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首页> 外文期刊>Acta biomaterialia >Nanostructure, dissolution and morphology characteristics of microcidal silver films deposited by magnetron sputtering.
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Nanostructure, dissolution and morphology characteristics of microcidal silver films deposited by magnetron sputtering.

机译：磁控溅射沉积的杀菌银膜的纳米结构，溶解和形貌特征

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Novel microcidal silver films for burn dressings have been produced by magnetron sputtering. The nanostructure and dissolution characteristics of these films exhibiting antimicrobial behavior were studied as a function of the process conditions, namely, gas composition, gas pressure and input power, using transmission electron microscopy (TEM), high-resolution scanning electron microscopy, X-ray photoelectron spectroscopy (XPS) and resistivity. TEM revealed that bioactive films were nanocrystalline, with a grain size of the order of 15nm and the presence of twins. Surface morphology studies before and after dissolution suggested that bioactive films released silver at therapeutic levels in the form of nanoparticles or grains. Chemical species identification with XPS showed that the biologically active films were metallic in nature. The importance of oxygen in the sputtering environment, the resultant nanostructure and presence of twins are discussed to explain the unique antimicrobial properties of these silver films.
机译：通过磁控溅射制备了用于烧伤敷料的新型杀微生物银膜。使用透射电子显微镜（TEM），高分辨率扫描电子显微镜，X射线对这些表现出抗菌性能的薄膜的纳米结构和溶解特性随工艺条件（即气体组成，气压和输入功率）的变化进行了研究。光电子能谱（XPS）和电阻率。 TEM显示，生物活性膜是纳米晶体，晶粒大小为15nm左右，并且存在孪晶。溶解前后的表面形态研究表明，生物活性膜以纳米颗粒或颗粒的形式释放了治疗水平的银。用XPS进行化学物种鉴定表明，生物活性膜本质上是金属的。讨论了氧气在溅射环境中的重要性，所得纳米结构和孪晶的存在，以解释这些银膜的独特抗菌性能。

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