Materials Literature
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Cadmium telluride quantum dots (Cdte QDs) have received significant attention in biomedical research because of their potential in disease diagnosis and drug delivery. In this study, we have investigated the interaction mechanism and synergistic effect of 3-mercaptopropionic acid-capped Cdte QDs with the anti-cancer d…
This paper extends a previous application of classical molecular dynamics to the computation of the heat of transport, Q(*), of Au atoms in a model of solid gold made at several elevated temperatures above the Debye temperature (Grout and Lidiard 2008 J. Phys.: Condens. Matter 20 425201). That previous paper examined…
Jute fabrics (hessian cloth) reinforced thermo-set composites were prepared by using urethane acrylate oligomer solutions (50–90% by weight) followed by UV radiation. It was found that 70% oligomer-treated jute fabrics performed the best results. The monomer hexanediol diacrylate (HDDA) was used as a coupling agent fo…
Abstract A novel method of making water‐based amorphous carbon nanotubes (ACNTs) for advanced polymer nanocomposites is presented. In this approach, sodium dodecyl sulfate (SDS) is introduced onto the amorphous carbon nanotubes to improve the solubility in water and the dispersion in polyvinyl alcohol [PVA] matrix. As…
In this paper, we analyze periodic disk-on-pillar nanoarrays as a platform for surface-enhanced Raman spectroscopy measurements. The nanostructure is a two-dimensional grating of silicon pillars covered by thin layers of silica and silver. The system supports both localized surface plasmons and surface plasmon polarit…
2-Aminopyridinium maleate (2APM) is a recently discovered organic acid-base complex that crystallizes in a non-centrosymmetric space group Pc and hence has a nonzero second-order optical susceptibility. In 2APM the cation (aminopyridinium ion) is connected to the anion (maleate ion) through hydrogen bonds (N1-H10–O2 a…
Monatomic chains of molybdenum encapsulated in single-walled carbon nanotubes (CNTs) of different chiralities are investigated using density functional theory. We determine the optimal size of the CNT for encapsulating a single atomic wire, as well as the most stable atomic arrangement adopted by the wire. We also stu…
Abstract Fillers are modified with the purpose of increasing their interactions with polymer matrices; however it is necessary to determine the impact that those modifications have on the composite performance and morphology. In this work, the strength of the chemical interactions between silica with different chemica…
We present direct link between the transport properties of Co2MnSi and Co2FeMnSi Heusler based current-perpendicular-to-plane spin valves (CPP-SVs) and interface atomic structures resolved by aberration-corrected electron microscopy. The structure of the Co2FeMnSi electrodes is L21 but their interface with the CoSi sp…
We report PCT measurements, reaction paths, and thermodynamic modeling of prolonged pressure cycling of Li 3 N in mixed hydrogen/nitrogen atmospheres. For 20 mol % N 2 in H 2 mixtures, we observe a significant enhancement of the reversible capacity (from ∼3 to ∼10 wt % H after 516 cycles at 528 K) as compared with cyc…
Local structure of NdFeAsO(1-x)F(x) (x = 0.0, 0.05, 0.15 and 0.18) high temperature iron-pnictide superconductor system is studied using arsenic K-edge extended x-ray absorption fine structure measurements as a function of temperature. Fe-As bond length shows only a weak temperature and F-substitution dependence, cons…
Neutron spin-flip scattering observations of a resonance in the superconducting state is often taken as evidence of an unconventional superconducting state in which the gap changes sign $\ensuremath{\Delta}(k+Q)=\ensuremath{-}\ensuremath{\Delta}(k)$ for momentum transfers $Q$ which play an important role in the pairin…
Taking advantage of the relatively low temperature crystallization and high orientation of thin films of Pb0.8La0.1Ca0.1Ti0.975O3 (PLCT), growth of a highly (100)-oriented PLCT/Pb(Nb0.01Zr0.2Ti0.8)O3 (PNZT) multilayer film on a Pt/Ti/SiO2/Si substrate is achieved at a temperature as low as 450 °C. The interfacial diff…
We present an extensive study on magnetic and transport properties of La 0.85 Sr 0.15 CoO 3 single crystals grown by a float zone method to address the issue of phase separation versus spin-glass (SG) behavior. The dc magnetization study reveals a kink in field-cooled magnetization, and the peak in the zero-field-cool…
We present the analysis of linewidth roughness (LWR) in nanowire-mask-based graphene nanoribbons (GNRs) and evaluate its impact on the device performance. The data show that the LWR amplitude decreases with the GNR width, possibly due to the etching undercut near the edge of a nanowire-mask. We further discuss the lar…
Time-dependent isothermal dielectric measurements were carried out deeply in the glassy state on two very important saccharides: sucrose and trehalose. In both compounds two prominent secondary relaxation processes were identified. The faster one is an inherent feature of the whole family of carbohydrates. The slower…
Abstract A novel phosphorus‐containing poly (ethylene terephthalate) (PET) copolyester/nano‐SiO 2 composite (PET‐ co ‐DDP/SiO 2 ) was synthesized by in situ polycondensation of terephthalic acid (TPA), ethylene glycol (EG), [(6‐oxide‐6H‐dibenz[c,e] [1,2]oxaphosphorin‐6‐yl)‐methyl]‐butanedioic acid (DDP), and nano‐SiO…
Abstract Hydrogen degradation represents a problem of major technological concern in the structural integrity of prestressed concrete structures in which cold-drawn wires are the main structural component and can suffer the deleterious effect of hydrogen, with the subsequent risk of catastrophic failure. This paper pr…
Abstract Ricinus communis (RC) oil‐based materials are currently receiving increasing attention because of economic and environmental concerns. In the present work, RC oil—a natural triol has been utilized for the development of an advanced polymeric material—poly(urethane‐ricinoleamide) (PUR) through very simple synt…
We present a method to determine the effective parameters of a periodic structure with small spacing. This technique is analogous to the averaged boundary condition method applied to planar periodic structures. The effective permittivity of a structure from parallel wires with dielectric and magnetic coating was obtai…