Dynamic polarisation

Van Caillie, C., Amos, R. D., 1998, Static and Dynamic Polarisabilities, Cauchy Coefficients and Their Anisotropies A Comparison of Standard Methods , Chem. Phys. Lett., 291, 71. 

With so many uncertainties, it is hardly surprising that the difficulties inherent in a successful application of the diffusion equation (or molecular pair analysis) to recombination probability experiments are very considerable. Chemically induced dynamic polarisation (Sect. 4) is a fairly new technique which may assist in the study of recombination of radicals following their diffusive separation from the solvent cage. 

The first term represents the usual mechanism for radiative capture, while the second results from the polarisation mechanism. The ratio r/ of the partial cross sections of the two mechanisms of capture is approximately p 4 arf(w) 2 jir2R3f, where Rf is the radius of the final state orbit of the electron. Within a giant resonance, the dipole dynamical polarisability is mainly determined by its imaginary part Jmad(oj) = cct (u )/4-k, where cr7(co) is the photoabsorption cross-section of the cluster. 

Polarised Neutron Scattering by Dynamic Polarised Targets.167... 

Steel PANI Cyclic voltammetry Potentio dynamic polarisation. EiS and monitoring OCP in 3% NaCl The corrosion rate of PANi-coated steel is 35 times lower than that of uncoated steel. ... 

Steel Cyclic voltammetry Potentio dynamic polarisation in 0.2 M H SO The corrosion protection ability of PANl increases with the increase of the thickness. [23]... 

Steel Oxidative polymerisation Potentio dynamic polarisation in 3.5% NaCl The corrosion current on steel coated by PANl is better than uncoated steel. [27]... 

Steel Cyclic voltammetry Tafel polarisation in 0.1 MHCl EIS in 0.5 M NaCl, 0.1 MHCl Potentio dynamic polarisation in 0.5 M H SO All corrosion tests show the worst performance of PANl single coating with respect to the single PPy coating, PANl/PPy and PPy/PANl bi-layer coatings. [29]... 

Steel Cyclic voltammetry Potentio dynamic polarisation and EIS in 0.5MNaCl PANl acts as a worse protective layer than PoPD on steel against pitting corrosion. [30]... 

PPy ZnO Steel Galvanostatic deposition Potentio dynamic polarisation, monitoring OCP, and EiS in 3.5% NaCl PPy+ZnO coating with 10 wt.% of ZnO relative to PPy has better anticorrosion properties than the pure PPy coating. [31]... 

PANl TiO A1 alloy aa2024t3 Potentiostatic deposition Potentio dynamic polarisation in 5 mM NaCl and 0.1 MNa SO The coating containing TiO nanoparticles protects the substrate against the corrosion better than pure PAN and coatings based on PAN containing ZrO particles. [49]... 

TiO Steel Oxidative polymeri- sation Potentio dynamic polarisation in 3.5% NaCl The corrosion current of PANl-i-TiO coatings on steel is better than the single component system (pure PANI or nano-TiO ). The corrosion protection property of PANl-i-TiO coatings depends on TiO content and it is better when TiO / aniline weight ratio is 0.05. [27]... 

PANI CNTs Steel Potentiostatic deposition Potentio dynamic polarisation in 3% NaCl The corrosion rate of steel coated by PANi-i-CNTs coating is better than both on uncoated and on PANi-coated steel. [76]... 

CNTs Steel EPD Potentio dynamic polarisation in 3.5% NaCl PANi-tCNTs nanocomposite coating shows a more positive corrosion potential than that PAN coating obtained in the same deposition conditions. ... 

Dynamic infrared linear polarised spectra of thermoplastic polyester urethane and nylon-6 films were recorded under a varying sinusoidal strain. Dichroic spectra were calculated from the dynamic polarised spectra. The large bipolar bands in the dichroic in-phase spectra, caused by large frequency shifts of the original monopolar absorption bands, were ascribed to hydrogen bonds. 29 refs. 

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