Materials Literature
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In this article, the in vitro effects of seleno-short-chain chitosan (SSCC, molecular weight between 5,000 and 10,000 Da) on the proliferation of human leukemia K562 cells were investigated to illustrate the possible mechanisms involved. 3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assays showed…
Intermolecular interactions dramatically affect the structure/property relationships of electroactive molecules in device environments and have been the subject of significant research effort. Purposeful manipulation of the distance between chromophores is a key parameter in such investigations, although such manipula…
Metallorganic chemical vapor deposition is used as a simple pore-modifying method to fine tune the pore-opening size of SBA-15 materials without significant loss in pore volume and surface area.
The effects of hydrogen plasma substrate pretreatments on the subsequent material and integration properties of a previously developed plasma-enhanced atomic layer deposition Cu process have been investigated. Plasma treatments were observed to improve Cu nucleation and enable lower Cu resistivity, which have importan…
Silver loaded zeolite (Ag-Z) was previously found to have effective bactericidal activity against Escherichia coli. To understand the mechanisms of bactericidal activity of Ag-Z, role of light irradiation was focused and investigated in this study. In this study, we focused on light irradiation. Antibacterial assay an…
In recent years, the occurrence of primary water stress corrosion cracking (PWSCC) in Alloy 600 weld regions of PWR plants has increased. In order to evaluate the crack propagation of PWSCC, it is required to estimate stress distribution including residual stress and operational stress through the wall thickness of th…
Abstract This review paper is devoted to the discussion and comparison of the lumped element equivalent circuit models of the different types of metamaterial transmission lines that have been proposed so far, namely the CL-loaded lines, and those lines based on the resonant type approach. The latter category comprises…
In the present investigation celestite (natural ore of strontium) and blue dust (iron ore fines) have been used for the preparation of strontium hexaferrite powder. The mechanical alloying process has been adopted to prepare strontium hexaferrite powder. The celestite after chemical upradation and physically upgraded…
We present experimental results on the fast β and slow α relaxational dynamics observed through incoherent quasielastic neutron scattering from Pr60Ni10Cu20Al10 melts. The density correlation function, measured over a range of temperatures, shows a clear two-step relaxation process. The critical or crossover temperatu…
In this paper, commercial epoxy resin was chemically modified by different amounts of 3-glycidoxypropyltrimethoxysilane (GPTMS) monomer using an organotin compound as catalyst, aiming to improve the anti-corrosion performance of epoxy coatings on 2024-T3 aluminum alloy substrate. Electrochemical impedance spectroscopy…
Shape memory alloy (SMA) actuators possess an inherent property of sensing a change in temperature and delivering significant force against external loads through a shape change resulting from a temperature‐induced phase transformation. The utilization of a reversible trigonal (R‐phase) to cubic phase transformation i…
Silver nanoparticles were obtained in situ in ormosil sol–gel films with attached urethane groups. Optical spectra of the silver nanoparticles in the films show red shift of absorption maximum with increasing silver concentration from 2% to 10%. In the solutions λmax is shifted from 390 nm till 425 nm; in the films λm…
Abstract The reorganization of cellulose fibers by swelling treatments in alkali solutions results in numerous changes to fiber structure, causing changes of chemical reactivity in the fiber‐solution heterogeneous system. An important part of the change in chemical reactivity is the change of fiber accessibility becau…
We have characterized bulk and local magnetic properties of iron-based oxypnictide superconductor SmFeAsO 0.7 F 0.3 polycrystalline sample ( T c ∼53 K) synthesized at ambient pressure and NdFeAsO 0.7 ( T c ∼52 K) synthesized at high pressure by using SQUID magnetometer, micro-Hall probe, and magneto-optical imaging te…
The 26 papers in this special issue present some of the significant advances in nanodielectrics in the last five years.
The electronic structure of pure N-doped and In-N codoped wurtzite ZnO has been calculated by using first-principles ultra-soft pseudo-potential approach of the plane wave based upon the density functional theory，and the structure change，bandstructure，density of states，difference charge density and the influence of In…
Arkema Inc. produces multi-walled carbon nanotubes (CNT’s) under the trade name Graphistrength ® . Typical dimensions are 10-15 nm in diameter (5-15 walls) and 1-10 microns in length. Commercial and developmental products comprise plain CNT’s (Graphistrength ® C100), high-purity CNT’s (Graphistrength ® U100), thermopl…
Single crystals of the partially oxidised complexes [(n-Bu)4N]2[M(dcbdt)2]5 with M = Au, Ni and Cu (dcbdt = 4,5-dicyanobenzene-1,2-dithiolate) have been obtained by electrocrystallisation techniques. These compounds are isomorphous and present a triclinic structure, space groupP. Their crystal structures were solved f…
This paper describes the design of two- and three-stage cascaded oxide thermoelectric generators (TEGs) for high-temperature heat recovery using reported data to optimize energy conversion efficiency. We used the general intermetallic compounds Bi2(Se,Te)3 and (Bi,Sb)2Te3 for the low-temperature stages and oxides of T…
We report the synthesis of a series of mixed valence Mn(II/IV) tetranuclear clusters [Mn(II)2Mn(IV)2O2(heed)2(EtOH)6Br2]Br2 (1), [Mn(II)2Mn(IV)2O2(heed)2(H2O)2Cl4].2EtOH.H2O (2.2EtOH.H2O), [Mn(II)2Mn(IV)2O2(heed)2(heedH2)2](ClO4)4 (3), [Mn(II)2Mn(IV)2O2(heed)2(MeCN)2(H2O)2(bpy)2](ClO4)4 (4) and [Mn(II)2Mn(IV)2O2(heed)…