An investigation into bacterial attachment to an elastomeric superhydrophobic surface prepared via aerosol assisted deposition
An investigation into bacterial attachment to an elastomeric superhydrophobic surface prepared via aerosol assisted deposition
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DOI：
10.1016/j.tsf.2011.01.282
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发表时间：
2011-03-31
期刊：
影响因子：
2.1
通讯作者：
Parkin, Ivan P.
中科院分区：
文献类型：
--
作者：
Crick, Colin R.;Ismail, Salim;Parkin, Ivan P.
细菌附着高度依赖于表面的微观结构。例如，一些粗糙表面提供适合细菌粘附的凹槽。具有Cassie-Baxter润湿机制的超疏水表面显示出防止细菌与表面附着点之间的接触。本研究中使用的表面是一种高度粗糙的薄膜，由硅橡胶弹性体通过气溶胶辅助化学气相沉积（AACVD）工艺制成。该膜具有平均为165的水接触角，非常低的滑动角，并且能够复制莲花效应。通过浸没在细菌悬浮液中测试细菌（大肠杆菌和耐甲氧西林金黄色葡萄球菌）粘附于该表面的能力。相对于普通玻璃和平坦弹性体膜的对照表面，超疏水弹性体表面减少了测试的细菌的附着。在没有化学品的外部作用的情况下，细菌粘附的减少使用AACVD沉积的弹性体表面在生物医学和餐饮业中具有可能的应用。这种细菌粘附的渐进式研究是在AACVD制备的表面上进行的，并呈现了光滑和高度粗糙的弹性体表面的粘附结果。(C)2011 Elsevier B. V.保留所有权利。
Bacterial attachment is highly dependent on a surfaces microstructure. For example, some rough surfaces provide grooves suitable for bacterial adhesion. Superhydrophobic surfaces with a Cassie-Baxter wetting mechanism are shown to prevent contact between a bacterium and surface attachment points. The surface used in this study is a highly rough thin film made from a silicone elastomer via an aerosol assisted chemical vapour deposition (AACVD) process. The films had water contact angles averaging 165, a very low slip angle, and were capable of duplicating the Lotus effect. The ability of bacteria (Escherichia coli and Methicillin-resistant Staphylococcus aureus) to adhere to this surface was tested by submersion in a bacterial suspension. The superhydrophobic elastomer surfaces reduced the attachment of the bacteria tested, relative to the control surfaces of plain glass, and flat elastomeric films. The reduction in bacterial adhesion, without the external action of chemicals, gives the elastomer surface deposited with AACVD possible applications in biomedical and catering industries. This progressive study of bacterial adhesion is carried out on an AACVD prepared surface and presents adhesion results from both smooth and highly roughened elastomeric surfaces. (C) 2011 Elsevier B.V. All rights reserved.