Materials Literature
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Polycaprolactone (PCL) is an important polymer due to its mechanical properties, miscibility with a large range of other polymers and biodegradability. Two main pathways to produce polycaprolactone have been described in the literature: the polycondensation of a hydroxycarboxylic acid: 6-hydroxyhexanoic acid, and the…
Thermoelectrics have long been recognized as a potentially transformative energy conversion technology due to their ability to convert heat directly into electricity. Despite this potential, thermoelectric devices are not in common use because of their low efficiency, and today they are only used in niche markets wher…
This critical review provides an overall survey of the basic concepts and up-to-date literature results concerning the very promising use of gold nanoparticles (AuNPs) for medicinal applications. It includes AuNP synthesis, assembly and conjugation with biological and biocompatible ligands, plasmon-based labeling and…
Lanthanide ions exhibit unique luminescent properties, including the ability to convert near infrared long-wavelength excitation radiation into shorter visible wavelengths through a process known as photon upconversion. In recent years lanthanide-doped upconversion nanocrystals have been developed as a new class of lu…
It is textbook knowledge that chromophore aggregation generally quenches light emission. In this feature article, we give an account on how we observed an opposite phenomenon termed aggregation-induced emission (AIE) and identified the restriction of intramolecular rotation as a main cause for the AIE effect. Based on…
This tutorial review provides a brief summary of recent research progress on carbon-based electrode materials for supercapacitors, as well as the importance of electrolytes in the development of supercapacitor technology. The basic principles of supercapacitors, the characteristics and performances of various nanostru…
Spark plasma sintering (SPS) of AlN ceramics were carried out with Y₂O₃ as sintering additive at a sintering temperature 1,550~1,700℃. The effect of Y₂O₃ addition on sintering behavior and thermal conductivity of AlN ceramics was studied. Y₂O₃ added AlN showed higher densification rate than pure AlN noticeably, but th…
Abstract: A constitutive materials model, which includes Ohno–Wang's kinematic hardening rule, is employed to simulate the isothermal monotonic and cyclic behaviours of high‐pressure die cast magnesium AM60B alloy under uniaxial loading condition. An implicit constitutive stress integration scheme developed by Kobayas…
LaGaO₃ thin film was prepared on Ni-Fe metal porous substrate by Pulsed Laser Deposition method. By the thermal reduction, the dense NiO-Fe₃O₄ substrate is changed to a porous Ni-Fe metal substrate. The volumetric shrinkage and porosity of the substrate are controlled by the reduction temperature. It was found that a…
Novel fluorinated polyurethanes (FPU) with fluorine-containing pendent groups were synthesized from fluorinated polyether glycol (PTMG-g-HFP), 1, 6-hexamethylene diisocyanate (HDI) or toluene diisocyanate (TDI) and 1, 4-butanodiol (BDO). The structure of the fluorinated polyurethanes was confirmed by the use of Fourie…
Abstract In this work, a capacitive sensor based on Anodic Aluminium Oxide (AAO) porous structures has been developed. In some cases, the pores have been also conformally coated with a high chemical pure SiO 2 by means of Atomic Layer Deposition (ALD). Temperature measurements have been done in DI water obtaining a re…
Polyimide (PI) containing pendant hydroxyl functional groups have been employed for preparation of PI-silica hybrids through the sol-gel process. A stoichiometric amount of pyromellitic dianhydride (PMDA) was reacted with a mixture of oxydianiline (ODA) and 3,3′-diamino-4,4′-dihydroxybiphenyl (DAHP) in dimethylacetami…
Pseudo-1–3 magnetostrictive composites consisting of stabilizer (B, Co)-free, light rare earth (Pr)-containing magnetostrictive (Tb 0.3 Dy 0.7 ) 1− x Pr x Fe 1.55 (0 ⩽ x ⩽ 0.4) particles with a size distribution of 10–300 µm embedded and aligned in a passive epoxy matrix using 0.5 volume fraction are fabricated. The q…
As an attempt to search for bioactive natural products exerting anti-inflammatory activity, we evaluated the effects of the methanol extract of Polytrichum commune Hedw (PCM) (Polytrichaceae) on lipopolysaccharide (LPS)-induced nitric oxide (NO), prostaglandin <TEX>$E_2$</TEX> (<TEX>$PGE_2$</TEX>) and pro-inflammatory…
Multi‐walled carbon nanotubes (MWCNTs) were tested in a styrene‐butadiene copolymer (E‐SBR)‐based rubber compound as partial replacement of N375 carbon black at 5 and 10 phr level. The composite studied was characterized by a high content of plasticizing oil. It is shown by the increase of the apparent shape factor of…
Abstract Aus alt mach neu : Calixpyrrole sind bekannte Anionenbinder und können nur schwer in Übergangsmetallkomplexe überführt werden. Die vollständige Hydrierung eines Calixpyrrols ergab nun einen Liganden, der leicht klassische Kupfer‐, Nickel‐ und Palladiumkomplexe bilden kann. Die Metallkomplexe enthalten ein Net…
In this study, we use molecular simulations based on the AIREBO potential function to find new results on the effective Young's modulus of single‐walled carbon nanotubes. For large tensile loadings, this effective Young's modulus is found to decrease significantly down to only 45% of its initial value, with a decrease…
Experiments were conducted using SUS430 and Crofer 22 APU steels coated by LSM using plasma spray and slurry spray methods, respectively. High-temperature conductivity and oxidation resistance were investigated. For comparison, SUS430 and Crofer 22 APU without LSM coating were also investigated and coefficient of ther…
Abstract: The specific behaviour of shape memory alloys (SMA) is due to a martensitic transformation [Shape Memory Materials. Cambridge University press, Cambridge] . This transformation consists mainly in a shear without volume change and is activated either by stress or temperature. The superelastic behaviour and th…
Many efforts have been devoted to exploring novel luminescent materials that not contain expensive or toxic elements, or do not need a mercury vapor plasma source. In this paper, BPO 4 and Li + -doped BPO 4 powder samples were prepared by the Pechini-type sol−gel (PSG) process. The structure and optical properties of…