Exciting experimental technique to investigate in-situ surface structure. Seems playing a similar role to one of Nobel Prize for study of transient chemical reactions.
Understanding the interaction between surfaces and their surroundings is crucial in many materials-science fields, such as catalysis, corrosion, and thin-film electronics, but existing characterization methods have not been capable of fully determining the structure of surfaces during dynamic processes, such as catalytic reactions, in a reasonable time frame. We demonstrate an x-ray-diffraction–based characterization method that uses high-energy photons (85 kiloelectron volts) to provide unexpected gains in data acquisition speed by several orders of magnitude and enables structural determinations of surfaces on time scales suitable for in situ studies. We illustrate the potential of high-energy surface x-ray diffraction by determining the structure of a palladium surface in situ during catalytic carbon monoxide oxidation and follow dynamic restructuring of the surface with subsecond time resolution.
From: J. Gustafson
Posted At: Friday, 14 February 2014 11:00 AM
Posted To: Science: Current Issue
Conversation: [Report] High-Energy Surface X-ray Diffraction for Fast Surface Structure Determination
Subject: [Report] High-Energy Surface X-ray Diffraction for Fast Surface Structure Determination
High-energy x-rays incident at grazing angles allow for rapid collection of surface diffraction beams. [Also see Perspective by Nicklin] Authors: J. Gustafson, M. Shipilin, C. Zhang, A. Stierle, U. Hejral, U. Ruett, O. Gutowski, P.-A. Carlsson, M. Skoglundh, E. Lundgren
View article...<http://www.sciencemag.org/content/343/6172/758.summary?rss=1>
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