Multifunctional Mechanical Metamaterials with Embedded Triboelectric Nanogenerators
Multifunctional Mechanical Metamaterials with Embedded Triboelectric Nanogenerators
复制标题
嵌入摩擦电纳米发电机的多功能机械超材料
DOI：
10.1002/adfm.202001720
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发表时间：
2020-04-20
影响因子：
19
通讯作者：
Gibert, James
中科院分区：
文献类型：
--
作者：
Tao, Hongcheng;Gibert, James
平面摩擦纳米发电机 (TENG) 的灵活性使其能够嵌入具有复杂几何形状的结构中，并适应这些结构的任何变形。作为回报，嵌入式 TENG 可以充当应变敏感主动传感器或能量采集器，同时对结构的原始机械性能的影响可以忽略不计。这一优势催生了新型多功能材料，其中合规的 TENG 被分配到机械超材料的局部操作单元中，称为 TENG 嵌入式机械超材料。这种新型超材料继承了传统机械超材料的优点，因为材料内部拓扑的变形可以实现不同寻常的机械性能。该概念通过基于两个示例性超材料几何形状的原型的实验研究和有限元模拟来说明，其中研究了自供电传感、能量收集以及指定的机械行为的功能。这项工作为生产多功能摩擦电器件提供了一个新的框架。
The flexibility of planar triboelectric nanogenerators (TENGs) enables them to be embedded into structures with complex geometries and to conform with any deformation of these structures. In return, the embedded TENGs function as either strain-sensitive active sensors or energy harvesters while negligibly affecting the structure's original mechanical properties. This advantage inspires a new class of multifunctional materials where compliant TENGs are distributed into local operational units of mechanical metamaterial, dubbed TENG-embedded mechanical metamaterials. This new class of metamaterial inherits the advantages of a traditional mechanical metamaterial, in that the deformation of the internal topology of material enables unusual mechanical properties. The concept is illustrated with experimental investigations and finite element simulations of prototypes based on two exemplar metamaterial geometries where functions of self-powered sensing, energy harvesting, as well as the designated mechanical behavior are investigated. This work provides a new framework in producing multifunctional triboelectric devices.