Recently, materials with micro-architecture of hollow trusses and ultralow density (less than 10–2 Mg/m3) have gained attention. The materials have been fabricated by forming templates based on 3D lithographical techniques, followed by hard coating on the surface, and finally etching out the template. Here, we describe a novel fabrication method for another micro architecture composed of a single continuous smooth-curved shell with D-surface, named Shellular; its template is prepared based on weaving flexible polymer wires. Compression test results reveal that these D-surfaced Shellulars have strength and Young’s modulus comparable to those of their hollow truss-based competitors. The best virtue of this weaving-based technology is its mass-productivity and large-size potential. Also, this technology can be applied to fabricate not only D-surfaced but also P- or G-surfaced Shellular. The unique geometry of Shellular, composed of a single continuous, smooth, and interfacial shell or membrane separating two equivalent sub-volumes intertwined with each other, appears to possess huge application potential such as non-clogging tissue engineering scaffolds and compact light-weight fuel cells with high energy density.
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机译：近年来，具有中空桁架微结构且超低密度（小于10 –2 Mg / m 3 ）的材料受到关注。通过基于3D光刻技术形成模板，然后在表面进行硬涂层，最后蚀刻掉模板，来制造材料。在这里，我们描述了一种新的制造方法，该方法用于另一种由带有D表面的连续连续光滑曲面壳构成的微结构，称为Shellular；它的模板是基于编织的柔性聚合物线制备的。压缩测试结果表明，这些D面壳牌飞机的强度和杨氏模量可与基于空心桁架的竞争对手相比。这种基于织造的技术的最大优点是其批量生产能力和巨大的潜力。而且，该技术不仅可以用于制造D表面的外壳，而且可以制造P表面或G表面的外壳。 Shellular的独特几何形状由单个连续的，光滑的界面壳或膜组成，它们将两个相等的子体积相互缠绕在一起，似乎具有巨大的应用潜力，例如不阻塞组织工程支架和紧凑的轻质燃料高能量密度的电池。
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