Materials Literature
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Poly(vinylidene fluoride) (PVDF) forming β-phase polymorphic modification shows strong ferro- and piezoelectric property as a crucial electroactive polymer and can be obtained by subjecting the highly oriented PVDF fibers to strong electric fields. Two different nanofibrillar materials: PVDF nanofibrillar single polym…
Purpose The purpose of this paper is to provide a systematic method to perform long‐term reliability assessment of gold (Au) and copper (Cu) ball bonds in fineline ball grid array package. Also with the aim to study the apparent activation energies (Eaa) and its associated wearout mechanisms of both Au and Cu wire in…
To properly investigate the environmental transport, fate, and impact of fullerene C60 nanoparticles (nC60), it is necessary to reproducibly obtain nC60 suspensions and to accurately determine their concentration ([C60]). The results in the present study, however, clearly illustrate that the production of nC60 via ext…
This paper discusses the thermal behavior of a high-pressure mercury lamp in a horizontal position compared to that of a vertical lamp when the supply current varies. The model adopted is 3-D, steady, and dc powered. After the validation of the model, pressure of the lamp is kept at 6 × 105Pa and the supply current va…
PURPOSE: To show the presence and direction of the collagen fiber orientation around platform-switched (PS) and non-platform switched (NPS) implants at the crestal bone level. MATERIALS AND METHODS: Twelve implants (six PS and six NPS implants) were placed with single-stage surgery in three dogs. The implant abutments…
Au-core, Au3Cu-alloyed shell nanoparticles passivated with CuS2 were fabricated by the polyol method, and characterized by Cs-corrected scanning transmission electron microscopy. The analysis of the high-resolution micrographs reveals that these nanoparticles have decahedral structure with shell periodicity, and that…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation H. Janeschitz-Kriegl; Some remarks on flow induced crystallization in polymer melts. J. Rheol. 1…
We examine carefully the accuracy of stochastic rotational dynamics (SRD) simulations for isolated polymer chains in a solvent, where SRD incorporates hydrodynamic interaction (HI) through momentum exchange (collisions) between polymer beads and solvent beads, both of which are assigned mass. We show that the main err…
PURPOSE: A number of environmental and patient-related factors contribute to implant failure. A significant fraction of these failures can be attributed to limited osseointegration resulting from poor bone healing responses. The overall goal of this study was to determine whether surface treatment of a titanium-alumin…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Helmut Münstedt, Zdeněk Starý; Steady states in extensional flow of strain hardening polymer melt…
ABSTRACT A novel superabsorbent polymer composite was successfully synthesized from waste material cultured Auricularia auricula (WMCAA) and poly (acrylic acid‐co‐acrylamide) (P(AA‐co‐AM)) using microwave irradiation. Optimal synthesis conditions were determined by investigating the water absorbency of the superabsorb…
Sulfur and copper codoped TiO2 (S, Cu‐TiO2) were prepared by sol‐gel process. And the samples were characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), UV‐vis diffuse reflectance spectroscopy (DRS), and N2 adsorption (BET method). The XRD results…
An unusual wurtzite phase of Cu2ZnGeSe4 (CZGSe) has been discovered and its corresponding nanocrystals (NCs) were synthesized by using a facile hot-injection solution-phase synthesis method. Moreover, the formation mechanism of this new phase of CZGSe, instead of the typically observed stannite structure, has been inv…
A selective solvent vapor, i.e., cyclohexanone or isopropyl benzene, which is a poor solvent for poly(3-hexylthiophene-2,5-diyl) (P3HT) and a good solvent for fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), was employed to reduce the size of PCBM aggregates and prolong the formation time of big…
Raman microscopy/spectroscopy measurements are presented on high purity niobium (Nb) samples, including pieces from hot spot regions of a tested superconducting rf cavity that exhibit a high density of etch pits. Measured spectra are compared with density functional theory calculations of Raman-active, vibrational mod…
The bacterial cell wall ensures the structural integrity of the cell and is the main determinant of cell shape. In Bacillus subtilis, three cytoskeletal proteins, MreB, MreBH and Mbl, are thought to play a crucial role in maintaining the rod cell shape. These proteins are thought to be linked with the transmembrane pr…
An adequate description of the results of experimental measurement of both diagonal and off-diagonal Giant magneto-impedance (GMI) components has been obtained for Co-rich amorphous microwire at moderate frequencies assuming the existence of a small off-diagonal tensor component of the residual quenching stress. The l…
In the present work, Ni–Al 2 O 3 , Ni–SiC and novel Ni–Al 2 O 3 –SiC metal matrix composite (MMC) coatings were electrodeposited onto pure copper samples using a modified Watt’s nickel electroplating bath containing nano alumina and silicon carbide particles with an average particle size of 50 nm. The composition, cry…
A novel nanocomposite scaffold based on poly(vinyl alcohol) (PVA) and multiwalled carbon nanotubes (MWNT) were synthesized and characterized regarding to morphological, physical, and mechanical properties and also the preliminary biocompatibility was assessed by MTT assay. Additionally, the concept of developing hybri…
The aim of this study was to optimise a pulse sequence for high-resolution imaging sensitive to the effects of conventional macromolecular magnetisation transfer (MT(m)) and nuclear Overhauser enhancement (NOE), and to use it to investigate variations in these parameters across the cerebral cortex. A high-spatial-reso…