Materials Literature
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Doppelt nützlich: Ein fluoreszierender TbIII-Komplex, der an Fe3O4-Nanopartikel gekuppelt ist und einen Folsäurerest trägt (siehe Bild), ist durch Superparamagnetismus, niedrige Zytotoxizität und eine gute Aufnahme in die Zelle gekennzeichnet und kann so zur In-vitro-Fluoreszenzbildgebung und -MRI-Bildgebung bei Zelle…
Abstract In this paper a new micro‐shear experiment is introduced using a double shear specimen machined by a focused ion beam technique. The micro‐shear specimen is structured from pure copper promoting (111) [101] slip. Comparing scanning electron microscopy images before and after deformation provides evidence for…
The motion of particles through a system of permeable fibre bundles is considered. The system is discretisised with Voronoi diagrams and the dissipation rate of energy is minimised with respect to the stream function in a system with periodic boundary conditions. The flow of the particles is in the transversal directi…
Using molecular dynamics simulations, we study the wetting of liquid iron in a carbon nanotube and on a graphene sheet. It is found that the contact angle of a droplet in a carbon nanotube increases linearly with the increase of wall curvature but is independent of the length of the filled liquid. The contact angle fo…
The present work has investigated the influence of calcium on the microstructure and properties of AISI M2 high speed steels. The results show that the as-cast structure consists of the iron matrix and networks of M2C eutectic carbides, which are greatly refined in the ingot modified by calcium. Meanwhile, the morphol…
1. Michael Beehner, MD (mlbeehner{at}spa.net) 1. Saratoga Springs, New York, USA The original intention for this study was to repeat Dr. Bobby Limmer’s1992 study that looked at graft survival over a period of time after harvesting,[1][1] but, in addition, to add two more days to the study
This paper carries out first principles calculation of the structure, electronic and optical properties of Be x Zn 1− x O alloys based on the density-functional theory for the compositions x = 0.0, 0.25, 0.5, 0.75, 1.0. The lattice constants deviations of alloys obey Vegard's law well. The Be x Zn 1− x O alloys have t…
Abstract This research presents the deposition and device fabrication of epitaxial Pb ( Zr,Ti ) O 3 (PZT) thin films for applications in microelectromechanical systems (MEMS). A piezoelectric micro-membrane is described as an example. Using the pulsed laser deposition (PLD) technique and the MEMS microfabrication proc…
This study describes a multi-faceted materials selection problem that ultimately produces a new class of polymer—fiber composites with failure strains of near 400% and ultimate tensile strengths (UTS’s) up to 20 MPa. Independent control of the rubbery modulus (proportional to the compressive force the composite can ap…
We, the Editor and Publisher of the journal Supramolecular Chemistry, have retracted the following article:Sheshanath V. Bhosale, Mohan B. Kalyankar, Sidhanath V. Bhosale, Sudhakar G. Patil, Cecilia H. Lalander, Steven J. Langford & Santosh V. Nalage (2011) Supramolecular self-assembly of protoporphyrin IX amphiphiles…
The author uses a transfer-matrix technique to simulate field electron emission from a flat metal. The author compares in particular the results provided by this numerical scheme with those predicted by the standard Fowler–Nordheim equation. This comparison aims at establishing the influence of different approximation…
The nonlinear optical coefficients d33 of epoxyamine-based thin films containing 4-amino-4’-nitroazobenzene chromophore fragments in the main chain were measured by a second harmonic generation technique.
Vanadium dioxide films have been grown on silicon substrates and on SiO2 layers on silicon by a modified sol-gel process using methyl cellosolve as a solvent. We have failed to obtain vanadium dioxide layers on Pt/TiO x /SiO2/Si substrates. For all of the substrates studied, we have examined the effect of synthesis co…
Abstract Carbon nanotube (CNT) has been received much interest due to its unique structure, mechanical and electronic properties. Although activated CNT can enhance the specific capacitance, the effect is limited. Polyaniline (PANI) has good mechanical performance, environmental stability and reversible control of con…
O estudo da família Eunotiaceae em diferentes ambientes (lagoas, banhados e açude) na Planície Costeira do Rio Grande do Sul foi realizado no outono e primavera de 2003. Foram identificados 26 táxons específicos e infra-específicos, um pertencente ao gênero Actinella e 25 a Eunotia. A maior riqueza de espécies de Euno…
Abstract Catalytic effects of NiCl 2 , TiC and TiN on the dehydrogenation/rehydrogenation characteristics of LiAlH 4 were investigated by pressure‐content‐temperature (PCT), X‐ray diffraction (XRD), differential scanning calorimatory (DSC), and field emission scanning electron microscopy (FESEM). The doped samples exh…
Birefringent wave plates, often referred to as retarders, generally exhibit a strong wavelength dependence. However, there is a real need for achromatic retarders that exhibit identical characteristics over a broad wavelength range. In this paper, we have studied the design and characteristics of a cascaded system of…
Magnesium 27-aryltetrabenzo[5,10,15]triazaporphyrinates were obtained by heating of phthalodinitrile, arylacetonitrile and magnesium powder.
Abstract The present work introduces a new concept based on the analysis of the rubber–filler gel for the determination of the phase selective filler localization in ternary rubber blends. Natural rubber (NR)/styrene–butadiene rubber (SBR)/ethylene–propylene rubber (EPDM) blends filled with silica were the focus of th…
The features of nanoparticle formation by the radiation-chemical reduction of Cu 2+ ions in polyacrylic acid-polyethyleneimine complexes have been studied. It has been shown that the swollen film/aqueous alcohol medium interphase exchange of the reducing species and the specifics of X-ray energy transfer play an impor…