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在纤维素纳米晶体悬浮中观察到的电动力对流不稳定性

Bruno Frka-Petesic^1,2, Bruno Jean³, Laurent Heux³

¹Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW UK.

Cellulose (London, England)

|September 4, 2023

概括

在非极性溶剂中的纤维素纳米晶体在高交流电场下表现出新的周期性模式. 这些模式与电动力学对流不稳定性有关,这表明液晶系统中的新型行为.

科学领域:

材料科学材料科学材料科学
软物质物理学软物质物理学
纳米技术纳米技术

背景情况:

纤维素纳米晶 (CNCs) 在悬浮中形成胆固醇液晶.
交流电场通常将CNC胆固醇序列解成一个类似于尼马的相位.

研究的目的:

为了研究CNC在高交流电场下的非极性溶剂中的行为.
描述新的周期性模式及其潜在机制.

主要方法:

在烯中悬浮CNC与表面活性剂.
高交流电场的应用 (在1kHz时高达4.6kV/cm).
观察和分析模式形成及其对场幅度的依赖.

主要成果:

在高电场下,CNC悬架形成周期性图案.
这些模式随着应用场幅度而变化.
观察到的现象归因于电动力学对流不稳定.

结论:

高电场会在数控机中诱导复杂的电液动力学不稳定.
与文献相比,使用的特定几何形状可能会影响不稳定体制.
需要进一步的实验来充分阐明不稳定机制.

关键词:

纤维素纳米晶体的纤维素.对于胆固醇,这是一个很大的问题.结合体液晶晶体的结合体液晶体.电流传导电流传导电流传导

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