Materials Literature
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This paper presents a green and cost-effective recipe for the synthesis of blue-emitting ZnO nanoparticles (NPs) using cellulose bio-templates. Azadirachta indica (neem) leaf extract prepared in different solvents were used as biological templates to produce nanostructures of wurtzite ZnO with a particle size ~12-36 n…
We examine the fracture of a quasi-two-dimensional surfactant-laden aqueous foam under an applied driving pressure, using a network modelling approach developed for metallic foams by Stewart & Davis (J. Rheol., vol. 56, 2012, p. 543). In agreement with experiments, we observe two distinct mechanisms of failure analogo…
We investigated the impact of introducing an ultra-high Sn content Ge1−xSnx interlayer on the electrical properties at the metal/Ge interface. We achieved epitaxial growth of a Ge1−xSnx thin layer with an ultra-high substitutional Sn content of up to 46% on a Ge(001) substrate by considering the misfit strain between…
Hot stamping of high strength automotive body parts is a key technology to fulfill safety requirements and CO2-emmision limit values which are made by the EU. In the last ten years, high effort was made to improve the hot stamping process. Besides optimizing workflow and heating of the sheet metal blanks, new tools st…
Reaction of N-(4-pyridyl)picolinamide (4-ppa), N-(4-pyridyl)nicotinamide (4-pna), N-(4-pyridyl)isonicotinamide (4-pina), and N-(2-pyridyl)isonicotinamide (2-pina) with divalent metal salts led to the formation of six new coordination complexes. The X-ray structure of [Zn(4-ppa)2Cl2] (1) shows a mononuclear structure w…
Optics are not keeping up with the pace of laser advancements. The laser industry is rapidly increasing its power capabilities and reducing wavelengths which have exposed the optics as a weak link in lifetime failures for these advanced systems. Nanometer sized surface defects (scratches, pits, bumps and residual part…
For the strongly correlated topological insulator SmB 6 we discuss the influence of a 2 × 1 reconstruction of the (001) surface on the topological surface states. Depending on microscopic details, the reconstruction can be a weak or a strong perturbation to the electronic states. While the former leads to a weak backf…
During aircraft or spacecraft missions, ice accumulates on different parts of their surface elements. An important parameter affecting the ability to remove this ice from the surface is the heat transfer characteristics of the accumulated ice. The ice heat transfer is related to the process of ice formation and its de…
In this study, parameters of α-C2SH synthesis from limestone and quartz sand were determined and compressive strength values of the hydraulic cementitious binder, manufactured on its basis, were established. The results show that slow hydrothermal reactions in the calcium oxide–quartz–water system can be intensified u…
The Frattini test and strength activity index (SAI) test have been commonly used methods to assess the pozzolanic activity of pozzolan by measuring its reaction extent, which would be affected by the sulfate content in pozzolan and the cement used. This study investigates the effect of sulfate content in sulfate-rich…
The synthesis of acyclic cucurbit[n]uril dendrimers G1-G3 that bear four dendrons on their aromatic sidewalls via thiolate S(N)2 chemistry is reported. G1-G3 are polycationic and can bind to pEGFP plasmid DNA as shown by dynamic light scattering (DLS), gel electrophoresis, and scanning electron microscopy (SEM). The g…
In this paper, the microstructure, hardness, tensile deformation and fracture behavior of a structural steel (ASTM A572-Grade 50) is presented and discussed. Specifically, the influence of test specimen orientation on microstructure of the as-provided material and resultant influence of microstructure on hardness, ten…
In future, tunneling and mining will play a major role due to the opening of new resources and living environment, as an irreversible consequence of the growing world population. To improve the efficiency of a tunneling or mining project, an increased durability of the used tools and the knowledge about the remaining…
Manganese is widely used in many fields. Many efforts have been made to recover manganese from low-grade pyrolusite due to the depletion of high-grade manganese ore. Thus, it is of practical significance to develop a clean, energy-saving and environmentally friendly technical route to reduce the low-grade pyrolusite.…
Five new coordination polymers (CPs), CPO-68-M (M = Zn, Mn, and Co) and CPO-69-M (M = Ca and Cd), were synthesized by solvothermal methods using 4,4′-dimethoxy-3,3′-biphenyldicarboxylic acid as the organic linker. The three-dimensional frameworks are formed by metal carboxylate chains that are separated by the linker.…
Structural comparison indicates that the loop region between β3 and β4 of SsArd1 is extended relative to the corresponding region in mesophilic Nats, and forms a plastic hydrogen-bond network mainly at two serine residues. Strikingly, two single-point mutants showed ∼3 °C decrease in melting temperature, and two other…
Efforts are being made to reduce carbon dioxide formation in the cement industry, and studies continue to show the effectiveness of blast furnace slag (BFS) as a cement substitute. BFS is well known for its hardening mechanism in ordinary Portland cement or for alkali activation owing to its latent hydraulic property.…
This review article discusses about various aspects that make graphene and graphene nanosheets/binary transition metal oxide (GNS/BTMO) composites apt for their use as anode materials in lithium ion batteries (LIB). GNS/BTMO composites are categorized into three types based on the type of local contact between GNS and…
Microarc oxidation (MAO) coatings exhibit loose surfaces, big micropores and porosity that lead to shortcomings in mechanical properties. Three kinds of MAO coatings were prepared on TC4 alloys (Ti–6Al–4V) in electrolyte and treated by laser surface melting (LSM) with various power densities. Compactness of the coatin…
The performance of photoresponsive organic FETs (photOFETs) intimately depends on their optical absorption and charge carrier transport property. We report on red light responsive photOFETs based on various device structures utilizing neodymium phthalocyanine (NdPc2) as the light sensitive material. PhotOFETs based on…