Initial corrosion observed on the atomic scale
Article Abstract:
A report on atomic-scale observations of the initial stages of corrosion of a Cu3Au(111) single crystal alloy within a sulphuric acid solution is illustrated. This combined structural and chemical in situ analysis of the growth of ultrathin passivation layers helps to understand the initial electrochemical corrosion of alloys on a microscopic level.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Aerodynamics of the hovering hummingbird
Article Abstract:
Measurements of the wake of hovering rufous hummingbirds obtained with digital particle image velocimetry that show force asymmetry is provided. The results revealed that hummingbirds produce 75% of their weight support during the downstroke and only 25% during the upstroke.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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