DMREF/Collaborative Research: Switchable Underwater Adhesion through Dynamic Chemistry and Geometry

DMREF/合作研究：通过动态化学和几何形状切换水下粘附力

• 批准号: 2119105
• 负责人: Michael Bartlett
• 金额: $ 46.47万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2119105&HistoricalAwards=false
• 关键词: DMREF; Collaborative; Research; Switchable; Underwater

Strong adherence to underwater or wet surfaces for applications like tissue adhesion and underwater robotics is a significant challenge. This is especially apparent when switchable adhesion is required which demands rapid attachment, high adhesive capacity, and easy release. While organisms like the octopus and mussel excel at underwater adhesion, synthetic adhesives lag far behind, which is due to a fundamental knowledge gap in how chemical, geometric, and material properties interact to control underwater switchable adhesion. This Designing Materials to Revolutionize and Engineer our Future (DMREF) award aims to incorporate mussel-inspired adhesive chemistry with octopus-inspired adhesive structures to rapidly switch adhesion in dry and wet conditions. This will accelerate and build the fundamental knowledge of how chemical, geometric, and material properties control switchable adhesion to transform the design of rapidly switchable adhesives for stiff and soft substrates in wet and dry environments. This new knowledge will advance future economic and societal innovations in critical applications from transient tissue adhesives for prosthetic and wearable sensors to robot-assisted surgery, robotic gripping, and pick-and-place manufacturing. In addition to training and mentoring strong graduate students, the research team will develop bio-inspired adhesive gripping activities to inspire K-12 students to pursue science and engineering careers. This will be complemented by engaging future workforce leaders in adhesion science and engineering through career development panels at national adhesion conferences.This DMREF award supports research to combine underwater-based dynamic adhesive chemistry with active adhesive geometry to determine how adhesion can be switched underwater. The goal of this work is to provide the fundamental understanding needed to design adhesives with tunable adhesion strength, high adhesion switching ratios, and rapid switching times. This will be achieved by integrating experiments, simulations, and machine learning into a cooperative framework. This research will establish for the first time a design methodology that amplifies the benefits of chemistry and geometry into a single underwater switchable adhesive system. This design methodology will provide opportunities to speed up the switching of dynamic chemistry by releasing the interface with active materials and enhancing the adhesion strength of geometric structures with dynamic adhesive chemistry. In contrast to prior work which has studied how chemistry or geometry independently influences adhesion, this work will uniquely determine how dynamic chemistry and active materials combine to control adhesion, providing new paradigms in adhesive design.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.

对于组织粘附和水下机器人等应用来说，对水下或潮湿表面的牢固粘附是一个重大挑战。当需要可切换的粘合力时，这一点尤其明显，这需要快速附着、高粘合能力和易于释放。虽然章鱼和贻贝等生物体在水下粘附方面表现出色，但合成粘合剂却远远落后，这是由于在化学、几何和材料特性如何相互作用以控制水下可切换粘附方面存在基本知识差距。该“设计材料革命和工程我们的未来”(DMREF) 奖项旨在将受贻贝启发的粘合剂化学与受章鱼启发的粘合剂结构相结合，以在干燥和潮湿条件下快速切换粘合力。这将加速并建立化学、几何和材料特性如何控制可切换粘合力的基础知识，以改变在潮湿和干燥环境中用于硬质和软质基材的快速可切换粘合剂的设计。这些新知识将推动未来关键应用领域的经济和社会创新，从用于假肢和可穿戴传感器的瞬态组织粘合剂到机器人辅助手术、机器人抓取和拾放制造。除了培训和指导优秀的研究生外，研究团队还将开发仿生粘性抓握活动，以激励 K-12 学生追求科学和工程职业。这将通过国家粘合会议上的职业发展小组吸引未来劳动力领导者参与粘合科学和工程来补充。该 DMREF 奖项支持将水下动态粘合剂化学与活性粘合剂几何结构相结合的研究，以确定如何在水下切换粘合力。这项工作的目标是提供设计具有可调粘合强度、高粘合切换比和快速切换时间的粘合剂所需的基本理解。这将通过将实验、模拟和机器学习集成到一个合作框架中来实现。这项研究将首次建立一种设计方法，将化学和几何学的优势放大到单一的水下可切换粘合剂系统中。这种设计方法将通过释放与活性材料的界面并通过动态粘合化学增强几何结构的粘合强度来提供加速动态化学转换的机会。与之前研究化学或几何形状如何独立影响粘附力的工作相比，这项工作将独特地确定动态化学和活性材料如何结合起来控制粘附力，为粘合剂设计提供新的范例。该奖项反映了 NSF 的法定使命，并被认为是值得的通过使用基金会的智力优势和更广泛的影响审查标准进行评估来获得支持。

项目成果

Metamaterial adhesives for programmable adhesion through reverse crack propagation

• DOI: 10.1038/s41563-023-01577-2
• 发表时间: 2023-06
• 期刊: Nature Materials
• 影响因子: 41.2
• 作者: Dohgyu Hwang;Chanhong Lee;Xingwei Yang;J. M. Pérez-González;Jason Finnegan;Bernard Lee;Eric J. Markvicka;Rong Long;Michael D. Bartlett

Peel tests for quantifying adhesion and toughness: A review

• DOI: 10.1016/j.pmatsci.2023.101086
• 发表时间: 2023-04-28
• 期刊: PROGRESS IN MATERIALS SCIENCE
• 影响因子: 37.4
• 作者: Bartlett, Michael D.;Case, Scott W.;Dillard, David A.
• 通讯作者: Dillard, David A.