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A coherent synchrotron X-ray microradiology investigation of bubble and droplet coalescence.

Weon BM, Je JH, Hwu Y, Margaritondo G - J Synchrotron Radiat (2008)

Bottom Line: A quantitative application of microradiology with coherent X-rays to the real-time study of microbubble and microdroplet coalescence phenomena, with specific emphasis on the size relations in three-body events, is presented.The results illustrate the remarkable effectiveness of coherent X-ray imaging in delineating interfaces in multiphase systems, in accurately measuring their geometric properties and in monitoring their dynamics.

View Article: PubMed Central - HTML - PubMed

Affiliation: X-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea.

ABSTRACT
A quantitative application of microradiology with coherent X-rays to the real-time study of microbubble and microdroplet coalescence phenomena, with specific emphasis on the size relations in three-body events, is presented. The results illustrate the remarkable effectiveness of coherent X-ray imaging in delineating interfaces in multiphase systems, in accurately measuring their geometric properties and in monitoring their dynamics.

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Top: a three-bubble coalescence event. Bottom: air–water interfaces for bubbles in a capillary tube.
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fig3: Top: a three-bubble coalescence event. Bottom: air–water interfaces for bubbles in a capillary tube.

Mentions: Phase-contrast microradiography was implemented with un­monochromatized coherent synchrotron X-rays in the photon energy range 10–60 keV (from the PLS 7B2 beamline in Pohang, Korea). Figs. 2 ▶ and 3 ▶ illustrate interfaces delineated with remarkable sharpness. Specifically, Fig. 2 ▶ shows two-particle coalescence events for gas bubbles and mercury droplets, and Fig. 3 ▶ shows a three-bubble coalescence event as well as the sharp air–water interfaces of bubbles in a capillary tube.


A coherent synchrotron X-ray microradiology investigation of bubble and droplet coalescence.

Weon BM, Je JH, Hwu Y, Margaritondo G - J Synchrotron Radiat (2008)

Top: a three-bubble coalescence event. Bottom: air–water interfaces for bubbles in a capillary tube.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2573953&req=5

fig3: Top: a three-bubble coalescence event. Bottom: air–water interfaces for bubbles in a capillary tube.
Mentions: Phase-contrast microradiography was implemented with un­monochromatized coherent synchrotron X-rays in the photon energy range 10–60 keV (from the PLS 7B2 beamline in Pohang, Korea). Figs. 2 ▶ and 3 ▶ illustrate interfaces delineated with remarkable sharpness. Specifically, Fig. 2 ▶ shows two-particle coalescence events for gas bubbles and mercury droplets, and Fig. 3 ▶ shows a three-bubble coalescence event as well as the sharp air–water interfaces of bubbles in a capillary tube.

Bottom Line: A quantitative application of microradiology with coherent X-rays to the real-time study of microbubble and microdroplet coalescence phenomena, with specific emphasis on the size relations in three-body events, is presented.The results illustrate the remarkable effectiveness of coherent X-ray imaging in delineating interfaces in multiphase systems, in accurately measuring their geometric properties and in monitoring their dynamics.

View Article: PubMed Central - HTML - PubMed

Affiliation: X-ray Imaging Center, Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea.

ABSTRACT
A quantitative application of microradiology with coherent X-rays to the real-time study of microbubble and microdroplet coalescence phenomena, with specific emphasis on the size relations in three-body events, is presented. The results illustrate the remarkable effectiveness of coherent X-ray imaging in delineating interfaces in multiphase systems, in accurately measuring their geometric properties and in monitoring their dynamics.

Show MeSH