Materials Literature
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In this study, the new original copolymer film of pyrrole and 2-amino-4-methyl-pyridine has been electrochemically synthesised on 7075 aluminium alloy. The synthesis was achieved in aqueous oxalic acid containing 1∶1 monomer feed ratio. The characteristics of copolymer film were compared with polypyrrole film on Al un…
Temperature is shown to have a huge influence on the electronic properties of nanometric spinel-type cobalt oxides precipitated at low temperature in alkaline media. The initial phase, with formula H x Li y Co 3−δ O 4, contains hydrogen, lithium, cobalt vacancies, and a mixed valence Co 4+ /Co 3+ within the structure,…
Photo‐responsive monoolein cubic phases were developed by immobilizing hydrophobically modified poly (vinyl alcohol)–epoxypropoxy coumarin conjugate (HmPVA–EPC) in the water channels of the cubic phase. On the NMR spectrum of HmPVA‐EPC, the molar ratio of PVA/decanoyl chloride (a hydrophobic anchor)/EPC was determined…
In low-temperature phase, due to the pseudo Jahn-Teller effect in unit cells, atoms are coherently localized in one of eight trigonal wells of the adiabatic potential energy surface. With temperature, nuclear motion delocalizes over symmetry-equivalent wells. Depending on the size of potential barriers, the two limiti…
Fibre reinforced thermoplastic tapes are subjected to high heating and cooling rates during the tape placement process. Such high cooling rates can significantly inhibit the crystallisation of the thermoplastic polymer and thereby affect its mechanical properties, such as strength or toughness. In the present work, th…
Genistein is a phytochemical with a broad range of desirable biological activity for wound healing. However, its poor bioavailability requires developing a new method for fabricating an appropriate carrier vehicle to deliver genistein in a sustained manner. Based on the guidance afforded by the ternary phase diagram o…
Solid liquid interdiffusion technique is employed to attach N type Bi 2 (Te 0·92 Se 0·08 ) 3 thermoelectric material to alumina substrate. The surface finishes of the bonding surfaces for Bi 2 (Te 0·92 Se 0·08 ) 3 and alumina are Ni and Ag respectively. The bonding layer is pure Sn. The growth kinetic of intermetallic…
A 10% batch-to-batch variation in molecular weight for a low polydispersity block copolymer (BCP) used for DSA lithography could result in more than a 6% change in critical dimension (CD). Therefore, there is a strong motivation and need to develop and understand methods for fine-tuning the domain size of DSA BCPs to…
Granulated polyamide (PA6) was mechanically mixed with copper oxide and copper acetylacetonate powders and with glass fibres, then extruded and injection moulded to produce three types of composites varying in the glass fibre content. The composites were irradiated with a Nd:YAG laser ( λ = 1064 nm) and ArF excimer la…
The effects of poling state and pores on the fracture toughness of Pb(Zr0·95Ti0·05)O3 (PZT 95/5) ferroelectric ceramics were investigated. X-ray diffraction analysis and piezoelectric constant measurements reveal that the phase structures of PZT 95/5 ceramics change with the poling state, which significantly affects t…
The fluidities of commercial AZ91D and newly developed Mg–3Nd–0·2Zn–Zr (wt-%) (NZ30K) magnesium alloys were investigated at the same superheat temperature (Tpouring−Tliquidus) and temperature difference between solidus line and mould temperature (TDSM) (Tsolidus−Tmould) conditions. The results indicate that in the ran…
Atomic force microscopes have become indispensable tools for mechanical characterization of nanoscale and submicron structures. However, materials with complex geometries, such as electrospun fiber networks used for tissue scaffolds, still pose challenges due to the influence of tension and bending modulus on the resp…
Thermoelectric generators convert heat to electricity. Effective thermoelectric materials and devices have a low thermal conductivity and a high electrical conductivity. The performance of thermoelectric materials and devices is shown by a dimensionless figure of merit, ZT = S 2 σT/ K, where S is the Seebeck coefficie…
8MeV electron irradiation effects on thioglycolic acid (TGA)-capped CdTe quantum dots (QD) are discussed in this study. CdTe QDs were characterized using x-ray diffraction (XRD), transmission electron microscope (TEM) and x-ray photoelectron spectroscopy (XPS). Steady-state and time-resolved emission spectroscopy and…
Abstract The characteristic aspect of strongly correlated oxides systems is the strong coupling between the structural, electronic and magnetic properties. A small change in one property can produce a large change in another. Controllable surface tuning provides the opportunity to study how structural, electronic, and…
Boron carbide and boron suboxide low-dimensional materials with α-rhombohedral symmetry, here simply referred to as boron-rich nanomaterials, exhibit a variety of growth habits, including rodlike fibers, slablike platelets, and some intermediary structures, as confirmed by scanning electron microscopy (SEM) observatio…
Hybrid nanoparticles with complex architectures combine the properties of two distinct materials and integrate them to synergistically provide new characteristics to the assembly. In this work we demonstrate the ability to decorate the surface of a variety of micrometer-sized "core" particles with responsive microgels…
There is great interest in hybrid organic-inorganic materials such as metal-organic frameworks (MOFs). Here, we focus on [C(NH 2 ) 3 ]Cu(HCOO) 3 , a MOF with perovskite topology which crystallizes in polar space group Pna2 1 . In inorganic compounds, octahedral tilting and Jahn-Teller structural distortions are usuall…
A combined experimental and theoretical study on the incorporation of Mn in GaAs has been presented. We have successfully controlled the location of Mn atoms at GaAs(001) surfaces by changing the surface atomic geometry. While Mn atoms prefer to substitute Ga sites at a subsurface layer under the As-rich conditions, t…
A novel method for the fabrication of core/shell structured mesoporous carbon spheres with solid shell using a template method has been presented. The unique molecular nanostructures are characterized by XRD, TEM, TGA, and nitrogen adsorption/desorption measurement. The formation mechanism of the mesostructured carbon…