首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >AN ATOMIC FORCE MICROSCOPY INDENTATION STUDY OF BIOMATERIAL PROPERTIES
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AN ATOMIC FORCE MICROSCOPY INDENTATION STUDY OF BIOMATERIAL PROPERTIES

机译:生物材料的原子力显微镜鉴定

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Atomic force microscopy (AFM) is a powerful and increasingly common modality of biomechanical investigation, including imaging, force spectroscopy, and microrheology. AFM indentation of biomaterials requires use of a contact model for data interpretation and material property extraction, and a large segment of the scientific community uses the Hertz model or a close relative for small-scale indentation of thin, soft materials in high strain applications. We present experimental results and analyticalumerical modeling which lead to two main conclusions: (ⅰ) Hertzian mechanics are useful in a surprisingly large parameter range, including scenarios in which the underlying assumptions are seemingly violated, and (ⅱ) the Hertz solution serves as a useful base from which power-series type solutions can be derived for a variety of non-Hertzian effects.
机译:原子力显微镜(AFM)是一种强大且日益普遍的生物力学研究手段,包括成像,力谱和微观流变学。生物材料的AFM压痕需要使用接触模型进行数据解释和材料特性提取,科学界的很大一部分人都使用Hertz模型或近亲来在高应变应用中对薄而柔软的材料进行小规模压痕。我们提供的实验结果和分析/数值模型得出两个主要结论:(ⅰ)赫兹力学在令人惊讶的大参数范围内有用,包括可能违反基本假设的场景,以及(ⅱ)赫兹解用作一个有用的基础,可以从中得出幂级类型的解决方案,以解决各种非赫兹效应。

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