Materials Literature
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Depending on the organo-cation mononuclear or polynuclear copper(II) 2,5-pyridinedicarboxylates (L) are formed. Mononuclear complexes with [ML2(H2O)] anions are formed when the cations are derived from ethylenediamine (en), N,N,N′,N′-tetramethylethylenediamine (tmen), 1,5-diaminopentane (dap) and 1,4-diazabicyclo[2.2.…
In this work, we devised a simple optical technique that allowed the nucleation and growth of Ga:ZnO films grown via aqueous synthesis at 90 °C to be studied in situ. Our two fold objective was to study the nucleation processes and to acquire real-time information of the film thickness. In doing so, the growth paramet…
Bipolar switching behaviours of electrochemical metallization (ECM) cells with dual-layer solid electrolytes (SiOx-Ge0.3Se0.7) were analyzed. Type 1 ECM cell, Pt (bottom electrode)/SiOx/Ge0.3Se0.7/Cu (top electrode), exhibited typical eightwise current-voltage (I-V) hysteresis of ECM cells whereas Type 2 ECM cell, Pt…
In this paper, half-tubes, micro-wires and ribbons were constructed in a simple cholesterol-based organogel by varying polar gelation solvents such as acetonitrile, isopropanol, and ethanol. All of them showed hydrophobic surfaces with water contact angles more than 140°. Moreover, the interlaced micro-wires obtained…
The synthesis and characterization of a new nanocomposite material that was prepared from recycled expanded polystyrene (EPS) and titanium dioxide (TiO2) is reported here. The EPS was obtained from chemical reagent box insulation. To obtain the nanocomposite, these materials were dispersed in a solvent, mixed with TiC…
Methane can be an alternative fuel for vehicular usage provided that new porous materials are developed for its efficient adsorption-based storage. Herein, we search for materials for this application within the family of diamond analogues. We used density functional theory to investigate structures in which tetrahedr…
A series of biodegradable triblock copolymers PLA-PEG-PLA were synthesized by ring-opening polymerization of D,L-lactide using PEG as initiator. The structures and molecular weights of the triblock copolymers were characterized by1H-NMR and GPC.Their thermal properties were tested by DSC. The thermosensitive gelation…
Rocket propelled grenade (RPG) shaped charge attack threats are of particular concern for Insensitive Munitions (IM) development. In response to these threats, the U.S. Project Engineering Office for Ammunition (PEO Ammo) have worked with the U.S. Army Armament Research, Development and Engineering Center (ARDEC) Ener…
White light photoconductive atomic force microscopy (pc-AFM) was employed to evaluate nanoscale open circuit (Voc) at high light intensities (up to 200 sun) of three donor:acceptor blends comprising two widely studied polymers and one small molecule donor material. By varying the work function of electron extraction c…
Ultra thin (10–20 nm) and pin-hole free overoxidized polypyrrole films were directly electrosynthezised under potentiostatic conditions in the presence of weak-acid anions, specifically monohydrogenophosphate. Various overoxidized polypyrrole membranes were fabricated in these conditions at different potentials in the…
Single-piece solid-contact polymeric membrane Ag + ion-selective electrodes (ISEs) have been fabricated based on conducting polymer poly(3-octylthiophene) (POT) dissolved into the Ag + ion-selective membrane. The effects of the amounts of POT on the potential responses of the single-piece solid-contact Ag + -ISEs were…
We have used Reversible Addition Fragmentation chain Transfer (RAFT) to polymerize the T-type surfactant monomer α,ω-methacryloylundecyltrimethylammonium bromide (MUTAB) to various degrees of polymerization, and thereby investigate how its self-assembly is affected. Small-angle neutron scattering (SANS) shows that the…
Orthorhombic lanthanum orthoferrites La0.8Sr0.2Fe1-yCuyO3-w (y = 0 and 0.10) have been studied using X-rays and neutron powder diffraction (XRPD and NPD), magnetization measurements and 57Fe Mössbauer spectroscopy. Rietveld refinements on XRPD and NPD data show that they adopt an orthorhombic ABO3 perovskite symmetry…
This work presents a study related to the achievement of forged billets using plane-shape dies from a 5083 aluminium alloy previously processed by the Severe Plastic Deformation (SPD) process known as ECAE (Equal Channel Angular Extrusion). ECAE is one of the most well-known SPD processes and in this study, it is goin…
Understanding the biophysical and chemical interactions of nanoprobes and their fate upon entering live cells is critical for developing fundamental insights related to intracellular diagnostics, drug delivery and targeting. In this article we report herein a single molecule analysis procedure to quantitate site-speci…
The stress state in thermal barrier coating (TBC) systems for gas turbine blades during thermal cycling is mainly governed by (i) the thermal and mechanical mismatch between the ZrO 2 -base topcoat and the Ni-base substrate alloy, (ii) the roughness profile at the interface between MCrAlY-bondcoat (BC) and TBC, and (i…
Soft colloidal crystals are inherently highly susceptible to shear. We find by using scanning rheo-SANS and scanning synchrotron-rheo-SAXS experiments that high shear strains cause macroscopic “Siamese” twinning in lyotropic FCC-crystals formed by block copolymer micelles or polymer-coated nanoparticles. The twins ext…
New type of conducting polyamine–cromium oxide (PANI-Cr2O3) nanocomposites have been synthesized by in situ deposition technique by placing fine grade powder of cromium Oxide during in situ polymerization of aniline. The composites formed were characterized by Scanning Electron Microscopy (SEM). The SEM image confirme…
Natural oligomeric procyanidin (OPC) with high biological and pharmacological activities was successfully used to synthesize OPC-insulin (OPC-INS) nanoparticles with different aggregation sizes for sustained and controlled delivery of hydrophilic insulin. The aggregation size of OPC-INS nanoparticles was regulated by…
Phase behaviors in water/poly(oxyethylene) dodecyl ether (C₁₂EO(n), n = 4, 6, 8)/cetyl isooctanoate (CIO) systems were studied. In the C₁₂EO₆ and C₁₂EO₈ systems, self-assembled structures with positive curvatures, such as O/W microemulsions, and micellar cubic and hexagonal phases, were observed. A wider region of a l…