Analysis of the linear viscoelasticity of polyelectrolytes by magnetic microrheometry—Pulsed creep experiments and the one particle response

Analysis of the linear viscoelasticity of polyelectrolytes by magnetic microrheometry—Pulsed creep experiments and the one particle response
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磁微流变法分析聚电解质的线性粘弹性——脉冲蠕变实验和单粒子响应

DOI:
10.1122/1.3266946
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发表时间:
2010
影响因子:
3.3
通讯作者:
R. Evans
R. Evans
中科院分区:
工程技术2区
文献类型:
--
作者:
M. Tassieri;T. Waigh;J. Trinick;A. Aggeli;R. Evans

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我们报告实验测量聚丙烯酰胺(柔性聚电解质),肌动蛋白(半柔性聚电解质),和自组装肽(凝胶半柔性聚电解质)的解决方案。使用基于带油浸(×100)透镜的立式Olympus显微镜的双极片磁显微流变仪进行测量。脉冲蠕变实验产生了高质量的数据在很宽的时间范围内与被动粒子跟踪和磁微观流变学结果之间的良好协议。这意味着在被动和主动微观流变学实验中,一个探针颗粒对其粘弹性环境的响应具有共性。
We report experimental measurements on polyacrylamide (flexible polyelectrolytes), actin (semi-flexible polyelectrolytes), and self-assembled peptide (gelled semi-flexible polyelectrolytes) solutions. The measurements were obtained using a two-pole piece magnetic microrheometer based on an upright Olympus microscope with an oil immersion (×100) lens. Pulsed creep experiments produced high quality data over a wide time range with good agreement between passive particle tracking and magnetic microrheology results. This implies a commonality of the one probe particle response to its viscoelastic environment in both passive and active microrheology experiments.
DOI: 10.1103/physrevlett.87.148102
发表时间: 2001-10-01
影响因子: 8.6
作者:
Fabry, B;Maksym, GN;Fredberg, JJ
通讯作者: Fredberg, JJ