News Column

Study Data from Technical University of Denmark Provide New Insights into Materials Science and Physical Chemistry

June 13, 2014

By a News Reporter-Staff News Editor at Science Letter -- Researchers detail new data in Science. According to news reporting originating in Lyngby, Denmark, by NewsRx journalists, research stated, "We study water drop roll-off at superhydrophobic surfaces with different surface patterns. Superhydrophobic microcavity surfaces were fabricated in silicon and coated with 1H,1H,2H,2H-perfluorodecyl-trichlorosilane (FDTS)."

The news reporters obtained a quote from the research from the Technical University of Denmark, "For the more irregular surface patterns, the observed increase in roll-off angles is found to be caused by a decrease of the receding contact angle, which in turn is caused by an increase of the triple phase contact line of the drops for those more irregular surfaces. To understand the observation, we propose to treat the microdrops as rigid bodies and apply a torque balance between the torque exerted by the projected gravity force and the torque exerted by the adhesion force acting along the triple line on the receding side of the drop."

According to the news reporters, the research concluded: "This simple model provides a proper order of magnitude estimate of the measured effects."

For more information on this research see: Structure Irregularity Impedes Drop Roll-Off at Superhydrophobic Surfaces. Langmuir, 2014;30(17):5041-5045. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Langmuir -

Our news correspondents report that additional information may be obtained by contacting S.T. Larsen, Technical University of Denmark, Dept. of Micro & Nanotechnol, DTU Nanotech, DK-2800 Lyngby, Denmark. Additional authors for this research include N.K. Andersen, E. Sogaard and R. Taboryski (see also Science).

Keywords for this news article include: Lyngby, Europe, Denmark, Science

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Source: Science Letter

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