分形切割对材料的形状和结构进行工程改造。
Engineering the shape and structure of materials by fractal cut.
机构信息
High Temperature Energy Materials Research Center and.
Photo-Electronic Hybrids Research Center, Korea Institute of Science and Technology, Seoul 136-791, South Korea;
出版信息
Proc Natl Acad Sci U S A. 2014 Dec 9;111(49):17390-5. doi: 10.1073/pnas.1417276111. Epub 2014 Nov 24.
In this paper we discuss the transformation of a sheet of material into a wide range of desired shapes and patterns by introducing a set of simple cuts in a multilevel hierarchy with different motifs. Each choice of hierarchical cut motif and cut level allows the material to expand into a unique structure with a unique set of properties. We can reverse-engineer the desired expanded geometries to find the requisite cut pattern to produce it without changing the physical properties of the initial material. The concept was experimentally realized and applied to create an electrode that expands to >800% the original area with only very minor stretching of the underlying material. The generality of our approach greatly expands the design space for materials so that they can be tuned for diverse applications.
本文讨论了通过在多层次结构中引入一组具有不同图案的简单切口，将片状材料转化为各种所需形状和图案的过程。每一次层次切口图案和切口层次的选择都允许材料扩展成具有独特属性集的独特结构。我们可以反向设计所需的扩展几何形状，以找到产生它所需的切口图案，而不会改变初始材料的物理性质。该概念已通过实验实现，并应用于制造一种电极，该电极可在仅对基础材料进行微小拉伸的情况下将原始面积扩展超过 800%。我们方法的通用性极大地扩展了材料的设计空间，使其能够针对各种应用进行调整。
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