Sentences with phrase «metal chalcogenides»

The group was the first to show that monolayers of two different types of metal chalcogenides — binary compounds of sulfur, selenium or tellurium with a more electropositive element or radical — having such different lattice constants can be grown together to form a perfectly aligned stacking bilayer.

«These include metal chalcogenides such as the mineral pentlandite, which is just as efficient as platinum and is also significantly more stable towards catalyst poisons such as sulphur,» explains Ulf - Peter Apfel.

Not exact matches

«From our theoretical perspective, the novelty in this study is that we now have a better understanding of why adding plain salt lowers the melting point for these metal - oxides and especially reduces the energy barriers of the intermediates on the way to transforming them into chalcogenides.»