Materials Literature
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Purpose The aim of this paper is to investigate the effect of cathodic charging and corrosion behavior of Ti‐48Al‐2Cr‐2Nb alloy in hydrochloric acid solutions. Design/methodology/approach TiAl alloy specimens of thickness 0.5 mm were cathodically charged in 0.1 M HCl solution at room temperature. The prominent current…
Abstract Gd/Ni compounds with different Gd concentration have been investigated with constant initial state spectroscopy (CIS) of photoemission utilizing the light of synchrotron radiation. The photoemission cross‐sections of Gd 5d and 4f states show a strong resonance in CIS spectra at the Gd 5p absorption edge. The…
We present polydimethylsiloxane (PDMS) microlenses capable of thermally tuning their focal lengths via optically transparent indium tin oxide (ITO) microheaters. Microlenses with various diameters are created by molding PDMS over microstructures of reflowed photoresist. Due to a relatively large thermal expansion coef…
Ion Beam Assisted Deposition (IBAD) offers the opportunity to prepare highly textured templates for YBa2Cu3O7-δ(YBCO) coated conductors. We investigated a new simplified buffer layer architecture on mechanically polished stainless steel tapes with an amorphous Ta0.75Ni0.25bed layer. Cube textured TiN layers have been…
A SERS study of chromone 3-carboxylic acid adsorbed on silver colloids was undertaken, in order to assess the ability of this compound to accept electrons in charge transfer (CT) processes. Theoretical SERS intensities under photoinduced CT resonant conditions have been carried out for both the neutral and the deproto…
We report experimental excitation and characterization of surface plasmon modes in planar metal-insulator-metal (MIM) waveguides. Our approach is based on determining the width of the reflection angular spectrum in the attenuated total reflection (ATR) configuration. Owing to its transverse character, the ATR configur…
Abstract Der Einsatz fester, offenporiger Schwämme in verfahrenstechnischen Anwendungen verspricht viele Vorteile. Bedingt durch ihre Struktureigenschaften weisen sie einen geringen Druckverlust und einen verbesserten Wärme‐ und Stofftransport im Vergleich zu herkömmlichen Partikelschüttungen auf. So wurde in den verg…
Theoretical model is presented to describe the anomalous ordered phase of Pr ions in ${\text{PrBa}}_{2}{\text{Cu}}_{3}{\text{O}}_{6+x}$ below ${T}_{\text{Pr}}\ensuremath{\approx}12--17\text{ }\text{K}$. The model considers the Pr multipole degrees of freedom and coupling between the Cu and Pr subsystems. We identify t…
We recently presented a direct readout technique for the dc Superconducting QUantum Interference Device (SQUID) without flux modulation (FM), operated in voltage bias mode, and named it the SQUID Bootstrap Circuit (SBC). The SBC combines additional voltage and current feedbacks to minimize the room-temperature preampl…
Hybrid Pt/TiO(2) nanostructures with diverse morphologies from nanodot, nanowire to mesoporous structures were obtained by a one-step synthesis based on block copolymer self-assembly. The structural transformation was easily tuned by controlling the relative amount of TiO(2) sol-gel precursor to poly(styrene-block-eth…
A rigorous and efficient computational method is developed to calculate transmission and reflection spectra for a finite number of air-hole arrays in a slab, where the incident waves are propagating modes of the slab. The method is a three-dimensional extension of the Dirichlet-to-Neumann (DtN) map method previously d…
This study presents a large-scale synthesis of water-soluble sodium fluosilicate (Na(2)SiF(6)) nanowires, which serve as a versatile template for producing nanotubes.
Abstract Forces created by the expansion of water during freezing (ice formation) are in nature responsible for many significant changes of materials. The coagulation of particles was observed after freezing and thawing of a particles suspension. Here we show how freezing of a suspension can create internal forces com…
In this study, we report an electrolyte–insulator–semiconductor (EIS) device with a novel high-k Tm2Ti2O7 sensing membrane for pH detection. In this research, the sensing membrane was fabricated by reactive sputtering and postdeposition annealing treatment. The effect of thermal annealing (700, 800, and 900 °C) on the…
Abstract Decay kinetics of the intrinsic luminescence from the triplet excited state of self‐trapped excitons in CdMoO4 and ZnWO4 has been investigated in a wide temperature range between 7 and 300 K. The measurements are carried out under low‐density excitation with the fourth harmonics (266 nm) of a Nd:YAG laser. Th…
We present results from X-ray absorption spectroscopy ͑XAS͒ and resonant inelastic X-ray scattering ͑RIXS͒ of oxidized polycrystalline copper surfaces ͓Cu͑I͒ and Cu͑II͒, respectively͔ exposed to a 1.0 mM aqueous solution of Na 2 S ͑sodium sulfide͒ for several hours.Scanning electron microscopy reveals that the Cu oxid…
In this Article, we report on plasmonic nanostructured surfaces with almost all colors by nanosphere lithography. The feature sizes of the plasmonic nanostructures can be controlled by O 2 reactive ion etching and gold evaporation conditions. The optical properties of the plasmonic nanostructured surfaces can be easil…
We propose an extraction technique for parasitic resistance (RP) withL-,VGS-, andVDS-dependences even for largeVDSin amorphous indium-gallium-zinc oxide thin-film transistors (a-IGZO TFTs), by employingIDS-VGScharacteristics (as a function ofVDS) of twoa-IGZO TFTs with different channel lengths (L1andL2). The resistan…
Er:NaY(WO4)2 and Er:Yb:Ce:NaY(WO4)2 crystals were grown by the Czochralski method. Er:Yb:NaY(WO4)2, Er:Ce:NaY(WO4)2, and Yb:NaY(WO4)2 crystal powders were synthesized by means of the solid-state reaction. The spectroscopic properties of the crystals were investigated, including the absorption and fluorescence spectra…
BACKGROUND: Atrial fibrosis creates a vulnerable tissue for atrial fibrillation (AF), but the spatial disarray of collagen fibers underlying atrial fibrosis is not fully elucidated. OBJECTIVE: This study hypothesizes that harmonics optical microscopy can illuminate the spatial mal-alignment of collagen fibers in AF vi…