LEAPS-MPS: Emergent Mechanics of a Living Material

LEAPS-MPS：生命材料的新兴力学

• 批准号: 2137509
• 负责人: Pasha Tabatabai
• 金额: $ 18.13万
• 依托单位: Seattle University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2137509&HistoricalAwards=false
• 关键词: LEAPS; MPS; Emergent; Mechanics; Living

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). Nature provides fantastic examples of behaviors that are not currently possible with engineered materials. For example, fish within a school process information to stay together as an organized unit, yet the school is capable of reorganizing quickly and changing its overall shape. This award investigates the structural organization, and changes therein, of a school of fish as a way to identify the mechanical possibilities of self-driven materials. Applications of this work are to define new rules and design principles for materials engineering. This award supports the expansion of interdisciplinary research topics for undergraduate students at Seattle University and generates opportunities for undergraduate students to present work at academic conferences. Furthermore, this award initiates early career development and support for local high school students by funding immersive traineeships.Collective behaviors as seen in schools of fish and flocks of birds demonstrate the ability for individuals to form dynamic ordered groups. These behaviors are a consequence of simple interactions between each constituent. However, simple interactions between individuals are also observed in pair-wise interactions that determine traditional materials structure (ex: crystal lattice spacing) and mechanical properties (ex: bond spring constant). This award uses motivations from equilibrium materials to characterize the structure and define mechanical properties of non-equilibrium schools of fish, allowing a comparison between traditional materials science and living materials. Consequently, this will increase fundamental understandings of living systems and inspire new materials design. This award addresses the need for simple and controllable experimental realizations of active materials. Further, this formulates a perspective to treat an active system as a material with bulk mechanical properties.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.

该奖项的全部或部分资金来自《2021年美国救援计划法案》(公法117-2)。自然界提供了目前在工程材料中不可能实现的行为的奇妙例子。例如，鱼群中的鱼将信息处理成一个有组织的单位，但鱼群有能力迅速重组并改变其整体形状。该奖项调查一群鱼的结构组织及其变化，以此作为识别自驱动材料的机械可能性的一种方式。这项工作的应用是为材料工程定义新的规则和设计原则。该奖项支持西雅图大学本科生跨学科研究课题的扩展，并为本科生在学术会议上展示工作创造了机会。此外，该奖项通过资助身临其境的实习生来启动对当地高中生的早期职业发展和支持。在鱼群和鸟群中看到的集体行为展示了个人形成动态有序群体的能力。这些行为是每个组成部分之间简单相互作用的结果。然而，在成对相互作用中也观察到个体之间的简单相互作用，这些相互作用决定了传统材料的结构(例如：晶格间距)和机械性能(例如，键弹性常数)。该奖项使用平衡材料的动机来描述非平衡鱼群的结构和定义机械特性，从而可以比较传统材料科学和生物材料。因此，这将增加对生命系统的基本理解，并启发新材料设计。该奖项涉及对活性材料的简单和可控的实验实现的需求。此外，这形成了一种观点，将主动系统视为具有大量机械性能的材料。该奖项反映了NSF的法定使命，并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，认为值得支持。