Materials Literature
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Research into extreme water-repellent surfaces began many decades ago, although it was only relatively recently that the term superhydrophobicity appeared in literature. Here we review the work on the preparation of superhydrophobic surfaces, with focus on the different techniques used and how they have developed over…
<div class="htmlview paragraph">In order to discuss future technical issues for urea SCR (selective catalytic reduction) system, it is necessary to assess various technical possibilities that would be applied to urea SCR systems which is capable of complying with future emission level requirements, for example J…
Abstract Synthesis and Crystal Structure of Na 10 [M 3 O 6 ][MO 3 ] (M = Fe, Mn) with a Remark on the Magnetic Properties Single crystals of Na 10 [M 3 O 6 ][MO 3 ] (M = Mn, Fe) may be obtained via a redox reaction of CdO with the respective transition metal in the presence of Na 2 O and a flux as red single crystals,…
We investigate the position-selected electronic structure of laser modified carbon nanotubes (CNTs) by scanning photoelectron microscopy. After laser pruning removed the top layer of CNTs in air and N2 environment, the modified region shows enhanced chemical shifts of 0.9 and 0.6eV in carbon 1s state, respectively. Th…
A new series of poly(hydrazone–ether)s was synthesized from 3,4-dimethylthieno [2,3-b] thiophene-2, 5-dicarbohydrazide, II and 4,4′-diformyl-α, ω-diphenoxyalkanes or 4,4′-diformyl -2,2′-dimethoxy -α, ω-diphenoxyalkanes. The inherent viscosities of the polymers were in the range 0.22 – 0.56 dIg−1. Majority of the polym…
<div class="htmlview paragraph">Phosphorus is known to reduce effectiveness of the three-way catalysts (TWC) commonly used by automotive OEMs. This phenomenon is referred to as catalyst deactivation. The process occurs as zinc dialkyldithiophosphate (ZDDP) decomposes in an engine creating many phosphorus species…
Optical properties of neodymium self-activated nanocrystals grown in porous glass have been investigated. Mechanisms responsible for the opacity of pores glasses impregnated with solutions have been studied. Highly transparent glasses with nanocrystals grown in pores have been manufactured. Absorption, fluorescence, a…
We investigate the events near the fusion interfaces of dissimilar welds using a phase-field model developed for single-phase solidification of binary alloys. The parameters used here correspond to the dissimilar welding of a Ni/Cu couple. The events at the Ni and the Cu interface are very different, which illustrate…
Linear copolymeric polyesters (polyoxoesters) containing thioether functions [poly(3,3'-thiodipropionic acid-co-alpha,omega-alkanediols)] were formed in good yield by esterification of an equimolar mixture of 3,3'-thiodipropionic acid (4-thiaheptane-1,7-dioic acid) and 1,6-hexanediol (weight average molecular mass, M(…
Our recent preparation of dicubyl disulfide (1) revealed some unusual properties concerning the S-S as well as the C-S bonds. In our continuing examination of this novel compound, we investigated its oxidation as well as sulfur insertion reactions. The oxidation process delivers all four possible derivatives, whereas…
By using photoelectron emission microscopy, we systematically investigated the magnetic domain in the La0.6Sr0.4MnO3 patterned thin film with several microns, in which we can control the ratio of a shape anisotropy to a step-induced uniaxial anisotropy in magnitude. We demonstrate that a cooperative effect of a step-i…
<div class="htmlview paragraph">Palladium-based catalyst can be employed for natural gas exhaust clean up due to its high activity for light hydrocarbon oxidation. Unfortunately, trace amounts of sulfur in the natural gas feed severely deactivate the catalyst.</div> <div class="htmlview paragraph">In…
Abstract Mesoporous silica films were synthesized by dip‐coating. In this process, evaporation induced self‐assembly leads to the formation of an ordered pore structure. Two types of films with different optical properties have been found in dependence on the humidity during the synthesis. The synthesis field has been…
Abstract Single crystals of oxidephosphates MTi 2 O 2 (PO 4 ) 2 [M: Fe (dark red), Co (pinkish red), Ni (green)] with edge‐lengths up to 0.4 mm were grown by chemical vapour transport. FeTi 2 O 2 (PO 4 ) 2 and CoTi 2 O 2 (PO 4 ) 2 are isotypic to NiTi 2 O 2 (PO 4 ) 2 . The crystal structure of the latter was previousl…
<div class="htmlview paragraph">In the early years of antifreeze/coolants (1920s &amp; 30s) glycerin saw some usage, but because of higher cost and weaker freeze point depression, it was not competitive with ethylene glycol. Glycerin is a by-product of the manufacture of biodiesel (fatty acid methyl esters)…
Owing to the potential application of Nitinol as an advanced structural material, it is essential to thoroughly understand the deformation and fracture behavior of Nitinol under various loading conditions. The present study explores the fracture behavior of Nitinol under quasistatic and dynamic loading, with emphasis…
Abstract Cell dynamics simulation (CDS) is a very promising approach to model dynamic processes in block copolymer systems at the mesoscale level. It is difficult to implement a real time and experimental‐scale simulation with traditional serial algorithms because of the expensive computation. A parallel, spatial deco…
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 Masatoshi Kitamura, Yasutaka Kuzumoto, Masakazu Kamura, Shigeru Aomori, Yasuhiko Arakawa; High-pe…
We report on the measured electro-optic coefficients of approximately 150 pm/V at 1310 nm and 1550 nm for poled guest-host polymer films made with the chromophore AJ404L. Films were poled using corona poling and parallel-plate poling techniques. The films were fabricated and poled and the electro-optic coefficients me…
A lumped element-based negative index metamaterial (NIM) was designed, fabricated, and tested for operation at 400MHz in the ultrahigh frequency (UHF) band. At 400MHz the measured real part of the index of refraction of this NIM was nreal=−3.11 with a loss that was less than 1dB∕cm using unit cells whose overall size…