Materials Literature
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The results of dielectric measurements for a mixture of chiral liquid crystal 5*CB with Al(2)O(3) powder are given. A detailed analysis of the dielectric spectra enabled us to obtain information about the influence of the Al(2)O(3) grains on the dynamics of the liquid-crystal molecules. Numerical analysis of the resul…
In die Röhre geschaut: Durch Wirt-Gast-Einschlusskomplexe gebildete Mimetika biologischer Membranen wurden aus Cyclodextrin- und Adamantyl-funktionalisiertem Poly(ethylenimin) und einem Fluoreszenzfarbstoff hergestellt (siehe Bild). Die röhrenförmigen Vesikel wurden mithilfe von Fluoreszenzmikroskopie, cryo-TEM und dy…
The iron sulfate Na 3 Fe(SO 4 ) 3 studied here has been obtained as a high-temperature (HT) product (-400 °C) from the thermal decomposition of sideronatrite from Sierra Gorda (Chile) having composition Na 2 Fe(SO 4 ) 2 (OH)⋅3H 2 O. The structure determination was carried out using synchrotron X‑ray powder diffraction…
Abstract In this study, the effects of the annealing temperature and time on Al 2 O 3 /ZnO/Al 2 O 3 thin films grown by the atomic layer deposition (ALD) method were examined using transmission electron microscopy (TEM) and energy dispersion spectroscopy (EDS). Samples were annealed for 30 s at 600, 620, and 700 °C in…
Abstract The effects of swelling on chain distance, free volume size and orientation of functional groups of copolyimides containing carboxyl groups were examined using wide‐angle X‐ray diffraction (WAXD), positron annihilation lifetime spectroscopy (PALS) and Fourier transform infrared (FTIR) spectroscopy. A 2,3‐dime…
Collagen is the fundamental structural protein, comprising 25-35% of the total body protein, its rod-like triple helix providing support in many tissues. Our laboratory has synthesised 113 Toolkit peptides, each 63 residues long, covering the entirety of the homotrimeric helix sequence of collagen II and collagen III.…
Polytrimethylene terephthalate (PTT) fiber is a new kind of synthetic fiber that has outstanding thermal, chemical, and mechanical properties and has widely been used in leisure wear, underwear, sportswear, and other textile products in the recent years. In this study, five different PTT blended yarns were used for th…
The meteoric alteration of basaltic glass in hyaloclastite (0.55 to 0.2 Ma) from Jeju Island, Korea, was examined using high-resolution electron microscopy, in situ sample preparation using focused ion beam, and microchemical analysis. The glass particles showed a sequential development of alteration textures toward t…
Uchucchacuaite, ideally AgMnPb 3 Sb 5 S 12 , was originally reported as orthorhombic, with possible space group Pmmm, P222, or Pmm2, and unit-cell parameters a = 12.67, b = 19.32, and c = 4.38 Å obtained from powder X‑ray diffraction data (Moëlo et al. 1984a). Using single-crystal X‑ray diffraction, we examined two uc…
Abstract The low‐temperature ultraviolet (UV) irradiation equipment, developed in our Lab, was used to study the photo‐aging of poly (vinyl chloride) (PVC) films at low temperature. The color change kinetics and corresponding structure development of PVC film during low‐temperature UV aging were studied through L * a…
An optimum TiO 2 seed layer is said to facilitate nucleation and subsequent growth of perovskite phase in Pb(Zr,Ti)O 3 (PZT) films during annealing. The actual causes that prevent perovskite growth, particularly in sputtered PZT films on thick TiO 2 seed layers are not yet understood clearly. Herein, based on the resu…
Significant acceleration of the photoluminescence (PL) decay rate was observed in water solutions of two rare earth ions (REIs), Tb and Eu. We propose that the time-resolved PL spectroscopy data are explained by a fluorescence resonance energy transfer (FRET) between the REIs. FRET was directly confirmed by detecting…
Different designs for producing multiple stopband mesoporous silicon rugate filters via electrochemical anodization are compared. The effects of light absorption and dispersion to visible range filter design are investigated. Thermal oxidation is applied for passivating the chemically reactive porous silicon surface,…
Human hair can extract significant levels of calcium and magnesium, water hardness metals, from tap water immediately following chemical treatments and during hygiene practices. We have previously shown that this uptake is primarily a function of the condition of the hair. Depending on the extent of chemical damage, t…
Abstract The surface and adhesion properties of different molecular weight poly(ethylene glycol) (PEG) (400, 1500, and 3000 g/mol) on untreated and air‐atmospheric plasma‐treated PET woven fabrics were studied, with the aim of developing durable hydrophilic PET fibrous structures. PEG application was carried out by pa…
Abstract Water soluble acrylic acid grafted luminescent silicon quantum dots (Si‐QDs) were prepared by a simplified method. The resulting Si‐QDs dissolved in water and showed stable strong luminescence with peaks at 436 and 604 nm. X‐ray photoelectron spectroscopy (XPS) was employed to examine the surface electronic s…
Yttriaite-(Y), ideally Y 2 O 3 , is a new mineral (IMA2010-039) from the alluvial deposits of the Bol’shaya Pol’ya River, Subpolar Urals, Russia. The new mineral occurs as isolated crystals, typically cubo-octahedra <6 μm in size, embedded in massive native tungsten. Associated minerals include: copper, zircon, osm…
Eigenmodes in a typical perforated metal-insulator-metal waveguide structure have been analyzed. It is shown that the lowest eigenmode originates from a plasmonic waveguide mode between metallic layers and has net negative group velocity on the lower branch under TM polarization. The negative group velocity is directl…
Graphene is an excellent conductor, while graphene fluoride is a wide band-gap semiconductor. We propose the formation of graphene channels embedded in graphene fluoride as a method to induce quantum confinement of charge carriers in graphene. In particular, we study the electronic structure of graphene channels drawn…
A multi-cycle heating and cooling thermogravimetric (TG) method was used to study the kinetic behavior of two partially dehydroxylated pyrophyllite samples. In the original state, the S076 sample contains only trans-vacant (tv) layers, whereas in sample S037 tv and cis-vacant (cv) layers are randomly interstratified.…