University of California, San Diego, La Jolla, CA, USA.
University of California, San Diego, La Jolla, CA, USA.
Mater Sci Eng C Mater Biol Appl. 2019 Dec;105:110066. doi: 10.1016/j.msec.2019.110066. Epub 2019 Aug 9.
Avian flight feathers have developed, through evolution, an intricate architecture with multi-functional structures that are essential for flight. These lightweight and resilient appendages motivate the invention of bioinspired designs. Here we fabricate various structures inspired by significant concepts identified in the feather vane and shaft. Bioinspired prototypes based on the feather vane's unique adhesive mechanism and directional permeability are explored, and feather-shaft inspired designs motivated by the highly ordered hierarchical fiber-matrix structure in the feather are fabricated. The exquisite architecture of the rachis, consisting of a hollow tube filled with foam, is simulated in a bioinspired design that demonstrates the synergy of the two components in enhancing the flexural strength. These structures provide an enhanced understanding of the mechanisms operating in feathers and suggest highly efficient solutions which can contribute to creating innovative materials inspired by the feather.
鸟类的飞行羽毛经过进化，形成了一种复杂的结构，具有多种功能，对飞行至关重要。这些轻巧而有弹性的附属物激发了仿生设计的发明。在这里，我们根据羽片和羽轴中确定的重要概念来制造各种结构。探索了基于羽片独特的粘附机制和定向渗透性的仿生原型，以及受羽轴中高度有序的纤维-基质分层结构启发的设计。通过仿生设计模拟了羽轴精致的结构，其中包含一个充满泡沫的空心管，展示了两个组件在增强弯曲强度方面的协同作用。这些结构提供了对羽毛中运行机制的深入了解，并提出了高效的解决方案，有助于创造受羽毛启发的创新材料。
