论文标题
通过调节的共易溶剂去除，具有几乎均匀的亚微米域的双连接界面堵塞乳液凝胶
Bicontinuous interfacially jammed emulsion gels with nearly uniform sub-micrometer domains via regulated co-solvent removal
论文作者
论文摘要
多孔材料具有许多有用的功能，因为它们的表面积高以及调节热，质量，流体和电磁波的运输能力。与高度有序的结构不同，无序的多孔结构具有易于制造和高可容忍度的优势。双连接界面堵塞的乳液凝胶（Bijels）是动无序的双相材料，可以转换为具有可调特征的多孔材料。当前的Bijel制造方法导致较大或更大且尺寸不均匀的域，限制其表面积，机械强度以及与电磁波的相互作用。在这项工作中，通过两步溶剂的去除过程实现了具有均匀和子微米域的Bijels的可扩展合成。定量表征所得的比耶尔，以验证域的均匀性和亚微米尺度。此外，这些比耶尔的结构类似于白甲虫Cyphochilus尺度的微观结构。我们发现，这种厚度相对较小（<150 um）的Bijel膜在可见范围内表现出强大的太阳反射率以及高亮度和白度。考虑到它们在制造方面的可伸缩性，我们认为贵宾生物jels在大规模应用中具有巨大的潜力，包括被动冷却，太阳能电池和发光二极管（LED）。
Porous materials possess numerous useful functions because of their high surface area and ability to modulate the transport of heat, mass, fluids, and electromagnetic waves. Unlike highly ordered structures, disordered porous structures offer the advantages of ease of fabrication and high fault tolerance. Bicontinuous interfacially jammed emulsion gels (bijels) are kinetically trapped disordered biphasic materials that can be converted to porous materials with tunable features. Current methods of bijel fabrication result in domains that are micrometers or larger, and non-uniform in size, limiting their surface area, mechanical strength, and interaction with electromagnetic waves. In this work, scalable synthesis of bijels with uniform and sub-micrometer domains is achieved via a two-step solvent removal process. The resulting bijels are characterized quantitatively to verify the uniformity and sub-micrometer scale of the domains. Moreover, these bijels have structures that resemble the microstructure of the scale of the white beetle Cyphochilus. We find that such bijel films with relatively small thicknesses (< 150 um) exhibit strong solar reflectance as well as high brightness and whiteness in the visible range. Considering their scalability in manufacturing, we believe that VIPS-STRIPS bijels have great potential in large-scale applications including passive cooling, solar cells, and light emitting diodes (LEDs).
