Materials Literature
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Abstract The failure behavior and its mechanism of time‐temperature superposition (TTS) poly(vinyl chloride) (PVC)/dioctylphthalate (DOP) (100/70) system were studied from low to high temperatures with a step of 10°C. Arrhenius equation, WLF equation, mathematical nonlinear fitting, and manual shift were applied for T…
Abstract This commentary addresses the problem of determining surface roughness values and their use to assess the wetting behavior of surfaces. For very rough surfaces it is shown that depending on the observation scale by atomic force microscopy (AFM) quite different RMS roughness values can be obtained and that onl…
Objective molecular dynamics simulations coupled with a density functional-based tight-binding model indicated that a stress-free single-walled ($14,6$) MoS${}_{2}$ nanotube exhibits a torsional deformation of 0.87 deg/nm. Simulated electron diffraction patterns and atomic-resolution annular dark field scanning transm…
Surface enhanced Raman scattering (SERS) “hot spots” are the regions where the electromagnetic field is significantly enhanced, resulting in much greater SERS activity than other areas. Therefore, the engineering and characterization of “hot spots” have attracted much attention. Herein, we have synthesized nanoworms f…
As aluminum film thickness and feature size fall into nanoscale, drastic and abrupt changes in optical and electric material properties occur. Reduction of Al thickness beyond a critical thickness results in island formation and local nanostructure variation. Sputter-deposited Al thin films on Si wafers were studied a…
Alignment layers for bulk liquid crystalline phases can be created with monolayers formed by Langmuir-Schaefer techniques. Monolayer stability is a function of the propensity of the component molecule to effectively pack at a water interface; this propensity is enhanced when the molecule has an appropriate balance of…
Heat conduction properties are investigated in a molecular junction modeled as a two-strand ladder with strongly asymmetric thermal transport pathways. By confining anharmonic contributions to only one of the strands, it is shown that tuning of the interstrand coupling can lead to normal heat transport and to the emer…
Long- and short-side chain perfluorosulfonic acid polymers have been electrospun into nonwoven nanofibre membranes. The membranes show homogeneous nanofibrous morphology, with the short-side chain showing narrower fibre size distribution and thinner fibre dimension due to lower threshold concentration of carrier polym…
A one dimensional dynamic model of a reciprocating active reciprocating magnetic regenerator (AMR) was developed and a parametric analysis of its behavior at near room temperature conditions was carried out. The investigation is focused on the thermal behavior of the regenerator alone, regardless of the apparatus in w…
PURPOSE: This study evaluated the resistance to corrosion in welds made with Tungsten Inert Gas (TIG) in specimens made of commercially pure titanium (cp Ti) in comparison with laser welds. MATERIALS AND METHODS: A total of 15 circular specimens (10-mm diameter, 2-mm thick) were fabricated and divided into two groups:…
Abstract Polyester and nylon are the mostly used reinforcing textile fibers in many industrial rubber applications. Now‐a‐days body ply of a passenger car radial is mostly made up of polyester fiber. Because of its thermoplastic nature, it undergoes some kind of thermal shrinkage during processing and vulcanization, w…
An approach to synthesize bulk nanostructured titanium boride ( TiB ) ceramic material having a whisker‐like microstructure with a very attractive combination of mechanical properties is presented. The material is made of a three‐dimensional network of high aspect ratio TiB whiskers that are created in situ during rea…
Pulsed femtosecond laser irradiation at low repetition rate, without any annealing, has been used to localize the growth of PbS nanoparticles, for the first time, inside a transparent porous silica matrix prepared by a sol-gel route. Before the irradiation, the porous silica host has been soaked within a solution cont…
In this study, both cleaning performance and pattern damage events were evaluated for specific gases (H2, N2, O2 and Ar) dissolved deionized water (g-DIW) with megasonic (MS). The particle removal ability of all g-DIW with MS was gradually increased with their gasification level risen up. The evaluation of pattern dam…
In this paper, controlled potential bulk electrolysis at a glassy carbon working electrode was conveniently employed to produce the reduced forms of H 4 [α-SiW 12 O 40 ] with little or no supporting electrolyte. Consequently, without the need for separation and purification, these reduced forms of [α-SiW 12 O 40 ] 4–…
Reaction mechanisms underlying the atomic layer deposition (ALD) of ternary oxide films are investigated via the dependence of film stoichiometry on the sequence of ALD pulses. Data on film composition are brought together from experiments on five ternary oxide systems containing La, Mn, Ca, Fe, Sr, or Co, all using b…
Hierarchical carbon nanostructures based on ultra-long carbon nanofibers (CNF) decorated with carbon nanotubes (CNT) have been prepared using plasma processes. The nickel/carbon composite nanofibers, used as a support for the growth of CNT, were deposited on nanopatterned silicon substrate by a hybrid plasma process,…
Breaking and entering: A figure-of-eight dinickel(II) complex and skeletal rearrangement products including a pyrrole-ring-cleaved product, a directly meso-β-linked diporphyrin (see scheme), and a dearylative oxygenation product have been formed in moderate yields by a nickel(II) metalation of [36]octaphyrin(1.1.1.1.1…
The initial stages of germanium (Ge) adsorption and heteroepitaxial growth on the SrTiO 3 (001) surface have been investigated with first-principles calculations. Our results reveal that the 2 × 1 DL TiO 2 reconstruction plays a major role in the Ge chemisorption. This surface reconstruction involves a charge transfer…
Graphene-on-silicon field-effect transistors (GOSFETs) are studied as a candidate of next generation transistors. Graphene is formed on SiC layers grown on Si substrates. As well as the channel material, the gate stack is also a key component of FETs. In this study, SiCN deposited by plasma-enhanced chemical vapor dep…