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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Multitool Platform for Morphology and Nanomechanical Characterization of Biological Samples With Coordinated Self-Sensing Probes
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Multitool Platform for Morphology and Nanomechanical Characterization of Biological Samples With Coordinated Self-Sensing Probes

机译:具有协调自感探针的生物样品形态和纳米力学表征的多功能工具平台

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摘要

Single-cell studies are extremely important in several fields of research in both molecular and cell biology. Current nanocharacterization techniques based on atomic force microscopy allow researchers to study cells and molecules in unprecedented detail. An important limitation of conventional equipment results from the use of a single probe to measure different parameters of the same sample. To avoid this, here we present a multitool platform based on coordinated self-sensing probes. A first tool, based on quartz tuning fork resonators, is used to image the surface. A second tool, based on a piezoresistive cantilever, is used to measure the nanomechanical properties of the sample. Specific instrumentation circuitry was developed to optimize imaging and force measurement with these probes. Different coordination strategies were studied and a solution was selected that coordinates the nanotools in the microworld and in the nanoworld. Finally, an experiment with biological samples was conducted: the tuning-fork-based tool measured the topography of Escherichia Coli bacterial membranes and the piezoresistive-cantilever-based tool measured their elastic properties.
机译:单细胞研究在分子生物学和细胞生物学的多个研究领域中极为重要。当前基于原子力显微镜的纳米表征技术使研究人员能够以前所未有的细节研究细胞和分子。传统设备的重要局限性在于使用单个探针测量同一样品的不同参数。为避免这种情况,我们在此提出了一种基于协调的自感应探针的多功能工具平台。基于石英音叉谐振器的第一工具用于对表面成像。基于压阻悬臂的第二种工具用于测量样品的纳米力学性能。开发了专用的仪器电路,以优化这些探头的成像和测力。研究了不同的协调策略,并选择了在微世界和纳米世界中协调纳米工具的解决方案。最后,对生物样品进行了实验:基于音叉的工具测量了大肠杆菌的细菌膜的形貌,而基于压阻悬臂的工具则测量了它们的弹性。

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