Supplement 21, Part 2, Parasite-Subject Catalogue, Parasites: Protozoa

United States Department of Agriculture, Bureau of Animal Industr

Supplement 21, Part 4, Parasite-Subject Catalogue, Parasites: Nematoda and Acanthocephala

United States Department of Agriculture, Bureau of Animal Industr

d state contribution to STM structure of van der Waals surfaces TaSe2, Mo0.5W0.5Se2 and relevance for catalysis

Scanning tunneling microscopy studies of 2H TaSe2 in air show both the chalcogen surface atoms and the second layer tantalum atoms. The charge density peaks of the latter are shifted from their supposed atom core positions by approximately 0.8 in the [110] direction away from the nearest Se atom. The appearance of the metal atom charge density near the surface on van der Waals surfaces explains why photocatalysis is possible with transition metal layer dichalcogenides despite the apparently saturated surfaces. Buckling of the surface layer of Mo0.5W0.5Se2 is observe