Advanced Adhesion from Origami Inspired Thin-Film Structures

受折纸启发的薄膜结构的高级粘合力

基本信息

批准号：
2011681
负责人：
Andrew Croll
金额：
$ 24.03万
依托单位：
North Dakota State University Fargo
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-10-01 至 2024-09-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2011681&HistoricalAwards=false
关键词：
Advanced Adhesion Origami Inspired Thin

项目摘要

This grant will create new understanding of versatile adhesive systems that have the potential to create strong bonds on rough surfaces, to be used as new measurement techniques, and to be used to create responsive adhesive structures. Origami is the ancient art of paper folding which involves folding a thin sheet into an intimate, complex, and beautiful shape. The strategy is not limited to artistic work – sheets can be folded into shapes that can solve many modern engineering problems. When applied to adhesive technologies, Origami design can help overcome challenges by using the easy bending of a thin film to deform around roughness, while exploiting the stiffness of a film to create a strong structure. Origami structures can also be designed to be stable in two states, for example, one that sticks to an object well and one that does not stick well. In this way, dynamic systems can be developed to switch from a low adhesion to a high adhesion state upon request. In addition to these practical outcomes, this research will build a deep fundamental understanding of different basic features of origami structures, such as folds, ridges and d-cones. In concert, the grant will create educational and outreach opportunities for k-5 students, underrepresented minorities and the local public through interactive demonstrations, summer schools, and public speaking events. The specific goal of the research is to discover relations between material type (elastic, plastic, brittle) and adhesive performance of thin polymer films in several origami inspired architectures. Polydimethylsiloxane elastomers, polycarbonate and polystyrene will be used as model materials. Experiments will be performed under a confocal microscope, such that full 3D structural information is obtained at the same time as traditional force-displacement data is collected. Thin film loops, crumples and Reich origami patterns will be tested in compression and tension, quantifying useful mechanical and adhesion related metrics such as compliance and peak adhesive force. Specific focus will be given to understanding how material properties interplay with structural design units in thin film adhesives. The work will advance the fundamental understanding of how basic thin-film building block structures (bends, folds, d-cones, and ridges) work in concert to deliver macroscopic performance in Origami based designs. This research will allow the PI to advance structure-property understanding in thin film mechanics and advance the ability of engineers to design and predict behavior of origami inspired structure.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该赠款将为多功能粘合系统创造新的理解，这些系统有可能在粗糙的表面上建立牢固的纽带，用作新的测量技术，并用于创建响应式粘合剂结构。折纸是纸质折叠的古老艺术，涉及将薄纸折叠成私密，复杂和美丽的形状。该策略不仅限于艺术作品 - 可以将纸张折叠成可以解决许多现代工程问题的形状。当应用于粘合技术时，折纸设计可以通过使用薄膜易于弯曲来围绕粗糙度变形，同时利用薄膜的刚度来创建强结构，从而帮助克服挑战。折纸结构也可以设计为在两个状态下保持稳定，例如，一种粘在一个物体上，一种稳定在一个状态下。通过这种方式，可以开发动态系统，可应要求从低胶粘剂转换为高粘附状态。除了这些实际结果外，这项研究还将对折纸结构的不同基本特征（例如褶皱，山脊和D-cones）建立深刻的基本理解。在协同期间，这笔赠款将通过互动示威，暑期学校和公开演讲活动为K-5学生，代表性不足的少数民族和当地公众创造教育和推广的机会。该研究的具体目标是发现材料类型（弹性，塑料，脆性）和薄聚合物膜在几种折纸启发的建筑中的关系。聚二甲基硅氧烷弹性体，聚碳酸酯和聚苯乙烯将用作模型材料。实验将在共聚焦显微镜下进行，以便在收集传统的力置换数据的同时获得完整的3D结构信息。薄膜环，巡航和帝国折纸模式将在压缩和张力中进行测试，量化有用的机械和粘合性相关指标，例如合规性和峰值粘合力。特定的重点是了解材料特性如何与薄膜粘合剂中的结构设计单元相互作用。这项工作将进一步了解基本的薄膜构建块结构（弯曲，折叠，D-Cones和Ridges）如何共同发挥作用，以在基于折纸的设计中提供宏观的性能。这项研究将使PI能够在薄膜机制中促进结构 - 秘密的理解，并提高工程师设计和预测折纸启发结构的行为的能力。该奖项反映了NSF的法定任务，并通过使用基金会的知识分子优点和更广泛的影响标准来评估NSF的法定任务。