Materials Literature
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Polyazulene (PAz) has been electrochemically deposited on different electrode substrates. The films were characterized with Raman and UV-vis spectroscopy. The spectroelectrochemical studies were performed in situ during p- and n-doping (electrochemical oxidation and reduction, respectively). The focus of this work was…
Full‐dense fine‐grained bulk Pb(Zr,Ti)O 3 (PZT) ceramics with a thicknesses of 300 μm were successfully obtained by aerosol deposition (AD) employing the starting powder subjected to an adequate pretreatment. It was found that formation of internal pores during the postdeposition firing treatment takes place in two di…
We employed a grating profile measurement method, which is based on the combination of multiwavelength scatterometry and artificial neural network, to determine the critical dimensions of submicrometer-period photoresist gratings with wavy sidewall profiles. Six laser beams in three wavelengths and two orthogonal pola…
Using ethanol as a solvent p-aminoazobenzene (p-AAZB), an organic nonlinear optical crystal having good optical quality was grown by slow evaporation solution technique. Structural and optical properties were studied by applying XRD and UV-Vis spectroscopy. The measurement of the second harmonic generation was perform…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTPolymer Crystallites with Few Tie Molecules from a Miscible Polymer BlendYongjin Li*, Yuko Iwakura, and Hiroshi ShimizuView Author Information Nanotechnology Research Institute, National Institute of Advanced Industrial Science and…
BACKGROUND: Gene synthesis technologies are an important tool for structural biology projects, allowing increased protein expression through codon optimization and facilitating sequence alterations. Existing methods, however, can be complex and not always reproducible, prompting researchers to use commercial suppliers…
This article highlights the aggregation behaviour of potential low molecular weight hydrogelators on attracting surfaces. Our goal was the development of a method, which enables the finding of new hydrogelators that are not easily recognizable as such because they only form instable or no hydrogels in aqueous solution…
Successful structural reinforcement of polymer matrices by carbon nanotube has been broadly applied where significant improvement of mechanical properties was achieved at a low carbon nanotube loading rate. The notion of the mechanical properties of aligned composites are better than random ones has been proofed and d…
Periodat im Zentrum: Ein Wolframperiodatcluster der Form β*-[H3W18O56(IO6)]6−, in dem Periodat in einen {W18O54}-Käfig eingeschlossen ist, konnte als erstes [HnW18O56(XO6)]m−-Heteropolyoxowolframat kristallographisch charakterisiert werden. Massenspektrometrische, elektrochemische und Katalysestudien sowie DFT-Rechnun…
The authors thank the Korea Science and Engineering Foundation (KOSEF) through the NANO Systems Institute-National Core Research Center (NSI-NCRC) Program for financial support.
The magnetic phase diagram for [Ru 2 (O 2 CMe) 4 ] 3 [Cr(CN) 6 ] was determined from temperature dependent isothermal magnetization studies below its 33-K T c . Below ∼25 K, the change in slope of the M ( H ) for ∼1100 ± 400 Oe increases with increasing temperature, as does the initial slope at lower applied field, wh…
[(K x Na 1 − x ) 0.95 Li 0.05 ](Nb 0.95 Ta 0.05 )O 3 (K x NLNT) ( x= 0.40–0.60) lead‐free piezoelectric ceramics were prepared by conventional solid‐state sintering. The effects of K/Na ratio on the dielectric, piezoelectric, and ferroelectric properties of the K x NLNT ceramics were studied. The experimental results…
An analytic formula is derived for the sensitivity of collimators achieving transverse collimation with a slit and axial collimation with a slat assembly whose septa may be parallel or focus on a line. The formula predicts sin(3) phi dependence on the incidence angle and, in the particular case of parallel slats, 1/h…
We report an unusual electroconvection in the nematic phase of a bent-core liquid crystal. In a voltage-frequency diagram, two frequency regions exhibiting prewavy stripe patterns were found, as reported by Wiant We found that these stripes never show extinction dark when cells were rotated under crossed polarizers. B…
The complete I–V characteristics of SnO 2 ‐based varistors, particularly of the Pianaro system SCNCr consisting in 98.9%SnO 2 +1%CoO+0.05%Nb 2 O 5 +0.05%Cr 2 O 3 , all in mol%, have been seldom reported in the literature. A comparative study at low and high currents of the nonohmic behavior of SCNCr‐ and ZnO‐based var…
This paper reports on two new aspects of oxide perovskites: the first part is devoted to new phase transitions, especially at high temperatures; multiferroics such as BiFeO 3 and Pb–Fe–W–titanate are emphasized but nonmagnetic materials such as SrSnO 3 are included. The work summarized on bismuth ferrite emphasizes it…
Abstract Light‐guiding core/sheath fibers are fabricated from two different refractive index (RI) polymers by coaxial electrospinning. The morphology and fiber diameter are analyzed with scanning electron and fluorescence microscopies. It is found that the diameter of the core and the thickness of the sheath could be…
All messenger-RNA (mRNA) molecules in eukaryotic cells have a polyadenylic acid [poly(rA)] tail at the 3'-end and human poly(rA) polymerase (PAP) has been considered as a tumor-specific target. A ligand that is capable of recognizing and binding to the poly(rA) tail of mRNA might interfere with the full processing of…
A simple galvanic reduction for direct growth of Au nanowires on silicon wafers is developed. The nanowires were prepared by reacting HAuCl4aq with Sns in the presence of CTACaq (cetyltrimethylammonium chloride) and NaNO3aq, which were important to the product morphology development. The nanowire diameter was 50-100 n…
Polyaminocarboxylate-based luminescent lanthanide complexes have unusual emission properties, including millisecond excited-state lifetimes and sharply spiked spectra compared to common organic fluorophores. There are three distinct sections in the structure of the luminescent lanthanide chelates: a polyaminocarboxyla…