RII Track-4:@NASA: Process-Structure-Property Relationship of the Hybrid Manufactured Multifunctional Mechano-Luminescence-Optoelectronic Fibers

RII Track-4：@NASA：混合制造的多功能机械-发光-光电纤维的工艺-结构-性能关系

• 批准号: 2327493
• 负责人: Donghyeon Ryu
• 金额: $ 29.98万
• 依托单位: New Mexico Institute of Mining and Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-01-01 至 2025-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2327493&HistoricalAwards=false
• 关键词: RII; Track; NASA; Process; Structure

A health monitoring wearable has been considered as one of the promising technological solutions to better understand how the human body behaves for health diagnosis/prognosis, fitness improvement, and human-machine interaction. However, the state-of-the-arts suffer from the battery-dependent external energy supply. This project aims to provide a technological breakthrough with the multifunctional mechano-luminescence-optoelectronic (MLO) fiber that is self-powered for strain sensing and generates electrical energy via two-step mechanical-radiant-electrical energy conversion. Additionally, this project aims to advance the national health, prosperity, and welfare and to secure the national defense by promoting the progress of science through in-depth understanding of the process-structure-property (PSP) relationship of the MLO fiber’s functional building blocks. The gained knowledge can help enhance human presence in space. This project can provide opportunities for students underrepresented in STEM at New Mexico Tech (NMT) by visiting NASA Ames Research Center (ARC) to work with world-renowned scientists in cutting-edge facilities on the novel research topics and potentially work for NASA. Also, a transdisciplinary graduate course will be created at NMT on a topic of advanced manufacturing with an emphasis on the PSP relationship. The project is envisioned to contribute to four key industries in New Mexico, including Aerospace & Defense, Biosciences, Intelligent Manufacturing, and Sustainable & Green Energy.In this project, in collaboration with Dr. Koehne at NASA ARC, the PI aims to advance knowledge in the PSP relationship of the functional building blocks of the MLO fibers that are fabricated using a hybrid manufacturing. The MLO fibers are composed of two functional building blocks: 1) mechano-luminescent (ML) copper-doped zinc sulfide (ZnS:Cu) and 2) mechano-optoelectronic poly(3-hexylthiophene) (P3HT). In the design of the MLO fiber, the mechanical-radiant and radiant-electrical energy conversions of the ML ZnS:Cu and MO P3HT, respectively, are coupled to generate direct current (DC) when exposed to external mechanical stimuli. The generated DC varies with a strain and a strain rate, which makes the MLO fiber multifunctional to perform as a self-powered strain sensor and a mechanical-radiant-electrical energy harvester. Knowledge can be acquired about how the MO P3HT that are deposited in thin film using air-brushing form lamellae and exhibit MO properties. Also, the PI expects to uncover the light emission mechanism of the ML phosphors that are embedded in polydimethylsiloxane (PDMS) under mechanical deformation and how the ML light emission is affected by the profile (e.g., shape, size, and doping concentration) of the ML microparticles and related to a strain and a strain rate. In addition, single-walled carbon nanotubes (SWNTs) will be used for designing the nano-structures of P3HT to attain target functionalities. The PI plans two research tasks on PSP studies on MO P3HT-SWNT and ML ZnS:Cu-PDMS to conduct at NASA ARC during three-month summer visits in Y1 and Y2. Also, before each summer visit, preliminary studies will be conducted at NMT for accumulating database to be used for designing nano-/micro-structures of the MO and ML functional building blocks through molecular dynamics modeling and simulations.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.

健康监测可穿戴术被认为是承诺的技术解决方案之一，可以更好地了解人体对健康诊断/预后，适应性改善和人机相互作用的行为。但是，最先进的工厂遭受了依赖电池依赖的外部能源供应。该项目旨在通过多功能的机械发光 - 振动（MLO）光纤提供技术突破，该纤维是自供电的，用于应变感应，并通过两步机械降低电力电能量转换产生电能。此外，该项目旨在通过深入了解MLO Fiber的功能构建块的过程结构 - 培训（PSP）关系来促进科学的进步，从而促进国民健康，繁荣和福利，并通过促进科学的进步来确保国防。获得的知识可以帮助增强人类在太空中的存在。该项目可以通过访问NASA AMES研究中心（ARC）在新墨西哥理工学院（NMT）的STEM中代表性不足的学生提供机会，以与世界知名的科学家合作，从事新型研究主题，并可能为NASA工作。此外，还将在NMT上创建跨学科的研究生课程，讨论高级制造业的主题，重点是PSP关系。该项目设想为新墨西哥州的四个关键行业做出贡献，包括航空航天与国防部，生物科学，智能制造业以及可持续和绿色的能源。在该项目中，与NASA ARC的Koehne博士合作，PI旨在促进使用Mlo Fibers Plotinational Inderatient a Hybratied a Hybricturatiurant hybrids brauncaturing hybric brauncativing a hybrids braunce的PSP关系中的知识。 MLO纤维由两个功能构建块组成：1）机械发光（ML）铜硫化锌（Zns：Cu）和2）机械 - optoelectronic poly（3-己基噻吩）（P3HT）。在MLO纤维的设计中，分别将ML Zns的机械范围和辐射电能量转换分别耦合，以生成直接电流（DC），当暴露于外部机械刺激中时。生成的直流范围具有应变和应变速率，这使得MLO纤维多功能以自动应变传感器和机械降低电动能量收割机的形式执行。可以获取有关如何使用空气刷中薄膜沉积的Mo P3HT的知识。此外，PI期望发现在机械变形下嵌入聚二甲基硅氧烷（PDM）中的ML磷酸盐的光发射机制，以及ML光发射如何受到ML微颗粒的形状，形状，大小和掺杂量的剖面以及与应变速率和应变速率的影响。此外，单壁碳纳米管（SWNT）将用于设计P3HT的纳米结构以达到目标功能。 PI计划在MO PSP研究上进行两项研究任务，以了解MO P3HT-SWNT和ML ZNS：CU-PDMS在Y1和Y2的三个月夏季访问中在NASA ARC进行。此外，在每次夏季访问之前，将在NMT进行初步研究，以通过分子动力学建模和模拟来累积数据库，用于设计MO和ML功能性构件的纳米/微观结构。该奖项反映了NSF的法定任务，并通过评估CR的智力构成了基金会的诚实，并通过基金会的构成了基金会的构成和广泛的效果。