use. Sulfate attack causes concrete to lose its compressive strength through the decomposition of the products of hydrat…
Abstract Invited for the cover of this issue is the group of Ralf Haiges at the University of Southern California. The image depicts characters from the popular web comic “Cyanide & Happiness” alongside some of the cyanide complexes synthesized. Read the full text of the article at 10.1002/chem.201700611 .
The Inside Back Cover picture illustrates how Li addition stabilizes the hexagonal Na0.7MnO2 structure by suppressing orthorhombic distortion, thereby improving its cycling stability as the cathode in a Na-ion battery. More information can be found in the Article by J. Zhang and D. Y. W. Yu on page 1287 in Issue 6, 20…
Resumo: A textura e uma das principais caracteristicas dos solos, dada a sua estreita relacao com a retencao de agua, troca cationica, fixacao de fosforo e recomendacoes de calagem e adubacao que sao feitas com base em percentuais de argila; e tambem fundamental para caracterizacao de perfis de solos, em trabalhos de…
In this work, we report a first detailed study of the mesophasic behaviour of the calamitic liquid crystal, a (4,4′-bis(4″-carboxybelzyloxy)biphenyl derivate, labelled 9/2 RS/RS, showing an isotropic-isotropic-(columnar)-cubic phase behaviour on cooling. 1H NMR diffusometry allowed to distinguish between the two isotr…
The paper deals with a research of utilization of natural fibres of the plant Ensete ventricosum in an area of polymeric composites. A low-cyclic fatigue of composite materials was tested at composites with 1, 2, 3, 4 and 5 vol. % of filler in a form of short fibres 1 to 3 mm and 3 to 5 mm. They are short-fibre non-or…
We investigate the energy band structure of nanoporous silicon thin film using first principles calculation based on density functional theory (DFT) with the generalized gradient approximation (GGA). The calculation results show that the band gaps of nanoporous silicon increase with increasing porosity, increase with…
The strain energy in nanocomposites based on porous anodic aluminum oxide and filamentary nanoparticles of Cu, Ag, and Au is simulated numerically. The results allow us to estimate the contribution from mechanical stresses produced upon heating, due to differences between the thermal coefficients of the linear expansi…
Controlling the molecular assembling and nanomorphology of organic semiconductors is crucial to obtain high-performance electronic devices. In this work, we have first reported novel superlong salicylideneaniline nanobelts (mHBA) using the magnetic nanoparticle-assisted self-assembly process. Our results show that mag…
Carbon cloth was modified by graphene oxide, and then electropolymerized 2,6-Pyridinedicarboxylic acid (PDC) on the treated carbon cloth, which was as anode for microbial fuel cells. The power density of the modified carbon cloth reaches 1035 mW·m-2, which was 3.2 times larger than that of the MFCs with the unmodified…
A facile strategy for synthesis of hierarchical MnO@C nanoplates has been developed via one-step pyrolysis of Mn-glycolate coordination polymers. Core-shell MnO@C nanoparticles with ultrasmall sizes as the primary building blocks are interconnected to construct porous nanoplates. The unique architecture is favorable f…
Nanostructured nickel thin films were deposited on glass using glancing angle deposition (GLAD) technique. Cross-sectional field emission scanning electron microscopy images have shown that obtained Ni thin films consist of vertical, tilted or zigzag nano-scaled columns, while X-ray diffraction have shown that (111) o…
It is known that during solidification could occur as the expansion and shrinkage of the stone. Ordinary cements shrink, so we are particularly interested in shrinkage deformation and stress of cement stone. In the study of the shrinkage of heavy concrete, special attention should be paid to the impact compression of…