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Reports from University of Twente Describe Recent Advances in General Science (Ultrafast vapourization dynamics of laser-activated polymeric...

August 1, 2014

Reports from University of Twente Describe Recent Advances in General Science (Ultrafast vapourization dynamics of laser-activated polymeric microcapsules)

By a News Reporter-Staff News Editor at Science Letter -- Investigators discuss new findings in Science. According to news reporting originating in Enschede, Netherlands, by NewsRx journalists, research stated, "Precision control of vapourization, both in space and time, has many potential applications; however, the physical mechanisms underlying controlled boiling are not well understood. The reason is the combined microscopic length scales and ultrashort timescales associated with the initiation and subsequent dynamical behaviour of the vapour bubbles formed."

The news reporters obtained a quote from the research from the University of Twente, "Here we study the nanoseconds vapour bubble dynamics of laser-heated single oil-filled microcapsules using coupled optical and acoustic detection. Pulsed laser excitation leads to vapour formation and collapse, and a simple physical model captures the observed radial dynamics and resulting acoustic pressures. Continuous wave laser excitation leads to a sequence of vapourization/condensation cycles, the result of absorbing microcapsule fragments moving in and out of the laser beam. A model incorporating thermal diffusion from the capsule shell into the oil core and surrounding water reveals the mechanisms behind the onset of vapourization."

According to the news reporters, the research concluded: "Excellent agreement is observed between the modelled dynamics and experiment."

For more information on this research see: Ultrafast vapourization dynamics of laser-activated polymeric microcapsules. Nature Communications, 2014;5():3671. (Nature Publishing Group -; Nature Communications -

Our news correspondents report that additional information may be obtained by contacting G. Lajoinie, Physics of Fluids Group, MESA+ Institute for Nanotechnology and MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, PO Box 217, 7500 AE Enschede, Netherlands. Additional authors for this research include E. Gelderblom, C. Chlon, M. Bohmer, W. Steenbergen, N. de Jong, S. Manohar and M. Versluis (see also Science).

Keywords for this news article include: Enschede, Netherlands, Europe, Science.

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

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Source: Science Letter

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