Materials Literature
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Fabrication of biomaterials with ability to form a bond with bone tissue for bone skeletal system repair is one of the biomaterial science aims. Bioactive glasses containing CaO-SiO2-P2O5 are among the most important groups used in biomedicine and dentistry such as bone defect repair and maxillo-facial reconstruction.…
The corrosion properties of a 22.5 wt. (%) Cr duplex stainless steel were investigated after long-term aging of 3000, 5000 and 7000 hours at 300 and 400 ºC. The corrosion resistance was measured based on mass loss in a FeCl3 10 wt. (%) solution and electrochemical measurements in a 0.1 M H2SO4 solution. The results in…
Giysi konforu son yillarda kumas ozellikleri icin en onemli nitelik olmaya baslamis ve isil ozelliklerin olcumunu kapsayan bircok calisma gerceklestirilmistir. Ancak bu calismalarin buyuk bir bolumunde isil ozellikler sadece kuru durumda incelenmistir. Bu calismanin amaci, terleme sonrasindaki isil ozellikleri analiz…
For the first time, a general viewpoint of electronegativity and chemical bond in alloy semiconductors, e.g., Mg x Zn 1-x O (x = 0.0-1.0) was proposed. The variation of bulk modulus and bond length, as well as their dependence on Mg concentration x were quantitatively simulated. The bulk moduli of Mg x Zn 1-x O alloys…
Amphiphilic polymers represented by block copolymers self-assemble into well-defined nanostructures capable of incorporating therapeutics. Polymer nanoassemblies currently developed for cancer treatment and imaging are reviewed in this article. Particular attention is paid to three representative polymer nanoassemblie…
Combining advanced transmission electron microscopy with high-precision first-principles calculation, atomic-scale structures of the LaAlO3/TiO2 interface are investigated and bridged to their electronic property at the atomic level. Experimentally, the deposited TiO2 thin film is demonstrated to have an anatase phase…
Abstract Copper and titanium remain relatively plentiful in earth crust. Therefore, using them in solar energy conversion technologies are of significant interest. In this work, cuprous oxide (Cu2O-modified short TiO2 nanotube array electrode was prepared based on the following two design ideas: first, the short titan…
A new concept for the efficient synthesis of cationic dendrons, 4-tert-butyl-1-(3-(3,4-dihydroxybenzamido)benzyl)pyridinium bromide (17), 1,1'-(5-(3,4-dihydroxybenzamido)-1,3-phenylene)bis(methylene)bis(4-tert-butylpyridinium) bromide (18), N1,N7-bis(3-(4-tert-butyl-pyridium-methyl)phenyl)-4-(3-(3-(4-tert-butyl-pyridi…
We provide detailed calculation of the ac conductivity in the case of $1/r$ Coulomb interacting massless Dirac particles in graphene in the collisionless limit when $\ensuremath{\omega}⪢T$. The analysis of the electron self-energy, current vertex function, and polarization function, which enter into the calculation of…
The birth of a crystal is initiated by a nucleus from which the crystal grows--a dust grain in a snowflake is a familiar example. These nuclei can be heterogeneous defects, like the dust grain, or homogeneous nuclei which are intrinsic to the material. Here we study homogeneous nucleation in nanoscale polymer droplets…
This paper presents mathematical expressions of dc and ac flashover discharge characteristic constants (n and N) of polluted insulators. It's shown that the proposed relationships of n and N are not static and they depend on the parameters of the equivalent electrical circuit and thermal characteristics of discharge.…
In the present paper we describe the surface modification of alumina nanoparticles using epoxy-containing alkoxysilanes (silane coupling agents, SCA). The materials were characterized using infrared spectroscopy and solid-state nuclear magnetic resonance. Whereas, neat alumina nanoparticles could be expectedly modifie…
We synthesized stable Au−Cu 2 S core−shell-type hybrid nanocrystals, in which the spherical Au core encapsulates in the disk-type Cu 2 S nanocrystals (avg. size = 7 ± 1 nm), using the simple in situ solvothermal growth of Cu 2 S on Au nanoparticle seeds. Binding energy and band gap measurement provides evidence for th…
In order to predict the behavior of concrete structures under impulsive loading it is not only essential to be able to model the dynamic strength and other strain rate dependent properties of the material, but also to describe realistically the damage and the softening process of the material. Various material models…
Interest in and thereby also development of ordered mesoporous silicates as drug delivery devices have grown immensely over the past few years. On hand selected cases from the literature, the power of such systems as delivery devices has been established. Specifically, it is shown how it is possible to enhance the rel…
BACKGROUND: During production and processing of multi-walled carbon nanotubes (MWCNTs), they may be inhaled and may enter the pulmonary circulation. It is essential that interactions with involved body fluids like the pulmonary surfactant, the blood and others are investigated, particularly as these interactions could…
An unprecedented Au(18) thiacrown directed by Au(I)···Au(I) interactions and supported by tridentate phosphine (dpepp) and μ(3)-sulfido ligands that highly resembles the 18-membered thiacrown ether [18]aneS(6) in appearance has been synthesized. The sulfides of the Au(3)(μ(3)-S) units in the central cavity point towar…
The study described in this article explored the effect of adding different types of carbon materials (graphite powder and three types of carbon fibre), fly ash (with 5.6%, 15.9% and 24.3% Fe2O3), and a mix of both on electromagnetic interference (EMI) shielding in Portland cement pastes. The parameters studied includ…
By means of molecular-dynamics simulations, temperature-driven diffusionless structural phase transitions in equiatomic and nearly equiatomic ordered nickel-titanium alloys were investigated. For this purpose, a model potential from the literature was adopted [W. S. Lai and B. X. Liu, J. Phys.: Condens. Matter 12, L53…