ChemInform Abstract: Di‐ and Tri‐Cobalt Silicotungstates: Synthesis, Characterization, and Stability Studies.
Abstract Compounds (IV), (V), and (VI) are characterized by single crystal XRD, cyclic voltammetry, IR, and UV/VIS spectroscopy.
Materials Literature
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Effect of Acrylic Acid Contents and Inorganic Fillers on Physical Properties of Acrylic Pressure Sensitive Adhesive Tape by UV Curing
아크릴 점착테이프는 자동차, 전기전자 및 디스플레이 모듈 접합에 사용된다. 본 연구는 이러한 모듈 접합에 사용되는 고강도 준구조형 점착테이프 제조를 위해 2-ethylhexylacrylate(2-EHA)와 acrylic acid(AAC)를 사용하여 UV 조사에 의한 광중합 및 점착테이프 제조를 위해 광경화를 진행하였고, AAC의 함량 및 무기물 충전제 $SiO_2$ 함량에 따라 아크릴 점착테이프의 물성에 미치는 영향을 고찰하였다. 공단량체로 사용된 AAC의 함량이 많을수록 아크릴고분자 사슬의 강직성이 증가하여 초기 점착력이 낮았고, 시간경과에 따라 점착력이 증가하였…
Large magnetic heat transport in a Haldane chain material Ni(C3H10N2)2NO2ClO4
We report a study on the heat transport of an S = 1 Haldane chain compound Ni(C3H10N2)2NO2ClO4 at low temperatures and in magnetic fields. The zero-field thermal conductivities show a remarkable anisotropy for the heat current along the spin-chain direction (κb) and the vertical direction (κc), implying a magnetic con…
Water Sorption Studies and Adsorptive Features of Highly Swollen Acrylamide-Based Ternary Hydrogels for Uranyl Ions
Highly swollen hydrogels made by the polymerization of acrylamide with citraconic acid and sodium acrylate were investigated as a function of composition to find materials with swelling and uranyl ion sorption properties. The hydrogels were prepared by free radical solution polymerization in aqueous solutions of monom…
Direct measurement of the spin gaps in a gated GaAs two-dimensional electron gas
We have performed magnetotransport measurements on gated GaAs two-dimensional electron gases in which electrons are confined in a layer of the nanoscale. From the slopes of a pair of spin-split Landau levels (LLs) in the energy-magnetic field plane, we can perform direct measurements of the spin gap for different LLs.…
Surface Coating Rescues Proteins from Magnetite Nanoparticle Induced Damage
The presence of magnetic nanoparticles (NPs) in physiological systems induces toxicity through its effects on mitochondrial function and reactive oxygen species (ROS) imbalance. Magnetic NP induced cytotoxicity has been elaborately evaluated for impending threats, however, a detailed investigation is lacking. It is sh…
Effects Of Di And Tetra Functional Epoxy Monomers Structure On The Morphology And The Electro-Optical Properties Of Polymer- Dispersed Liquid Crystal Films
Abstract:- Polymer dispersed liquid crystal (PDLC) films were prepared by polymerization induced separation (PIPS) method with nematic liquid crystal (LC) content as low as 40 wt % and the electro-optical properties were carefully investigated. To accomplish this, epoxy curable monomers structure with different compos…
Syntheses and Properties of Novel Copolymers of Polylactide and Aliphatic Polycarbonate Based on Ketal-Protected Dihydroxyacetone
The novel random copolymers of L-LA and 2, 2-ethylenedioxy-1, 3-propanediol carbonate (EOPDC) were synthesized in bulk using Sn(Oct)2 as a catalyst. The poly(EOPDC -co- L-LA)s obtained were characterized by FT IR, 1H NMR, 13C NMR, GPC and DSC. The copolymers were obtained with yield of 87.9–95.6%. The number average m…
Optical phonon modes in InGaN/GaN dot-in-a-wire heterostructures grown by molecular beam epitaxy
We report on the studies of optical phonon modes in nearly defect-free GaN nanowires embedded with intrinsic InGaN quantum dots by using oblique angle transmission infrared spectroscopy. These phonon modes are dependent on the nanowire fill-factor, doping densities of the nanowires, and the presence of InGaN dots. The…
Kinetics for dislocation structure formation in contact area of squeezed crystalline solids
Evolution of dislocation structure during formation of the contact area was studied in modeling experiments "wedge-plane" for KCl single crystal under loading at room and high (0.8Tm) temperatures. It was shown that at the first (rapid) stage of the process, a quasi-stationary dislocation assemblage is formed due to e…
Collision and dynamic frictional properties of boron nitride nanotubes
Collision and dynamic frictional properties of boron nitride nanotubes (BNNTs) are of importance to their structural applications related to impact protection. In this paper, we present an experimental study of the lateral collision between moving atomic force microscopy probe tips and individual standstill BNNTs. Our…
Theoretical Study of Different Solvent and Temperature Effects on Double-walled Carbon Nanotubes (DWNTs) and Calixarene with Amino Acid: A QM/MM Study
In this investigation, the interaction of Calixarene with amino acid (alanine) with double-walled carbon nanotubes (DWNTs) are examined, with OPLS, Amber and MM+ force field in molecular mechanic (MM) method. The calculations achieved by methods of Monte Carlo simulation in different temperatures. The calculations wer…
Nanofibers and thin films as a selective membrane for sensors and microTAS
A composite material of PAN (polyacrylonitrile), starch granules and dimethylformamide as solvent was used as a selective membrane for volatile organic compounds (VOCs) in gaseous phase. This composite was produced as a thin film obtained by spin-casting and as a fiber mat produced by electrospinning. The fiber mat wa…
Modeling Cu2ZnSnS4(CZTS) solar cells with kesterite and stannite phase variation
Cu2ZnSnS4 (CZTS) may exhibit both kesterite and stannite polymorphs and shows promise as an absorber layer in thin film photovoltaic solar cells to be produced at terawatt scales. This study examines the effects of CZTS polymorphism and inhomogeneous distributions of CZTS polymorphs on device characteristics under sce…
An effect of measurement conditions on the depth resolution for low‐energy dual‐beam depth profiling using TOF‐SIMS
An effect of measurement conditions on the depth resolution was investigated for dual‐beam time of flight‐secondary ion mass spectrometry depth profiling of delta‐doped‐boron multi‐layers in silicon with a low‐energy sputter ion (200 eV – 2 keV O 2 + ) and with a high‐energy primary ion (30 keV Bi + ). The depth resol…
Aging of hydrophobized surfaces of ramie fibers induced by atmospheric pressure plasma treatment with ethanol pretreatment
In order to investigate hydrophilic recovery of hydrophobic treatment of cellulose fibers, ramie fibers are ethanol-pretreated followed by atmospheric pressure plasma jet (APPJ) treatment using helium as the treatment gas and age for up to 150 days in 20 °C and 65% relative humidity. Scanning electron microscopy shows…
Diffusion of chromium and impurity absorption in ZnS crystals
ZnS:Cr single crystals obtained by diffusion doping are investigated. The spectra of optical density in the range of energies 0.3–3.8 eV are investigated. The chromium concentration in the studied crystals is determined using the magnitude of the shift of the absorption edge. Optical transitions determining the impuri…
Quick synthesis of highly aligned or randomly oriented nanofibrous structures composed of C 60 molecules via self-assembly
Assemblies, which are composed of nanoparticles such as nanofibres, have been intensively studied in recent years. This has particularly been the case in the field of biomedicine, where the aim is to develop efficient methodologies for capturing and separating target biomolecules and cells and/or encouraging bio-chemi…
Determination of Aluminium Mole Fraction in AlGaN Layers of GaN-Capped AlGaN/GaN Heteroepitaxial Wafers by Ultraviolet Reflection
Ultraviolet reflection spectroscopy is applicable to the determination of the aluminium mole fraction of GaN-capped AlGaN/GaN heteroepitaxial wafers on silicon, while conventional photoluminescence is inapplicable. AlGaN peaks in the ultraviolet reflection spectra are clearly observed regardless of the cap, but the Al…
Publisher’s Note: Distinct Universality Classes of Domain Wall Roughness in Two-Dimensional Pt/Co/Pt Films [Phys. Rev. Lett.110, 107203 (2013)]
Received 13 March 2013DOI:https://doi.org/10.1103/PhysRevLett.110.139902© 2013 American Physical Society