First silicate mineral with triple tetrahedral layer

Ferroelectricity driven by twisting of silicate tetrahedral chains.

Electric Triple Layer Theory

I correct hundred years old theory of charge distribution within an electrolytic solution surrounded by charged walls. Existing theory always implies excess amount of counter-ions (having polarity unlike walls) everywhere in the solution domain; so it cannot handle a solution that possesses excess ions of other type (co-ions) or is electrically neutral as a whole. Here, in the corrected distrib...

Synthesis and characterization of novel triple-layer nanoparticles with multimodal potential-first results

Background. It is becoming increasingly clear that no single imaging modality carries all of the properties necessary for comprehensive quantitative diagnostics with high spatial and temporal resolution, high sensitivity of detection, and tomographic capability. Therefore, in order to collect truly thorough information through imaging, one needs to employ a multimodality approach. With this in ...

Experimental coarsening of antiphase domains in a silicate mineral.

Combined annealing experiments and observations by transmission electron microscopy show that in natural pigeonite crystals antiphase domains coarsen approximately according to a rate law in which the tenth power of the average domain size is proportional to time. This result suggests that certain cations (possibly Ca(2+)) were segregated preferentially onto the antiphase boundaries. The domain...

"Majorite" and "silicate perovskite" mineral compositions in xenoliths from Malaita.

Mineral Compositions in Xenoliths from Malaita The report by Collerson et al. (1) of transition zone and lower mantle phases in mantle-derived material from alnöite pipes on Malaita, Solomon Islands, is highly significant in view of the rarity of such natural assemblages. Malaita is part of the obducted southern margin of the Ontong Java Plateau, an area of overthickened oceanic crust (2–7) tha...