Materials Literature
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The effects of excess SrO on the thermoelectric properties of n-type SrTiO3 have been investigated through a comparative study of different polycrystalline ceramic samples. These include Gd-doped SrTiO3 with varying SrO, nominally in the form of Ruddlesden-Popper phase of SrO(SrTiO3)n with n = 5, 10, and 20, and previ…
One common way to measure asphere and freeform surfaces is the interferometric Null test, where a computer generated hologram (CGH) is placed in the object path of the interferometer. If undetected phase errors are present in the CGH, the measurement will show systematic errors. Therefore the absolute phase of this el…
Abstract The Alba field is located in Block 16/26 on the UK continental shelf. It has been producing hydrocarbons since 1994 from a loosely consolidated sandstone reservoir. As the field has aged, seawater injection has been used as pressure support and consequently the Alba reservoir sits in a mild barite produced wa…
In bacteria, glycogen or oligosaccharide accumulation involves glucose-1-phosphate partitioning into either ADP-glucose (ADP-Glc) or UDP-Glc. Their respective synthesis is catalyzed by allosterically regulated ADP-Glc pyrophosphorylase (EC 2.7.7.27, ADP-Glc PPase) or unregulated UDP-Glc PPase (EC 2.7.7.9). In this wor…
Proses pengerjaan logam adalah salah satu hal terpenting dalam pembuatan komponen mesin, terutama proses pengerjaan logam dengan mesin bubut. Sehingga diperlukan inovasi yang terus menerus untuk meningkatkan kualitas hasil produksi. Ada beberapa cara yang bisa dilakukan, misalnya dengan pemilihan jenis pahat, kedalama…
Novel structures of an near-infrared (NIR) tetraarylazadipyrromethene (aza-BODIPY) series have been prepared. We designed the core structure containing two amido groups at the para-position of the aromatic rings. The amido group was incorporated to secure insensitivity to pH and to ensure a bathochromic shift to the N…
Resin acids are major constituents of wood extractives and are known to cause a range of paper manufacturing problems including pitch deposition, poor paper machine runnability, and low paper quality. Abietic acid (AA) is one of major constituents of resin acids. Removing AA from colloidal suspension using calcined Mg…
Single additives ( Y 2 O 3 , MgO , and Al 2 O 3 ) were used as sintering aid of Si 3 N 4 . The density, crystal phase, microstructure, transmittance, hardness, and fracture toughness of sintered Si 3 N 4 were investigated. Highly densified sintered bodies were obtained in single Y 2 O 3 and MgO systems, but not in sin…
A sub-hertz harmonic force was used to investigate the elastic response of ternary (1-y-x)Pb(In1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-xPbTiO3 (PIN-PMN-PT) single crystal with compositions (x = 0.30 and x = 0.33) near the Morphotropic Phase Boundary (MPB) under isothermal and zero-field conditions. The observed instability unde…
A 3Y‐TZP / Nb composite fabricated by Hot‐pressing ( HP ) sintering with well‐distributed lamellar/flake–shaped metal particles (20 vol% fraction) has been studied under cyclic loading. Fatigue life was determined for the ceramic/metal composite as well as for monolithic zirconia to compare the sensitivities of both m…
Two-electron-satellite (TES) transition of donor bound exciton (D0X) is an interesting many-body quantum process. In this letter, precise luminescence spectra and temperature behaviors of the TES transition of aluminum bound exciton in two kinds of zinc oxide single crystals were investigated in detail. It is found th…
Composites of electrospun poly(ethylene oxide) (PEO) fibers and silver nanoparticles (Ag NPs) were used as a soft template for coating with TiO2 by atomic layer deposition (ALD). Whereas the as-deposited TiO2 layers on PEO fibers and Ag NPs were completely amorphous, the TiO2 layers were transformed into polycrystalli…
Intramolecular junctions can be formed in single-walled carbon nanotubes (SWNTs) by introducing a pentagon and/or heptagon into the hexagonal carbon lattice. The realization of these carbon-based molecular electronics is still quite challenging. Here, it is reported that nickel or cobalt catalyzed etching can be appli…
Poly(phenylenevinylene)/polyimide (PPV/PI) and poly(phenylenevinylene)/ polymethylmethacrylate (PPV/PMMA) fibrous membranes without any deliberately introduced receptors were prepared as fluorescence sensing materials through electrospinning, followed by thermal treatment. Both of these membranes displayed higher sens…
ABSTRACT The influence of two different compatibilizers and their combination (maleic anhydride grafted high density polyethylene, HDPE‐ g ‐MA; maleic anhydride grafted linear low density polyethylene, LLDPE‐ g ‐MA; and 50/50 wt % mixture of these compatibilizers) on the rheological, thermomechanical, and morphologica…
In this study, SiO2 substrates engineered with three different types of organosilane self-assembled monolayers (SAM) have been proven to assist graphene transfer process. Bottom gate graphene field effect transistors with organosilane interface engineering are fabricated and tested. Improvement of carrier mobility is…
ABSTRACT The dispersion state of composite materials is known to primarily govern their macroscopic properties. With nanoscopic fillers tiny fluctuations in the interactions among particles may even become the prominent parameter. In this article, the dispersion of carbon nanotubes within a polymer was studied by mean…
We have calculated the substrate-limited electron mobility in top-gated, SiO2-supported single-layer graphene from remote-phonon and charged impurity scattering rates. The mobility dependence on gate insulator thickness is explained in terms of the dielectric screening of remote phonons and charged impurities by the h…
Abstract Different extraction methods are used world‐wide in routine soil analysis to estimate long‐term potassium (K) reserves for plants. In Sweden, K extracted with 2 M HCl at 100°C (K HCl ) is frequently used, although with limited understanding of the phases extracted. In the present study, we quantified the effe…
The preparation of polymer brushes (PBs) bearing α-hydroxyalkylphenylketone (2-hydroxy-2-methyl-1-phenylpropan-1-one) moieties as photoreactive polymer backbone substituents is presented. Photoreactive polymer brushes with defined thicknesses (up to 60 nm) and high grafting densities are readily prepared by surface in…