X-ray Imaging techniques for solid-state phase transitions
From: Sven Lidin
Posted At: Friday, 30 May 2014 10:00 AM
Posted To: Science: Current Issue
Conversation: [Perspective] Mapping bond orientations with polarized x-rays
Subject: [Perspective] Mapping bond orientations with polarized x-rays
Regions of bond order and disorder are revealed [Also see Report by Palmer et al.] Author: Sven Lidin
View article...<http://www.sciencemag.org/content/344/6187/969.abstract?rss=1>
The polarizing optical microscope has been used since the 19th century to study the structural anisotropy of materials, based on the phenomenon of optical birefringence. In contrast, the phenomenon of x-ray birefringence has been demonstrated only recently and has been shown to be a sensitive probe of the orientational properties of individual molecules and/or bonds in anisotropic solids. Here, we report a technique—x-ray birefringence imaging (XBI)—that enables spatially resolved mapping of x-ray birefringence of materials, representing the x-ray analog of the polarizing optical microscope. Our results demonstrate the utility and potential of XBI as a sensitive technique for imaging the local orientational properties of anisotropic materials, including characterization of changes in molecular orientational ordering associated with solid-state phase transitions and identification of the size, spatial distribution, and temperature dependence of domain structures.
From: Benjamin A. Palmer
Posted At: Friday, 30 May 2014 10:00 AM
Posted To: Science: Current Issue
Conversation: [Report] X-ray birefringence imaging
Subject: [Report] X-ray birefringence imaging
An x-ray birefringence imaging technique, analogous to polarized optical microscopy, can detect bond orientation in crystals [Also see Perspective by Lidin] Authors: Benjamin A. Palmer, Gregory R. Edwards-Gau, Benson M. Kariuki, Kenneth D. M. Harris, Igor P. Dolbnya, Stephen P. Collins
View article...<http://www.sciencemag.org/content/344/6187/1013.summary?rss=1>
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