Materials Literature
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A series of experiments has been performed to seek more insight into the staging process that occurs during anion-exchange intercalation of some organic carboxylates and phosphonates into the layered double hydroxide [LiAl2(OH)6]Cl.yH2O. High resolution transmission electron microscopy has been employed to gain additi…
AIM: To investigate the apoptotic effect of photoexcited titanium dioxide (TiO(2)) nanoparticles in the presence of visible light on human hepatoma cell line (Bel 7402) and to study the underlying mechanism. METHODS: Cerium-element-doped titanium dioxide nanoparticles were prepared by impregnation method. Bel 7402 hum…
Several Ti-Ni-Nb shape memory alloys (SMAs) with various Nb contents (0∼15 mol%) or Ni/Ti atomic ratios (1.0∼1.1) were tested to investigate the martensitic transformation temperatures and mechanical properties. The martensitic transformation temperatures (Ms, Mf, As and Af) of the solution-treated Ti-Ni-Nb alloys at…
Anatase TiO 2 films were deposited on glass slides by liquid phase deposition at temperatures of 50 – 200 ° C . All films displayed preferential c -axis orientation, and morphological examinations revealed that the films underwent a transition from continuous nucleation to grain growth. Kinetic analysis by the Hancock…
Samples of mesoporous base-catalysed silica xerogel materials made by the sol-gel process were impregnated with an anticancer drug--doxorubicin, followed by different times of ageing at room temperature. The effect of ageing time on the physical and structural properties as well as sorption-desorption of the drug was…
We study the immersion of a ferromagnetic nanowire within a nematic liquid crystal using a lattice Boltzmann algorithm to solve the full three-dimensional equations of hydrodynamics. We present an algorithm for including a moving boundary, to simulate a nanowire, in a lattice Boltzmann simulation. The nematic imposes…
The dendritic architecture represents the fourth major class of polymers. Though hyperbranched polymers and structurally-perfect dendrimers (e.g., poly(amidoamine), PAMAM) both share this designation, the latter are of greater use for nanoreactor applications. One such application that exploits the container/reactor p…
The modification of clay by ion exchange reaction with cationic surfactants plays an important role in the greater interlayer spacing of Na-bentonite. Four types of quaternary alkyl ammonium ions, DO AM, DOEM, DCEM and DTDM, were introduced into the clay in order to investigate the effects of intercalation of the cati…
The significance of ion impact and radical species density on ash-induced modification of an extreme ultralow-κ interlevel dielectric (ILD) material (κ<2.0) in a patterned single damascene structure exposed to Ar∕O2 and Ar∕N2 dual frequency capacitive discharges is determined by combining plasma diagnostics, mo…
1 ABSTRACT During the last decade the simulation of the airbag deployment process has become a standard application of explicit finite element codes. At the beginning of the development the focus was to capture the influence and improve the results of dummy impact on fully inflated airbags. Later the deployment kinema…
A highly oriented and densely packed Co–Al layered double hydroxides (LDHs) nanosheets thin-film electrode has been successfully fabricated by drying a transparent colloidal suspension of Co–Al LDHs nanosheets on a pretreated indium tin oxide-coated glass plate substrate. The electrochemical investigations show that t…
Transparent Yb(3+), Er(3+) and Tm(3+) co-doped nano-glass-ceramics 3(SiO(2)2)9(AlO(1.5))31.5(CdF(2))18.5(PbF(2))5.5(ZnF(2)):3.5(Yb-Er-TmF(3)), mol%, have been prepared where co-dopants mostly partition in nano-crystals Pb(1-x) (Yb(3+),Er(3+),Tm(3+))(x)F(2+x) embedded in the glass network. The Yb(3+) ensures high absor…
Current density levels are expected to increase by orders of magnitude in nanoelectronics. Electromigration which occur under high current density is the major concern for the nanoelectronics industry. Using a general purpose computational model, which is capable of simulating coupled electromigration and thermo-mecha…
For understanding the microstructual details of nano-size oxide particles, three types of ODS ferritic and austenitic steels were examined by high voltage electron microscopy, EDS and AP-FIM. The oxide included Y, Ti and O and showed a shell-like structure with different composition. The shell-like structure depends o…
The paper reports on a study of the luminescence of lithium borate crystals (Li 6 Gd(BO 3 ) 3 doped by Eu 3+ and Ce 3+ ions, Li 5.7 Mg 0.15 Gd(BO 3 ) 3 : Eu, and Li 6 Eu(BO 3 ) 3 ) initiated by selective excitation by synchrotron radiation at excitation energies of 3.7–27 eV at 10 and 290 K. Efficient energy transfer…
Medium-sized pores of which diameter was over 100 nm were successfully prepared by anodization in 3 wt% HF aqueous solution containing KMnO4 and surfactant. The presence of an appropriate oxidizing agent and a surfactant was indispensable for the formation of medium-sized pores, but the concentration dependence was no…
CdS and ZnS thin films composed of nanocrystalline granules have been obtained as deposits at the water/toluene interface in a beaker. Metal diethyldithiocarbamates dissolved in toluene provide metal ions while Na2S dissolved in water provides the sulfide ions for the formation of metal sulfides. The influences of dep…
We introduce quasi-periodic Fibonaccian phase defects into single-pitched cholesteric liquid crystalline systems. Numerical simulations of reflection spectra from the proposed systems demonstrate simultaneous red, green, and blue reflections or multiple photonic band gaps. Fundamental optical properties are discussed…
A (LSCM/GDC) composite electrode was developed and applied as a solid oxide fuel cell (SOFC) anode for the direct oxidation of sulfur-containing methane. The anode was fully activated in wet at and a constant potential of with respect to a Pt/air reference before the fuel was shifted to wet . In the sulfur-containing…
Access to the new complex [TpCr(CN)3]- enables isolation of two metastable linkage isomers of a face-centered cubic cluster, [Tp8(H2O)6Cu6Cr8(CN)24]4+, both exhibiting an S=15 ground state.