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Study Findings from Pohang University of Science and Technology Broaden Understanding of Applied Physical Science

January 28, 2014

By a News Reporter-Staff News Editor at Physics Week -- Research findings on Applied Physical Science are discussed in a new report. According to news reporting originating from Pohang, South Korea, by VerticalNews correspondents, research stated, "Peculiarities of quantitative hard x-ray phase contrast imaging of micropipes in SiC are discussed. The micropipe is assumed as a hollow cylinder with an elliptical cross section."

Our news editors obtained a quote from the research from the Pohang University of Science and Technology, "The major and minor diameters can be restored using the least square fitting procedure by comparing the experimental data, i.e. the profile across the micropipe axis, with those calculated based on phase contrast theory. It is shown that one projection image gives an information which does not allow a complete determination of the elliptical cross section, if an orientation of micropipe is not known. Another problem is a weak accuracy in estimating the diameters, partly because of using pink synchrotron radiation, which is necessary because a monochromatic beam intensity is not sufficient to reveal the weak contrast from a very small object. The general problems of accuracy in estimating the two diameters using the least square procedure are discussed."

According to the news editors, the research concluded: "Two experimental examples are considered to demonstrate small as well as modest accuracies in estimating the diameters."

For more information on this research see: Quantitative hard x-ray phase contrast imaging of micropipes in SiC. AIP Advances, 2013;3(12):99-109. AIP Advances can be contacted at: Amer Inst Physics, Circulation & Fulfillment Div, 2 Huntington Quadrangle, Ste 1 N O 1, Melville, NY 11747-4501, USA. (American Institute of Physics -; AIP Advances -

The news editors report that additional information may be obtained by contacting V.G. Kohn, Pohang University of Science & Technology, Dept. of Mat Sci & Engn, Pohang 790784, South Korea. Additional authors for this research include T.S. Argunova and J.H. Je.

Keywords for this news article include: Asia, Pohang, South Korea, Applied Physical Science

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Source: Physics Week

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