Materials Literature
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Diffusion coefficients of sodium and potassium ions in molten glasses with the composition (25 − x )Na 2 O · x K 2 O · 75SiO 2 have been determined by the sectioning method with measurement of the residual activity 22 Na and 42 K isotopes. Diffusion of sodium and 133 Ba ions has been studied in melts of the (30 − x )N…
The current investigation proposes a novel method for simultaneous assessment of the electrochemical and structural fatigue properties of nickel-titanium shape memory alloy (NiTi SMA) wires. The design and layout of an in situ electrochemical cell in a custom-made bending rotation fatigue (BRF) test rig is presented.…
Commercial ultrafiltration membranes were modified using different polymeric nanofibers in order to gain additional water treatment functionality. Membrane surfaces were given biocidal properties by adding electrospun nanofiber structures containing various forms of silver. Changes in viscosity and homogeneity of the…
The requirements for metrology of magnetostriction in complex multilayers and on whole wafers present challenges. An elegant technique based on radius of curvature deformation of whole wafers in a commercial metrology tool is described. The method is based on the Villari effect through application of strain to a film…
Under insonation contrast agents are known to perform nonlinear pulsations and deform statically, in the form of buckling, or dynamically via parametric mode excitation, and often exhibit jetting and break-up like bubbles without coating. Boundary element simulations are performed in the context of axisymmetry in orde…
Carbon nanotube (CNT) based polymeric composites exhibit high strength and thermal conductivity and can be electrically conductive at a low percolation threshold. CNT nanocomposites with polystyrene (PS) thermoplastic matrix were injection-molded and high shear stress in the flow direction enabled partial alignment of…
Polyvinylcarbazole (PVK) composites containing graphene in an amount of somewhat less than 0.15 wt % exhibit third-order dielectric susceptibility due to the presence of graphene, as well as photoelectric and photorefractive sensitivity at 1064 nm. The photorefractive (PR) effect is known to occur in a polymer composi…
The preparation of the superhydrophobic surface on aluminum alloy by anodizing and polypropylene (PP) coating was reported. Both the different anodizing process and different PP coatings of aluminum alloy were investigated. The effects of different anodizing conditions, such as electrolyte concentration, anodization t…
In this paper, we demonstrate that signal lines in SRAM arrays are prone to electromigration (EM). Our analysis shows that the read operation can cause unidirectional current flow in bit-lines. Thus the length of bit-lines should be bounded not only by performance requirements, but also by the Blech length constraint…
Manganese tetroxide (Mn 3 O 4 ) nanofibers were prepared by electrospinning homogeneous viscous solution of 20 wt%, 28 wt% and 36 wt% manganese acetate in poly vinyl alcohol (PVA) and calcining the nanofibers at 1000 °C for 2 h. Electrospinning was carried out at 9 kV DC with tip to collector distance (TCD) of 7 cm. T…
In this letter, we proposed and experimentally demonstrated a method to detect the vector magnetic field with a single nitrogen vacancy (NV) center in diamond. The magnetic field in parallel with the axis of the NV center can be obtained by detecting the electron Zeeman shift, while the Larmor precession of an ancilla…
Semiconductor quantum dots (QDs) have achieved initial success as biomedical imaging agents. However, significant cytotoxicity in the biological environment prohibits their use in vivo. Here, we introduce nanocomposites composed of carbon dots (C-dots) in poly(lactic-co-glycolic acid) (PLGA) carriers as possible imagi…
A new lead free (1−x) Bi0.5K0.5TiO3–(x) K0.5Na0.5NbO3 (BKT-KNN) system (0.0 ≤ x ≤ 0.15) with density of 94-97% is reported. Tetragonal structure of BKT-KNN is apparent for 0 ≤ x ≤ 0.06 with 1.02 ≤ (c/a) ≤ 1.012. Compositions with x ≥ 0.15 show orthorhombic structure (like KNN) and x = 0.08 & x = 0.10 are pseudocub…
We have synthesized silver nanoparticles using the leaf extract of Henna (Lawsonia inermis). The synthesized silver nanoparticles were characterized using UV – visible spectroscopy, Atomic Force Microscopy and FTIR. Effect of leaf extract concentration, pH and reaction temperature on the formation of silver nanopartic…
Abstract Molecular dynamics simulations have been performed on seven aromatic polyamides to understand the structure‐property relationships on their densities. The aromatic polyamides studied in this work are based on poly(hexafluoroisopropylidene) isophthalamide, HFAISO. The aim of this research is to investigate the…
Nanotechnology and its characterization can be overwhelming when viewed through its multitude of applications. Product designers are bringing new high-value nanotechnology products to market that address many different nanoapplications. These nanoapplications span most science and engineering disciplines, thus creatin…
Modern synchrotron-based X-ray fluorescence microscopy (XFM) has become a critical tool for many a research program, addressing extremely broad and highly relevant scientific questions. Their ability to map trace elemental content and probe local chemical state has been applied to numerous scientific areas in the life…
Polymethyl methacrylate (PMMA) nanofiber membrane (NFM) was synthesized by an electrospinning technique. These membranes were utilized as a support for immobilization of xylanase enzyme to study its pH stability, thermal stability, and reusability. The morphology of aligned NFM was studied by optical microscopy and sc…
Based on using combustion synthesis in high-gravity field to prepare the solidified TiC-TiB 2 composites, the layered composites of the ceramic to Ti-6Al-4V at graded composition were achieved by fusion joint and atomic inter-diffusion between liquid TiC-TiB 2 and Ti-6Al-4V substrate. The mechanical properties showed…
La microscopie électronique à balayage est un outil puissant d'observation des surfaces. Les images de MEB peuvent être facilement associées à des microanalyses et cartographies élémentaires obtenues par spectrométrie des rayons X. Elles se prêtent facilement à la numérisation et au traitement des images. Cet article…