EFRI-ODISSEI: Externally-Triggered Origami of Responsive Polymer Sheets

这一新兴研究与创新前沿(EFRI)折纸设计用于工程创新的自组装系统集成(ODISSEI)奖的研究目标是研究一种新的折纸类型，通过响应外部触发(即光)折叠的聚合物薄片来实现免提折叠。折叠是为了响应DeskJet打印在聚合物片材上定义的铰链的能量局部化。这种方法的吸引力在于它的简单性、多功能性，以及能够利用多种2D图案技术，在受到刺激后几秒钟内将预拉紧聚合物薄片上的表面图案转换为3D对象。该团队包括两名专门从事表面设计和雕塑的艺术家/设计师，一名在材料多尺度力学方面具有专业知识的机械工程师，一名具有35年折纸经验的数学家，以及材料/化学工程师，他们寻求通过实验研究和计算模拟折叠过程，以创建新的多功能3D结构，这种结构可以通过精确控制形状快速形成。我们将对折叠的比例规律、折叠速度和折叠机制进行实验探索和建模，以开发顺应的折叠机制。我们的跨学科团队将合作推进我们的科学目标，同时扩大代表不足的群体的参与，并为K-12学生开发折纸外展模块。基于2D薄片折叠/展开的新结构的产生有望导致开发具有前所未有的功能/性能的材料的新范式。我们的方法具有重要的商业意义，因为它既兼容低技术、高通量的2D图案化技术(例如，卷到卷图案化)，也兼容电子和光子学的2D图案化。在各种技术应用中使用的可展开材料的包装或制造(包括与空军有关的材料，如用于精确空投人道主义用品的可展开气翼)构成了将从研究工作中受益的结构的例子。我们将开发一种方法，通过北卡罗来纳州立大学、伊隆大学以及邻近的S女子学院梅雷迪斯的教育和外展项目，吸引当地K-12教师和学生参与我们的跨学科研究努力。外展计划将由我们的团队协同开发和分发，成员包括艺术家、前高中教师、教折纸的数学家和北卡罗来纳州州立大学的工程师/科学家。该项目部分得到了空军科学研究办公室的资金支持。

The research objective of this Emerging Frontiers in Research and Innovation (EFRI) Origami Design for the Integration of Self-assembling Systems for Engineering Innovation (ODISSEI) award is to study a new class of origami by means of polymer sheets that fold in response to external triggers (i.e., light), for hands free folding. Folding occurs in response to the localization of energy to hinges that are defined on the polymer sheet by Deskjet printing. The appeal of this approach is its simplicity, versatility, and ability to harness the multitude of 2D patterning techniques to convert surface patterns on pre-strained polymer sheets into 3D objects within seconds upon exposure to a stimulus. The team, which includes two artists/designers who specialize in surface design and sculpting, a mechanical engineer with expertise in multi-scale mechanics of materials, a mathematician with 35 years of origami experience, and materials/chemical engineers, seeks to study experimentally and model computationally the folding process to create new multi-functional 3D structures that can form rapidly with precise control over shape. We will explore experimentally and model the scaling laws of folding, the rate of folding, and the mechanics of folding to develop compliant folding mechanisms. Our interdisciplinary team will collaborate to advance our scientific objectives while broadening participation of underrepresented groups and developing outreach modules on origami for K-12 students. Generation of novel structures based on folding/unfolding of 2D sheets is expected to lead to a novel paradigm towards developing materials with unprecedented function/property. Our approach has significant commercial relevance because it is compatible with both low-tech, high throughput 2D patterning techniques (e.g., roll-to-roll patterning) as well as 2D patterning of electronics and photonics. Packaging or manufacturing of unfoldable materials employed in various technological applications (including those relevant to the Air Force, such as, unfoldable air foils for precision airdrop of humanitarian supplies) constitute examples of structures that will benefit from the research effort. We will develop a means of attracting local K-12 teachers and students to take part in our interdisciplinary research endeavors through educational and outreach programs at NC State University, Elon University, and at Meredith, a neighboring women?s college. The outreach programs will be developed and distributed synergistically by our team featuring artists, a former high school teacher, a mathematician who teaches origami, and engineers / scientists from NC State University.This project is supported in part by funds from the Air Force Office of Scientific Research.