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Bi(110) allotropes: (a) bulk-like (A7); (b) BP-like; (c) bulk-like after constrained optimisation; (d) BP-like after constrained optimisation; and (e) combination of structures A7 and BP. The bulk and BP-like structures are discussed in detail in Refs. 1, 9, and 12.
SEM image showing a multilayer graphene flake lifted off the HOPG substrate along with as-deposited Bi islands in the background.
XPS spectra recorded on a Bi(111) film (#1), Bi (110) nanostructures (#2), Bi (110) nanostructures exposed to L of dry air (1 s exposure – #3) and to L of air (5 days exposure – #4). Excitation energy is 600 eV. The dashed lines illustrate small peak shifts between the various spectra.
HR-TEM micrograph showing part of a typical island (exposed to L of oxygen) with atomic resolution. Inset shows magnified image of the metallic part of the island. Surface bonds and unit cell ( nm2) have been added for sake of clarity.
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