Bicontinuous Soft Solids with a Gradient in Channel Size
Bicontinuous Soft Solids with a Gradient in Channel Size
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DOI：
10.1002/admi.202102307
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发表时间：
2021-10
影响因子：
5.4
通讯作者：
David J. French;A. Schofield;J. H. Thijssen
中科院分区：
文献类型：
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作者：
David J. French;A. Schofield;J. H. Thijssen
本文介绍了具有沿样品的通道大小设计的梯度的双连续界面堵塞的乳胶凝胶(“双凝胶”)的例子。这些样品是通过冷却具有沿样品的颗粒浓度梯度的二元流体而产生的，因为通道大小由局部颗粒浓度确定。局部颗粒浓度的梯度是通过两级加载过程实现的，每个阶段具有不同的颗粒体积分数。使用共聚焦显微镜和图像分析来定量测量双凝胶的通道大小。已经创建了通道大小梯度高达2.8%mm−1的Bijel。这种量身定做的软材料可以作为能量材料的模板，针对高离子传输率(高功率)和高界面面积(高能量密度)进行优化，使它们有可能在新的能源应用中发挥作用。
This paper presents examples of bicontinuous interfacially jammed emulsion gels (“bijels”) with a designed gradient in the channel size along the sample. These samples are created by quenching binary fluids which have a gradient in particle concentration along the sample, since the channel size is determined by the local particle concentration. A gradient in local particle concentration is achieved using a two‐stage loading process, with different particle volume fractions in each stage. Confocal microscopy and image analysis are used to quantitatively measure the channel size of the bijels. Bijels with a gradient in channel size of up to 2.8% mm−1 have been created. Such tailored soft materials could act as templates for energy materials optimized for both high ionic transport rates (high power) and high interfacial area (high energy density), potentially making them useful in novel energy applications.