Materials Literature
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Advancements in the numerical modelling of 3D woven composites have allowed improved understanding of the mechanical behaviour and in turn aided the design and analysis of new materials. The objectives of this paper are to utilise FEA (Finite Element Analysis) methods to determine the elastic properties of a given wov…
Atomic force microscopy (AFM) is used more and more routinely to study, at the nanometre scale, the slip traces produced on the surface of deformed crystalline materials.Taking full advantage of the quantitative height data of the slip traces, which can be extracted from these observations, requires however an adequat…
Corrosion and wear resistance of Cathodic Arc Evaporation (CAE) CrN coatings deposited on a tool steel were investigated considering the effect of the number of layers (mono or double) and the influence of defects. The CrN coatings were characterized for mechanical (scratch, nanoindentation test), corrosion behavior (…
Roughness in EUV masks can be induced at the substrate or during the deposition process in the multilayer, and this roughness causes speckle when the mask is used for imaging. The 13.5-nm wavelength light penetrates into the multilayer and interacts mostly with the roughness that is replicated through the multilayer.…
Abstract Temperature dependence of sheet electron density (ns) and mobility (µ) of the two dimensional electron gas has been investigated in AlGaN/GaN hetero‐ structures deposited with different metal stacks such as Ti/Al, Ti/Au, V/Au, and Ni/Au. It was found that a sudden increase in nsand a hump in µ were observed w…
Prestressing steels, obtained by cold drawing, are highly susceptible to hydrogen embrittlement (HE) phenomena. Stress and strain fields produced by cold drawing play an essential role in this process since they affect hydrogen diffusion. Therefore, variations of such fields due to changes in drawing conditions could…
AFM-based roughness measurement reveals the topography of EUV masks, but is only sensitive to the top surface [1]. Scatterometry provides a more accurate approach to characterize the effective phase roughness of the multilayer, and it becomes important to determine the valid metrology for roughness characterization. I…
An efficient hybrid modal-molecular dynamics method is developed for the vibration analysis of large scale nanostructures. Using the reduced order method, presented in this paper, linear and nonlinear vibrations of a suspended graphene nanoribbon (GNR) carrying an electric current in a harmonic magnetic field are inve…
In this work, a parametric numerical investigation on the plastic zone size and shape at the crack front of a through crack in a plate is presented. The thickness of the plate, the size of the crack and the applied remote load values are considered as parameters. The obtained results allow assessing the limits of the…
The present paper considers prospects for application of various nanoparticles in biology and medicine. Here are presented data on preparation of gold and silver nanoparticles, and effects of shape of these nanoparticles on their optical properties. Application of these nanoparticles in diagnostics, for drug delivery…
Author: Friedemann, S. et al.; Genre: Journal Article; Issued: 2013-09-23; Title: Comment on "Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2''
We propose a theoretical model for anisotropic multiferroics, which are one-dimensional charge transfer magnets. By means of Green's function theory, ferroelectric and magnetic properties are studied. It is found that the anisotropy not only plays an important role on the ferroelectric phase transition but also enhanc…
Abstract We demonstrate the current on‐off operation in a novel dual‐gated transistor with a He ion irradiated graphene channel in which defect‐induced transport gap is formed. The transistor operation was performed by controlling the band configuration of gate‐controlled p‐i‐n junction by independent biasing of top g…
Magnetische Nanopartikel (MNPs), die mit einem Magnetfeld ausgerichtet werden können, werden genutzt, um großflächige Anordnungen aus biologischen Nanofasern zu erzeugen, deren Orientierung durch das angelegte Magnetfeld vorgegeben ist. Wenn diese Nanofasern mit MNPs bedeckt sind, können sie durch das externe Magnetfe…
Modern highly complex proteins evolved from much simpler and less specialized subunits. The same concept can be applied in protein engineering to construct new well-folded proteins. Hybrid proteins or chimaeras can be built from contemporary protein fragments through illegitimate recombination. Even parts from differe…
Intrigued by the not fully extended hairpin monomeric structure of the previously reported cyclo -(αβ 3 αβ 2 α) 2 peptide 2, as well as its nanochannel crystallographic assembly, we here investigate the structural properties of a series of turn derivatives ( 3 – 17 ). Five crystallographic monomeric structures of the…
The H355A, H355K, H80A, and H80K mutant enzymes of the argE-encoded N-acetyl-L-ornithine deacetylase (ArgE) from Escherichia coli were prepared, however, only the H355A enzyme was found to be soluble. Kinetic analysis of the Co(II)-loaded H355A exhibited activity levels that were 380-fold less than Co(II)-loaded WT Ar…
Two new lanthanide amidate complexes, {Gd2[Cy(NCO)iPr]6} (1) and {La2[Cy(NCO)iPr]6[Cy(HNCO)iPr]} (2) (iPr = isopropyl, Cy = cyclohexyl), have been synthesized in good yields by silylamine elimination reaction between Gd[N(SiMe3)2]3 or La[N(SiMe3)2]3 and N-(cyclohexyl)isopropyl amide. Complexes 1 and 2 have been charac…
To meet the requirement of microelectronic industry, ceramic/polymer composite films made of CaCu3Ti4O12 (CCTO) powder as filler and PVDF copolymer as matrix were prepared by solution casting method. The dielectric properties (DP) and morphology of the films were studied by impedance analyzer and scanning electron mic…
Ultra-high performance concrete (UHPC) usually contains a very high proportion of ordinary Portland cement which requires a high amount of energy for its production. The present investigations aimed at systematically developing UHPC produced with supplementary cementitious materials to achieving strengths above 150 MP…