Materials Literature
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ZnO:Ga (GZO) materials with high thermal stability and high carrier mobility are essential for the development of transparent conductive electrodes (TCE). Theoretically, only the substitution doping of Ga could result in the main donor with very high thermal stability. For achieving this goal, we adopted a hydrotherma…
We report experimental studies on a newly synthesised bent-core liquid crystal exhibiting partial bilayer SmAdPR and SmAdPA phases. Though the SmAdPR phase appears to be optically uniaxial as that of the SmA phase, the observed distinctive properties of the SmAdPR phase are (a) a current peak associated with a polaris…
Hierarchiral NiO flower-like microspheres with tunable porosity were prepared based on a facile solvothermal method. Three kinds of NiO micro-flowers (NiO-A, NiO-B, and NiO-C) with different porosity have been fabricated mainly by tuning the concentration of nickel nitrate. These flower-like microspheres are comprised…
Abstract—A low-loss passive metamaterial exhibiting negative refractive index or “double negative ” electromagnetic properties at microwave frequencies is proposed. The metamaterial is a lattice of spherical particles made up of multiple dielectric materials in concentric layers. Because no magnetic constituents (that…
Photoluminescence Characteristics of Sr3SiO5: Eu2+ Yellow Phosphors Synthesized by Solid-State Method and Pechini Process, Kang, Eun-Hee, Choi, Sung-Woo, Chung, Su Eun, Jang, Jisung, Kwon, Sunghoon, Hong, Seong-Hyeon
Poly(2-oxazoline)s are suitable materials to study structure–property relationships as their preparation by a living cationic ring-opening polymerization procedure and the relatively facile monomer synthesis allow accurate control over the molecular structure. In this contribution, the number of carbon atoms in the li…
By incorporating molecular copper iodide clusters of formula [Cu4I4L4] (L = PPh2(CH2)2CH3) into an UV-polymerizable acrylic resin, namely BEDA (Bisphenol-a-EthoxylateDiAcrylate), transparent and highly emitting photoluminescent composite materials have been synthesized. In these materials, the original luminescence pr…
Surface treatments introduce chemical modifications to the fiber surface that affect the surface free energy (SFE). This is done either with the obvious aim to change the wetting behavior, or to affect related properties, such as, e.g., adhesion phenomenon, surface conductivity, adsorption of proteins, etc. On planar…
The incorporation of H2 into Ar plasma was observed to markedly alter the microstructure of diamond films. The addition of a small percentage of H2 (<1.5%) into the Ar plasma leads to the presence of stacking faults in plate-like diamond grains, the incorporation of 75% H2 induces the formation of the diamond polymorp…
H5PV2Mo10O40-catalyzed oxidation of aromatic aldehydes to the corresponding carboxylic acids using hydrogen peroxide and KMnO4 as oxidants under mild conditions is reported. This system provides an efficient, convenient and practical method for the oxidation of aromatic aldehydes. In this work, differences between Keg…
Our studies focus on controlled and tuned biodegradation, mechanism of biodegradation, biocompatibility, genotoxicity and controlled and sustained drug release performance of poly(hydroxybutyrate-co-valerate) nanohybrids. Nanohybrids were prepared using layered silicates with two different surface modifiers through a…
HKUST-1 is one of the popular metal–organic frameworks (MOFs). The formation of this MOF is significantly accelerated by adding Keggin polyoxometalate anions to the synthesis solution. In this paper the chemistry behind this observation was investigated. Upon addition of Keggin type H3PW12O40 heteropolyacid the specia…
The trifluoroacetate (tfa) salt of the peptide (ala)6lys self-assembles in water into very long, hollow nanotubes with a radius R = 26 nm, above a critical aggregation concentration (volume fraction), ϕcac = 0.10. The peptides carry a net positive charge that ensures colloidal stability of the self-assembly structures…
The synthesis of long-term stable polyoxometalate (POM)-stabilized Pt nanoparticles (NPs) is described here. By means of controlled bulk electrolysis, the reduced POM anions, SiW(12)O(40)(4-) (or SiW(12)) and H(2)W(12)O(40)(6-) (or H(2)W(12)), respectively, served the dual role of reductant and protecting/stabilizing…
Broadband dielectric spectroscopy data on water confined in three different environments, namely at the surface of a globular protein or inside the small pores of two silica substrates, in the temperature range 140 K ≤ T ≤ 300 K, are presented and discussed in comparison with previous results from different techniques…
We report the structure and physical properties of novel hybrids of multiwalled carbon nanotubes (MWCNTs) and ultradispersed diamond (UDD) forming nanocomposite ensemble that were subjected to 50, 100, and 103 kGy gamma ray doses and characterized using various analytical tools to investigate hierarchical defects evol…
The passivity and protective nature of the passive films are essentially related to ionic and electronic transport processes, which are controlled by the optical and electronic properties of passive films. In this study, the electrochemical behavior of passive films anodically formed on AISI 304 stainless steel in sul…
We studied the behaviors of contrast in backscattered electron (BSE) images of cross-sectional heat-treated steel under various accelerating voltages and take-off angles. Changes in these conditions resulted in dramatic changes in contrast. Low accelerating voltage and low take-off angle improved the surface informati…
This paper introduces an easy single-step process for preparing the supercapacitor electrode from carbon nanotubes (CNTs) which were directly grown on a nickel foam framework by a chemical vapor deposition (CVD) technique. Due to the hierarchical porous structure and robust CNT-metal contacts, the present electrode ex…
With the bottom-up design principle, we use metal-ions to bridge the predesigned tectons (1 [(H(2)L(1))(2)(Mo(8)O(26))]·4H(2)O and 3 [(H(2)L(2))(L(2))(0.5)(Mo(8)O(26))(0.5)]·H(2)O) so that two higher dimensional γ-octamolybdate based inorganic-organic hybrid compounds 2 [Cu(I)(2)(L(1))(3)(Mo(8)O(26))(0.5)] and 4 [Ni(L…