News Column

Researchers from Peking University Detail Findings in Materials Science and Physical Chemistry

June 27, 2014

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Science have been published. According to news reporting originating in Beijing, People's Republic of China, by NewsRx journalists, research stated, "Titanium oxide is a biocompatible material that supports vesicle adhesion. Depending on experimental parameters, adsorbed vesicles remain intact or rupture spontaneously."

The news reporters obtained a quote from the research from Peking University, "Vesicle rupture has been attributed to electrostatic attraction between vesicles and titanium oxide, although the relative contribution of various interfacial forces remains to be clarified. Herein, we investigated the influence of vesicle surface charge on vesicle adsorption onto titanium oxide and observed that electrostatic attraction is insufficient for vesicle rupture. Following this line of evidence, a continuum model based on the DLVO forces and a non-DLVO hydration force was applied to investigate the role of different interfacial forces in modulating the lipid-substrate interaction. Within an experimentally significant range of conditions, the model shows that the magnitude of the repulsive hydration force strongly influences the behavior of adsorbed vesicles, thereby supporting that the hydration force makes a strong contribution to the fate of adsorbed vesicles on titanium oxide."

According to the news reporters, the research concluded: "The findings are consistent with literature reports concerning phospholipid assemblies on solid supports and nanoparticles and underscore the importance of the hydration force in influencing the behavior of phospholipid films on hydrophilic surfaces."

For more information on this research see: Contribution of the Hydration Force to Vesicle Adhesion on Titanium Oxide. Langmuir, 2014;30(19):5368-5372. 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 J.A. Jackman, Peking University, Sch Life Sci, Beijing 100871, People's Republic of China. Additional authors for this research include G.H. Zan, Z.L. Zhao and N.J. Cho (see also Science).

Keywords for this news article include: Asia, Beijing, Science, Titanium, Light Metals, People's Republic of China

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Source: Science Letter

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