Materials Literature
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The nearest-neighbor coordination and electronic structure in C:Ni(∼30 at.%) nanocomposite films grown by ion beam cosputtering in the temperature range of room temperatue (RT) to 500 °C are investigated by the means of extended X-ray absorption fine structure (EXAFS), X-ray absorption near-edge spectroscopy (XANES) a…
A lateral top-heater phase-change memory (LTH-PCM) is proposed and investigated for multilevel storage (MLS). The active layers are composed of a 50-nm-thick TiN layer as a top heater and a 150-nm-thick SbTeN layer. A number of intermediate levels, which are induced by electric currents, are exhibited in experimental…
Abstract The self‐assembly features of a family of tetrapeptides with a silk‐inspired structure are presented. An exhaustive study of the influence of the terminal alkyl chain length in this process is undertaken. Scanning electron microscopy (SEM), wide‐angle X‐ray diffraction (WAXD), FTIR spectroscopy, and circular…
Nanocrystalline face-centred-cubic (FCC) materials show unique mechanical properties. In this regard, an interesting but controversial discovery is that nanocrystalline FCC materials with high stacking-fault energy (SFE), such as aluminum (Al), exhibit a novel mechanism of deformation. In particular, both molecular dy…
The Kolmogorov-Johnson-Mehl-Avrami (KJMA) theory fails to treat nonrandom nucleation and overgrowth processes. However, the very tractability of their solution in describing experimental data caused researchers to slightly modify KJMA's differential equation so as to extend the applicability of the model. In doing thi…
We report here experimental evidence for the formation in the solid state of a new binuclear Fe (III) 2(mu-OMe) 2(HL) 4 complex (H 2L is 2-salicyloylhydrazono-1,3-dithiolane). The isostructural Mn (III) 2(mu-OMe) 2(HL) 4 complex has provided the strongest ferromagnetic interaction value (J approximately 20 cm (-1)) be…
Bulky 2,6-disubstituted aryl esters of phosphoric acid, 2,6-dimethylphenyl phosphate (dmppH 2), and 2,6-diisopropylphenyl phosphate (dippH 2) react differently with Cp*TiCl 3 (Cp* = C 5Me 5) under identical reaction conditions. While dippH 2 and Cp*TiCl 3 react in THF at 25 degrees C to yield air-stable trinuclear tit…
This paper presents a system that allows the measurement of parameters of needle penetration during high-speed sewing. The system has been developed as a tool for analysis of the most important mechanical effects occurring during high-speed sewing. It allows the measurement of several sewing process variables, namely…
Laponite films provide versatile inorganic scaffolds with materials architectures that direct the self-assembly of CdSe quantum dots (QDs or EviTags) and catalytic surfaces that promote the in situ polymerization of polyaniline (PANI) to yield novel nanocomposites for light emitting diodes (LEDs) and solar cell applic…
Poly(acrylic acid) polyelectrolyte brushes were synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP) of tert-butyl acrylate on planar gold surfaces and subsequent hydrolysis. Three types of monolayers with different numbers of thiol binding sites per initiating unit were used. The binding st…
We review the application of cantilever-based stress measurements in surface science and magnetism. The application of thin (thickness appr. 0.1 mm) single crystalline substrates as cantilevers has been used successfully to measure adsorbate-induced surface stress changes, lattice misfit induced film stress, and magne…
Abstract The results of the investigations on the auto‐thermal combustion of lean gaseous fuels in a recuperative annular double‐layer catalytic converter were reported in the current contribution. Several modifications were proposed to improve the stationary and transient behaviour of the converters. The miniaturized…
This work focuses on the crystal symmetry of morphotropic ${\text{PbZr}}_{x}{\text{Ti}}_{1\ensuremath{-}x}{\text{O}}_{3}$ (PZT). The crystal symmetry is investigated within single domains of $\ensuremath{\approx}30--100\text{ }\text{nm}$ width by convergent beam electron diffraction (CBED). The composition ${\text{PbZ…
Over upcoming electronics technology nodes, shrinking feature sizes of on-chip interconnects and correspondingly higher current densities are expected to result in higher temperatures due to self-heating. This study describes a finite element based compact thermal modeling approach to investigate the effects of Joule…
A series of polypseudorotaxanes were synthesized from α-cyclodextrin (α-CD) and poly[( R,S )-3-hydroxybutyrate]−poly(ethylene glycol)−poly[( R,S )-3-hydroxybutyrate] (PHB−PEG−PHB) triblock copolymers with flanking PHB blocks of different lengths and the middle PEG block of M n 3000 Da. Formation of inclusion complexes…
We report the self-assembly of microbelts from Cu-doped boron nitride nanotubes by chemical vapor deposition using Cu as a catalyst. The BN nanotubes with Cu-encapsulated flat tips have uniform outer diameters of approximately 240 nm, inner diameters of approximately 210 nm, and lengths of approximately 10 microm, and…
The dinuclear gold complexes [{Au(PPh 3)} 2(mu- dmid)] ( 1) ( dmid = 1,3-dithiole-2-one-4,5-dithiolate) and [{Au(PPh 3)} 2(mu- dddt)] ( 2) ( dddt = 5,6-dihydro-1,4-dithiine-2,3-dithiolate) were synthesized and characterized by X-ray crystallography. Both complexes exhibit intramolecular aurophilic interactions with Au…
Intrinsic coherent anti-Stokes emission is observed in lithographically patterned gold nanowires. Polarization dependent measurements reveal that the nanostructure's anti-Stokes response is polarized in the direction of the transverse surface plasmon resonance of the wire. We have used specially fabricated gold nanozi…
Mixed metal oxide (MMO) films containing Ni 2+ and Al 3+ have been fabricated by a simple process involving calcination of layered double hydroxide (LDH) film precursors at 300−600 °C for 4 h in air. Scanning electron microscopy (SEM) reveals that the resulting Ni/Al−O thin films maintain the original nestlike morphol…
Yellow single crystals of (NO 2 )[Au(NO 3 ) 4 ] (monoclinic, P 2 1 / n, Z = 2, a = 775.1(2) pm, b = 810.2(2) pm, c = 898.7(2) pm, β = 112.67(3)°, wR 2 = 0.0622) were obtained from the reaction of elemental gold with N 2 O 5 . In the crystal structure complex [Au(NO 3 ) 4 ] − ions are present with the Au 3+ ions being…