Materials Literature
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The Protein Residue Distance & Angle Distribution Database for Secondary Structures (PRDDs) is a dedicated database and structural bioinformatics system for protein analysis and modeling. The database is developed to host and analyze the statistical data for protein residue level distances and angles (called virtual b…
Thermal debinding of injection moulded SiC parts is usually performed in an inert atmosphere or vacuum, which increases the production cycle and costs. The present study examines the thermal debinding of SiC green parts in air atmosphere. No obvious defects were found for debound parts under 500°C. Binders were easier…
The theoretical torsional buckling analysis of multiwalled carbon nanotubes (MWCNTs) under thermoelectromechanical loadings has been studied, which is of great significance to the application of carbon nanotubes in the electrical and thermal condition. Based on the Donnell shell theory, the theoretical governing equat…
Thermal gravimetric analysis (TG), differential thermal analysis (DTA), and in-situ Fourier Transform Infra-Red spectrometer (FTIR) experiments were used to investigate the thermal decomposition characteristics of PET binder. The results of TG-DTA show that PET binder takes place only one step weight loss at a heating…
The combination of magnetic properties with dielectric, semiconducting, or ferroelectric materials in one and the same material [e.g. magnetic semiconductors (MS) or intrinsic multiferroics] – as well as in artificial heterostructures [e.g. ferromagnetic/dielectric heterostructures for magnetic tunnel junctions (MTJs)…
We prove that among all triangles of given diameter, the equilateral triangle minimizes the sum of the first $n$ eigenvalues of the Neumann Laplacian, when $n \geq 3$. The result fails for $n=2$, because the second eigenvalue is known to be minimal for the degenerate acute isosceles triangle (rather than for the equil…
A series of a-C:H films have been prepared by plasma-based ion implantation (PBII) with acetylene on AISI 321 substrates. The effect of negative bias pulse on the characteristics of these films was investigated. The structures of the films were analyzed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy.…
An assignment of the out-of-plane vibrations of the trans -buta-1,3-diene molecule was performed by analysis of the isotopic shifts of wavenumbers in the methylene moieties =CHX, where X = H, D or T. A suggestion for the mutual reassignment of the wavenumbers belonging to the twisting vibration of the methylene moiety…
The composite magnetic nanoparticles of coated SiO nano film with about 8 nm size can be dispersed in various liquid media, widely known as magnetic fluids or ferrofluids with both magnetic and liquid properties. In this paper, a bio-medicine coating technology on surface of magnetic nanoparticles and the optimum fabr…
A thermodynamic model of the electric phase transitions of the first- and second-order, like a model of magnetic phase transitions for nanostructures, e.g., for metallic nanostructured europium, is considered. It was shown that, for structures possessing first-order electric phase transitions, the formation of nanostr…
The ideal parameters of steel Cr12mov was found under the effect of impulse electric field. Through the corresponding experiments of the new technology, the better ball body of the steel Cr12mov organization had been obtained, while the steel Cr12mov annealing temperature had been reduced, the holding time shortened,…
This article outlines the nature and activities of the recently completed EU Framework Programme 6 Integrated Project, Novel and Improved Nanomaterials, Chemistries and Apparatus for Nanobiotechnology (NACBO). This project was designed to yield new nanomaterials, surface activation and synthetic nucleic acid chemistri…
The image on the front cover refers to the article by Labunov et al. (pp. 453–458). It shows an SEM image (background) and a scheme of the proposed growth mechanism of new composite nanostructures composed of two allotropic forms of carbon: the arrays of vertically aligned carbon nanotubes (CNTs) and planar graphite l…
Libbrecht and Libbrecht recently described a thermoelectric temperature controller for which they claimed an absolute accuracy of 100 mK. They did not specify the heat-dissipation coefficient for their thermistor temperature sensor-which would dissipate more power than is usual in such circuits- nor make any allowance…
In the advent of GaN photonic devices, there is renewed interest in looking at the growth of nanostructures of III-Nitrides that can yield novel properties. To grow a high density of self-assembled GaN nanostructures on a large scale, there is a need to use templates with well-defined nanometer scale features. The Si…
The director in nematic liquid crystal cell with a weak anchoring grating substrate and a strong anchoring planar substrate is relative to the coordinates x and z. The influence of the surface geometry of the grating substrate in the cell on the director profile is numerically simulated using the two-dimensional finit…
The crystallization properties of as-deposited and laser written amorphous marks of doped Sb2Te phase change material are found to be only dependent on the top dielectric layer. A ZnS:SiO2 top dielectric layer yields a higher crystallization temperature and a larger crystal growth activation energy as compared to a Si…
The use of a corrected least-squares procedure that takes the error of impact-strength estimation into account, as well as several structure parameters, such as the equiaxial grain size number, Widmanstätten ferrite grain size number, and bainite percentage, allowed us to substantially improve the constraint equations…
The molecular dynamics of the spin probes of different structures in complexes with cyclodextrins (CDs) which were covalently attached to silica-gel microparticles has been studied by electron paramagnetic resonance (EPR). Two states of the bound spin probes have been found which differ appreciably in rotational mobil…
Ti and Ti-based alloys are preferred materials in the production of implants in both medical and dental applications. One of the methods that allow the change of biological properties of Ti alloys is the modification of their chemical composition and microstructure. In this study, new biocompatible, nanostructured Ti-…