Materials Literature
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Polarization and dielectric constant for 2D media Maxwell displacement current method monolayers viewed as polar liquid crystals dielectric relaxation phenomena chiral phase separation nonlinear effects thermally-stimulated current electronic properties at MIM interfaces.
We have investigated Ti/Au (30/50 nm) ohmic contacts to The samples are annealed at temperatures of 300 and 500°C for 60 s in a flowing atmosphere. Current-voltage measurements show that the as-deposited sample is ohmic with a specific contact resistance of However, annealing of the sample at 300°C results in much bet…
Silicon-29 and carbon-13 NMR spectroscopy is employed to determine the structures of stable five- and six-coordinated organosilicon complexes formed by the addition of certain aliphatic acid carbohydrates (such as gluconic acid, glucoheptonic acid and saccharic acid) to aqueous alkaline silicate solutions.
Abstract The principles of photochemistry continue to fuel progress in luminescent sensors and photonic switches. Examples of sensors based on photoinduced electron transfer (PET) are discussed, including those which form the basis of successful systems used in physiology and medicine. More complex formats usually inv…
To control the growth of primary tumors effectively with systemic chemotherapy, we recently developed intravenously administered small-sized magnetic liposomes as an anticancer drug carrier. We previously reported that intravenously administered magnetic liposomes with incorporated adriamycin (magnetic ADR liposomes)…
A new family of discotic liquid crystals, potentially electron carriers, has been synthesised, some members of which exhibit a particularly rich thermotropic behaviour.
Reaction of an aqueous solution of Na2bpdc (H2bpdc = biphenyldicarboxylic acid) with an organic solution of Co(NO3)2via a diffusion route leads to a pillared three-dimensional structure in which the heterometallic sodium(I)–cobalt(II) trilayers are connected by carboxylate groups of the pillared ligand bpdc2−.
Combined interaction of triple hydrogen bonding, dipolar pi-pi aggregation and micro-segregation in a melamine-barbituric acid dye assembly leads to a columnar mesophase which could be characterized by optical polarising microscopy, differential scanning calorimetry and X-ray diffraction.
The structural stability and oxygen permeation properties of Sr 3 − x La x Fe 2 − y Co y O 7 − δ with 0 ⩽ x ⩽ 0.3 and 0 ⩽ y ⩽ 1.0 have been studied at high temperature ( 800 ⩽ T ⩽ 900 ° C ) and in the oxygen partial pressure range 10 − 5 ⩽ p O 2 ⩽ 0.21 atm. These phases have a perovskite-related intergrowth structure…
We report high pressure Raman studies on as-prepared, purified, and solubilized single-walled and aligned multi-walled carbon nanotubes. The pressure dependence of radial (R) and tangential (T) vibrational bands in these samples is measured and compared with the results from other studies. In single-walled nanotubes,…
A bis-urea macrocycle 1 was synthesized and shown to form extended nanotubular columns by X-ray crystallography.
We have investigated the electronic and magnetic structures of Sr2FeMoO6 employing site-specific direct probes, namely x-ray absorption spectroscopy with linearly and circularly polarized photons. In contrast to some previous suggestions, the results clearly establish that Fe is in the formal trivalent state in this c…
Gold surfaces were first treated in an alkanethiol solution to form self-assembled monolayers (SAMs). The thiolated Au surface was then subjected to Ar plasma pretreatment, followed by air exposure and UV-induced graft polymerization of poly(ethylene glycol) methacrylate (PEGMA) macromonomer. In comparison with the 3-…
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Polyaniline (PANI) has been studied for some years in order to protect mild steels against corrosion in the absence of inorganic conversion layers. During the electropolymerization of PANI film, iron is passivated; the subsequent protection is dependent on the nature of this passive layer, and PANI acts as a stabilize…
Adsorption behaviour and CO oxidation activity of TiO2- and ZrO2-supported gold catalysts, prepared by adsorption of gold colloids on the supports, have been investigated by pulse thermal analysis and diffuse reflectance FTIR spectroscopy. Structural investigations using transmission electron microscopy, X-ray diffrac…
Finite-time control policies are common in batch and semi-batch operations. A novel approach is proposed that quantifies the impact of parameter and control implementation inaccuracies on the performance of such control policies. This information can be used to decide whether more experiments are needed to produce par…
Prediction of yarn properties from fibre properties and process parameters is a well-researched topic. For a number of years, mechanistic and statistical models have primarily been used to tackle the problem. Over the last ten years, neural networks have been used in increasing numbers for this purpose. However, a com…
Voltage modulated scanning force microscopy in contact mode or piezoresponse scanning force microscopy is now turning into an established technique for imaging ferroelectric domains in ferroelectric thin films. The quantities measured, however, are the amplitude and phase of a locally induced piezoelectric strain, and…
Preface Part 1. General Papers Surface effects on intrinsic thin-film stresses, R. C. Cammarata Adhesion properties of functionally gradient diamond-like carbon nanocomposite films, R. J. Narayan Adhesion improvement of magnetron-sputtered amorphous carbon coating on cemented carbide, S. Zhang and X. L. Bui Characteri…