文章基本信息

标题：Microrheology with Optical Tweezers: Measuring the relative viscosity of solutions ‘at a glance’
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作者：Manlio Tassieri ; Francesco Del Giudice ; Emma J. Robertson 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
期号：1
DOI：10.1038/srep08831
语种：English
出版社：Springer Nature
摘要：We present a straightforward method for measuring the relative viscosity of fluids via a simple graphical analysis of the normalised position autocorrelation function of an optically trapped bead, without the need of embarking on laborious calculations. The advantages of the proposed microrheology method are evident when it is adopted for measurements of materials whose availability is limited, such as those involved in biological studies. The method has been validated by direct comparison with conventional bulk rheology methods, and has been applied both to characterise synthetic linear polyelectrolytes solutions and to study biomedical samples.