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Atomic Force Microscopy

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Updated: Jan 12, 2026

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

Published on: June 27, 2013

频率依赖的细胞微观学与金字塔式原子力显微镜探针探测器.

Erika A Ding¹, Sanjay Kumar²

¹Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, California.

Biophysical journal

|October 31, 2025

概括

原子力显微镜 (AFM) 现在可以使用标准探针测量细胞粘性弹性. 这种新方法简化了生物研究的动态机械性质分析.

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科学领域:

生物物理学的生物物理.
细胞生物学细胞生物学
材料科学材料科学材料科学

背景情况:

原子力显微镜 (AFM) 通常使用强力缩曲线测量细胞弹性特性.
细胞表现出时间依赖的应激放松和频率依赖的机械特性,这对生物功能至关重要.
目前的AFM微风学通常需要专门的,昂贵的探头.

研究的目的:

开发一个框架,用于用于振荡微观学标准形金字塔AFM探头的使用.
为了使活细胞的动态机械性质的可访问测量.
为了验证一种新的方法来提取频率依赖的质性质.

主要方法:

从AFM数据中提取rheological模块的表达式的导出.
探索振荡微观学的实验校准和参数优化.
使用阿加罗斯凝标准和在培养细胞上的机械测量进行验证.

主要成果:

开发了一种形式主义,使标准的AFM探针能够用于振荡微观学.
该方法使用水凝标准进行了验证.
用细胞骨抑制剂治疗的细胞的风湿学变化得到了成功测量.

结论:

标准的AFM探头可以有效地用于振荡微观神经学.
这种方法简化了动态细胞力学研究.
该方法提供了关于细胞骨网络对细胞类风湿学的贡献的见解.