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Recent Studies from Australian National University Add New Data to Materials Engineering [Phase Transformation in Laser-Induced Micro-Explosion in...

July 23, 2014



Recent Studies from Australian National University Add New Data to Materials Engineering [Phase Transformation in Laser-Induced Micro-Explosion in Olivine (Fe,Mg)(2)SiO4]

By a News Reporter-Staff News Editor at Journal of Engineering -- New research on Materials Engineering is the subject of a report. According to news reporting originating from Canberra, Australia, by VerticalNews correspondents, research stated, "We show that micro-explosions generated by tightly focused single pulses of a femtosecond laser in olivine have produced change of iron valence state. Chemical and structural changes were investigated using synchrotron X-ray spectroscopy, and Raman scattering."

Our news editors obtained a quote from the research from Australian National University, "Near edge X-ray absorption fine structure (NEXAFS) spectra from laser-affected zone of olivine crystal indicate a modified chemical bonding and a possible formation of regions containing a new crystalline phases of iron. Raman scattering from the laser-affected zone regions reveals loss of crystalline order and formation of a mixture of nano-crystallites due to melting and re-solidification of olivine. These results indicate that spatial separation between ions of different mass occurs in hot, highly excited olivine."

According to the news editors, the research concluded: "The present study confirms that this mechanism may present a general pathway toward creation of novel crystalline and amorphous nano-materials using fs laser-induced confined micro-explosions."

For more information on this research see: Phase Transformation in Laser-Induced Micro-Explosion in Olivine (Fe,Mg)(2)SiO4. Advanced Engineering Materials, 2014;16(6):767-773. Advanced Engineering Materials can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany. (Wiley-Blackwell - www.wiley.com/; Advanced Engineering Materials - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1527-2648)

The news editors report that additional information may be obtained by contacting R. Buividas, Australian National University, Laser Phys Center, Res Sch Phys & Engn, Canberra, ACT 0200, Australia. Additional authors for this research include G. Gervinskas, A. Tadich, B.C.C. Cowie, V. Mizeikis, A. Vailionis, D. de Ligny, E.G. Gamaly, A.V. Rode and S. Juodkazis.

Keywords for this news article include: Canberra, Materials Engineering, Australia and New Zealand

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Engineering


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