Materials Literature
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Abstract A sulfate-bridged tetracosanuclear manganese cluster, (Et3NH)2[{Mn8(L)4(µ4-O)2(SO4)2(H2O)3}3(SO4)] (1) (H3L = N-(2-hydroxyethyl)-2-hydroxybenzylideneimine-3-carboxylic acid) was synthesized by the reaction of a Schiff-base ligand H3L and manganese acetate in the presence of sulfuric acid. The tetracosanuclear…
Photothermal heating has been an effective mechanism for harvesting light energy by plasmonic resonance. Photothermally generated hyperthermia can alter cell behavior, change cell microenvironment, and promote or suppress cell growth. In the past, colloidal nanoparticles such as gold nanospheres, nanoshells, nanorods,…
Type I collagen is a major structural protein in mammals that shows highly structured macromolecular organizations specific to each tissue. This biopolymer is synthesized as triple helices, which self-assemble into fibrils (Ø =10-300 nm) and further form various 3D organization. In recent years, Second Harmonic Genera…
Quantum Electronics Electrons in metals are subject to thermally induced noise that can generate tiny magnetic fields. For quantum electronic applications, the noise and magnetic fields can be damaging. Kolkowitz et al. show that the spin properties of single defects in diamond can be used to probe the noise. The find…
A finite element model for piezoelectric smart beam in extension mode based on First-order Shear Deformation Theory (FSDT) with an appropriate through-thickness distribution of electric potential is presented. Accuracy of piezoelectric finite element formulations depends on the selection of assumed mechanical and elec…
Abstract. This paper presents a free and open-source model called PyXRD (short for Python X-ray diffraction) to improve the quantification of complex, poly-phasic mixed-layer phyllosilicate assemblages. The novelty of this model is the ab initio incorporation of the multi-specimen method, making it possible to share p…
Abstract In this study, four different types of poly(vinylidene fluoride) (PVDF) membranes were prepared by blending with poly(vinylidene fluoride)-graft-poly(sulfopropyl methacrylate) (PVDF-g-PSPMA) or/and potassium perchlorate (KClO4). Blending PVDF with PVDF-g-PSPMA and KClO4 allowed the membrane to have hydrophili…
Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce i na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę i kulturę techniczną.
Repellent Materials Superhydrophobic materials often depend on a particular surface patterning or an applied coating. However, these surfaces can be damaged by wear or fouled by oily materials. Lu et al. devised a suspension of coated titanium dioxide nanoparticles that can be spray-painted or dipcoated onto a range o…
The article presents bioinert and bioactive materials used for manufacturing implants and describes the main features and characteristics of these materials. A thorough overview and analysis of scientific works related to the properties of scaffolds for tissue regeneration and problem applicability are provided. Strai…
Friction between different papers, inkjet and flexographic prints has been experimentally investigated. Flexographic prints have been made using an anilox roller, and inkjet prints have been produced covering paper with one and four toner layers. Static (SCOF) and kinetic (KCOF) friction coefficients between paper and…
Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce i na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę i kulturę techniczną.
The article examines the strength of laminating plastic cards at different lamination temperatures. For investigation purposes, two types of plastic substrate and films have been used. Laminate strength has been tested (CMYK) to establish the impact of colours on the strength of laminate. The paper compares inks suppl…
The article experimentally investigates the properties of offset print friction and determines static and kinetic coefficients of friction. Conventional and UV inks have been found to increase the static friction coefficient and reduce the kinetic friction coefficient between paper and print. The roughness properti…
We present a novel microfluidic surface-enhanced Raman scattering (SERS) sensor for rapid and label-free biomolecular detection. Our sensor design mitigates a common limiting factor in microfluidic SERS sensors that utilize integrated nanostructures: low-efficiency transport of biomolecules to nanostructured surface w…
Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce i na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę i kulturę techniczną.
Wydawnictwo SIGMA-NOT wydaje czasopisma fachowe informujące swoich czytelników o najnowszych osiągnięciach naukowych i nowoczesnych rozwiązaniach technicznych w Polsce i na świecie, popularyzuje problemy techniczne oraz poszerza wiedzę i kulturę techniczną.
Abstract Unlike mechanical properties, the fracture resistance behaviour of ductile materials depends upon the state of stress existing ahead of the growing crack-tip. For ductile materials, the fracture resistance, expressed in terms of J–R curve, goes on changing with crack growth. The J–R curves are influenced by t…
The article proposes the method for evaluating angular and linear changes in intervertebral discs of the spine depending on linear and nonlinear intervertebral disc stiffness. A dynamic made of 5 solid bodies connected by damping and stiffness components and applied for 2-D 10 degrees of freedom of the lumbar spine ha…
Indirect calibration of a nanoindentation system was performed by deriving a reference loading curve. This reference load-depth relationship was accomplished by assuming a perfect nanoindentation test on an ideal reference material; if all components in a nanoindentation system are well calibrated and the reference ma…