Fabrication of Nanoporous Block Copolymer Thin Films through Mediation of Interfacial Interactions with UV Cross-Linked Polystyrene
7213-7216
Materials Literature
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Position‐sensitive radiation detectors made of single crystal CVD diamond
Abstract Based on a single crystal chemical vapour deposition (scCVD) diamond plate a position sensitive detector [position sensitive detection position sensitive detector (PSD)] has been fabricated. The ∼9 mm 2 sensing area of the detector consists of a diamond‐like carbon (DLC) thin film, in the form of a plane‐pad…
Formation of Two Kinds of Hexagonally Arranged Structures in ABC Triblock Copolymer Thin Films Induced by a Strongly Selective Solvent Vapor
An order-order transition (OOT) in the sequence of a hexagonally arranged core-shell cylinder to a double-hexagonally arranged dot in polystyrene-block-poly(butadiene)-block-poly(2-vinylpyridine) (SBV) triblock copolymer thin films is reported to be induced upon exposure to a solvent vapor that is strongly selective f…
Influence of hydrogen on nanocrystalline diamond surfaces investigated with HREELS and XPS
Abstract Nanocrystalline diamond (NCD) films are of great importance for many applications. They can be implemented as transparent protective coatings or for the use in electronic devices, sensor systems, and bioelectronic systems. In many applications the surface properties dictate the eventual performance of the dev…
Investigation on the role of nitrogen in crystallization of Sb-rich phase change materials
To better understand the role of nitrogen (N) during crystallization of Sb-rich phase change materials, a study was conducted using Sb and Sb70Te30 as host materials of N. Crystallization of the as-sputtered Sb–N films of varying N content was examined to reveal that Sb–N bonds are formed in the as-sputtered states, e…
Effect of hybridization on structural and magnetic properties of iron-based superconductors
We show that the strong hybridization between the iron 3d and the arsenic 4p orbitals, in the newly discovered iron-based high- T c superconductors, leads to an explanation of certain experimental observations that are presently not well understood. The existence of a lattice distortion, the smallness of the Fe magnet…
Exchange-induced Tm magnetism in multiferroic h-TmMnO3
Analysis of (169)Tm Mössbauer spectra recorded for (hexagonal phase) h- TmMnO(3) confirms that the Mn sublattice orders magnetically below T(N)(Mn) = 82-83 K and reveals the growth of a local Tm moment at the 4b site that is induced by the Mn-Tm exchange interaction. The maximum hyperfine field recorded at the (169)Tm…
Identification of hydrogen and deuterium at the surface of water ice by reflection electron energy loss spectroscopy
A nondestructive method to distinguish between hydrogen (H) and deuterium (D) at surfaces by reflection electron energy loss spectroscopy is presented. It is based on the analysis of the energy distributions of electrons elastically backscattered from surfaces containing H or D. We consider standard and deuterated wat…
Adsorption and reaction of NO on the clean and nitrogen modified Rh(111) surfaces
The adsorption states and thermal reactions of NO on the clean and nitrogen modified Rh(111) surfaces were investigated between 20 and 150 K using infrared reflection adsorption spectroscopy (IRAS) and temperature programmed desorption. On the clean surface, singleton species at atop and hollow sites were observed at…
Modeling of Surface Charge Decay in a Spherical Cavity within a Solid Dielectric Material using Finite Element Analysis
The modelling of cavity surface charge decay through conduction along the cavity wall using the Finite Element Analysis (FEA) method is presented in this paper. A field-dependent cavity surface conductivity is proposed and the Phase-Resolved Partial Discharge (PRPD) patterns obtained from experimental measurements use…
Hydro‐spinning: A novel technology for making alginate/chitosan fibrous scaffold
Alginate/chitosan polyelectrolyte complex (PEC) hybrid fibers are promising materials for scaffold-making in tissue engineering. In this study, a new method termed "hydro-spinning" was developed to make alginate/chitosan hybrid fibers. In hydro-spinning, a chitosan solution was pumped into a flowing sodium alginate so…
Comparison of Alternative Techniques for Characterizing Magnetostriction and Inverse Magnetostriction in Magnetic Thin Films
We compare the direct and inverse techniques of measuring magnetostriction in magnetic thin films. We chose a set of four magnetic thin film samples (Co95Fe5, Co60Fe20B20, Ni65Fe15Co20, and Ni80Fe20) for the measurements, representing positive and negative magnetostriction and having saturation magnetostriction of mag…
Properties of ultrahigh‐molecular‐weight polyethylene nanocomposite films containing different functionalized multiwalled carbon nanotubes
Abstract We compared the thermomechanical properties, morphologies, gas permeabilities, and electrical conductivities of ultrahigh‐molecular‐weight polyethylene (UHMWPE) nanocomposite films containing two types of functionalized multiwalled carbon nanotubes (functionalized MWNTs). Both 2‐hydroxyethyl triphenyl phospho…
Control of electric current by graphene edge structure engineering
In graphene nanoribbon junctions, the nearly perfect transmission occurs in some junctions while the zero conductance dips due to antiresonance appear in others. We have classified the appearance of zero conductance dips for all combinations of ribbon and junction edge structures. These transport properties do not att…
Formation of deep periodic trenches in photo-electrochemical etching of n-type silicon
The process of trench formation in photo-electrochemical etching of n-type Si (1 0 0) has been studied as dependent on the normalized etching current density j/jPS and on the line seed period a. Experiments were performed on n-type Si (1 0 0) samples with resistivity ρ = 5 and 15 Ω cm. V-shaped grooves with a period a…
Diamond CVD by a Combined Plasma Pretreatment and Seeding Procedure
Abstract A novel nucleation process (NNP), called the Rotter nucleation process in a recent review article, is described in detail in this paper. The NNP is based on the initial formation of a carbon film that, together with the diamond seeds on the surface (by standard seeding), plays an important role in the growth…
Magnetic properties and dopant-dependent exchange bias in Ti-doped charge ordered Bi0.4Ca0.6MnO3
Magnetic properties and dopant-dependent exchange bias in Ti-doped charge ordered Bi0.4Ca0.6MnO3, Zhu, Xuebin, Sun, Yuping, Shi, Dongqi, Lei, Hechang, Zhang, Shoubao, Song, Wenhai, Yang, Zhaorong, Dai, Jianming, Dou, Shixue
Inorganic Cryptand: Size‐Selective Strong Metallic Cation Encapsulation by a Disilicoicosatungstate (Si2W20) Polyoxometalate
Wählerisch: Das Polyoxometallat [(γ-SiW10O32)2(μ-O)4]8− (18−) verfügt über einen Hohlraum, der größenselektiv die Ionen Pb2+, Sr2+, Na+, Ag+, K+ und Rb+ (hellblau im Bild; Si verdeckt, W grau, O rot) aufnimmt, während die größeren Ba2+- und Cs+-Ionen (rosa) ausgeschlossen bleiben. Die Molekülstrukturen von [Mn+⊂1](8−n…
Tunneling times in metamaterials with saturable nonlinearity
Tunneling times of electromagnetic planar wave propagating through a barrier made of split-ring resonators and long metallic wires embedded into a dielectric with saturable nonlinearity are analyzed. For such structure, analytical expressions for the tunneling times and relation between the group delay and the dwell t…
Preparation of nano‐Ag particles and their modification on the mechanical and dielectric properties of epoxy resin
Abstract Nano‐Ag particles stabilized by a hyperbranched polymer (HBP) template were prepared for modifying the epoxy resin. The effects of preparation condition on the size and size distribution of Ag colloidal particles were studied. The Ag@HBP particles were then compounded with the epoxy resin to obtain the Ag@HBP…