COLLABORATIVE RESEARCH: Identifying the Dielectric Properties of Liquid-Metal Polymer Composites to Ensure the Dielectric Integrity of Deformable Electronic Applications

合作研究:确定液态金属聚合物复合材料的介电性能,以确保可变形电子应用的介电完整性

基本信息

  • 批准号:
    2124877
  • 负责人:
  • 金额:
    $ 30万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing 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

项目摘要

Nontechnical SummaryBioelectronics and soft robotics require electronic materials that function while being stretched or compressed. Composites of soft polymers with metals that are liquid at, or near, room temperature, have recently gained extensive attention from the scientific community for such applications. They have shown impressive performance as stretchable electronic components and for physiological sensors. Prior research has focused on expanding the promise of these composite materials, but relatively little has been done to understand their electrical aging and failure mechanisms. The lack of knowledge could lead to premature failure and may put future technologies utilizing liquid metal polymer composites at risk. This project combines experimental analysis and numerical modeling to identify the key characteristics that lead to the unique electrical performance and breakdown of liquid metal polymer composites. With the understanding established through this project, future soft electronic technologies can be developed with application-specific performance and long-term durability in mind. The novel findings of this project will be utilized to promote underrepresented minority student intertest in STEM. Building on the existing relationship with the Girl Scouts and by taking advantage of the world-class high-voltage lab, a series of polymer, capacitor, and high voltage-related experiments will be designed for young women and K-12 students. Furthermore, short courses on high-voltage engineering and dielectrics with use cases on deformable dielectrics will be delivered at community colleges to promote university recruitment in Alabama and Mississippi. This project is jointly funded by the Electronic and Photonic Materials (EPM) program of the Division of Materials Research (DMR), the Established Program to Stimulate Competitive Research (EPSCoR), and the Metals and Metallic Nanostructures (MMN) program of DMR. Technical SummaryLiquid metal polymer composites (LMPCs) have shown impressive performance by simultaneously providing high dielectric permittivity and low modulus. While previous research has demonstrated that the composite formulation can be tuned to address the specific needs of soft capacitor and tensile or pressure sensors, little work has focused on the long-term effects of using LMPCs as dielectrics. Specifically, the dielectric aging and failure mechanisms of LMPCs that vary by application-specific electrical stresses are currently unknown. The goal of this project is taking an integrated experimental and modeling approach to develop a first principles understanding of the key parameters governing the dielectric performance and aging mechanism of LMPCs. The team will investigate the effects of droplet shape, size, loading, composition, mechanical loading, and voltage stress type on the permittivity, dissipation factor, partial discharge inception voltage, and dielectric strength of LMPCs. A finite element analysis simulation environment will be used to model trends in permittivity and variation of the dielectric strength. The outcomes of this project will enable future deformable technologies that take advantage of LMPCs to not only tailor formulations to a specific application, but also maximize device lifetime and dielectric integrity.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.
生物电子学和软机器人技术需要在拉伸或压缩时发挥功能的电子材料。软聚合物与在室温或接近室温下为液体的金属的复合材料最近在此类应用中获得了科学界的广泛关注。它们作为可拉伸电子元件和生理传感器显示出令人印象深刻的性能。以前的研究集中在扩大这些复合材料的前景,但相对较少了解其电老化和失效机制。知识的缺乏可能导致过早失效,并可能使未来利用液态金属聚合物复合材料的技术处于危险之中。该项目结合了实验分析和数值建模,以确定导致液态金属聚合物复合材料独特电气性能和击穿的关键特性。通过该项目建立的理解,未来的软电子技术可以开发特定于应用的性能和长期耐用性。该项目的新发现将用于促进STEM中代表性不足的少数民族学生的兴趣。在与女童子军现有关系的基础上,并利用世界一流的高压实验室,将为年轻女性和K-12学生设计一系列聚合物,电容器和高压相关实验。此外,将在社区学院提供关于高压工程和可变形电缆用例的短期课程,以促进亚拉巴马和密西西比的大学招聘。该项目由材料研究部(DMR)的电子和光子材料(ETM)计划,刺激竞争研究的既定计划(EPSCoR)以及DMR的金属和金属纳米结构(MMN)计划共同资助。液态金属聚合物复合材料(LMPC)通过同时提供高介电常数和低模量而显示出令人印象深刻的性能。虽然以前的研究已经证明,复合材料配方可以调整,以满足软电容器和拉伸或压力传感器的特定需求,但很少有工作集中在使用LMPC作为电容器的长期影响上。具体而言,介电老化和失效机制的LMPC的应用特定的电应力的变化是目前未知的。该项目的目标是采取综合实验和建模方法,以发展对LMPC介电性能和老化机制的关键参数的第一原理理解。该团队将研究液滴形状,尺寸,负载,成分,机械负载和电压应力类型对LMPC的介电常数,耗散因子,局部放电起始电压和介电强度的影响。有限元分析模拟环境将用于模拟介电常数和介电强度变化的趋势。该项目的成果将使未来的可变形技术,利用LMPC的优势,不仅定制配方,以特定的应用,但也最大限度地提高设备的寿命和介电完整性。该奖项反映了NSF的法定使命,并已被认为是值得通过评估使用基金会的知识价值和更广泛的影响审查标准的支持。

项目成果

期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Effects of Droplet Size and Dispersion Homogeneity on the Dielectric Integrity of Liquid Metal Polymer Composites
  • DOI:
    10.1109/eic55835.2023.10177339
  • 发表时间:
    2023-06
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Robert E. Calabrese;Elizabeth Bury;R. Green;Amanda S. Koh;Chan-Joo Park
  • 通讯作者:
    Robert E. Calabrese;Elizabeth Bury;R. Green;Amanda S. Koh;Chan-Joo Park
Effects of filler composition, loading, and geometry on the dielectric loss, partial discharge, and dielectric strength of liquid metal polymer composites
  • DOI:
    10.1016/j.compositesb.2022.109686
  • 发表时间:
    2022-02-01
  • 期刊:
  • 影响因子:
    13.1
  • 作者:
    Calabrese, Robert E.;Bury, Elizabeth;Park, Chanyeop
  • 通讯作者:
    Park, Chanyeop
Effect of Particle Geometry on Electric Field Distribution, Partial Discharge, and Dielectric Strength of Iron-Polymer Composites
颗粒几何形状对铁聚合物复合材料电场分布、局部放电和介电强度的影响
  • DOI:
    10.1109/eic51169.2022.9833170
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Calabrese, Robert E.;Bury, Elizabeth;Koh, Amanda;Park, Chanyeop
  • 通讯作者:
    Park, Chanyeop
Multimodal Deformation of Liquid Metal Multimaterial Composites as Stretchable, Dielectric Materials for Capacitive Pressure Sensing
  • DOI:
    10.1021/acsami.1c21734
  • 发表时间:
    2022-03-23
  • 期刊:
  • 影响因子:
    9.5
  • 作者:
    Bury, Elizabeth;Koh, Amanda S.
  • 通讯作者:
    Koh, Amanda S.
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Amanda Koh其他文献

Exploring the complex deformation behavior of liquid metal polymer composites through experimental and novel computational approaches
通过实验和新颖的计算方法探索液态金属聚合物复合材料的复杂变形行为
  • DOI:
    10.1016/j.compositesb.2025.112257
  • 发表时间:
    2025-05-01
  • 期刊:
  • 影响因子:
    14.200
  • 作者:
    Anh Hoang;Matthew Grasinger;Easir Arafat Papon;Amanda Koh
  • 通讯作者:
    Amanda Koh
Safety and efficacy of tranexamic acid to minimise perioperative bleeding in extrahepatic abdominal surgery: a systematic review
  • DOI:
    10.1016/j.ejso.2020.11.089
  • 发表时间:
    2021-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Amanda Koh;Alfred Adiamah;Sudip Sanyal
  • 通讯作者:
    Sudip Sanyal
Correlation between Altmetric Attention Scores and citation scores across the high impact-factor journals each in Medicine, Surgery, and Anaesthesia
在医学、外科和麻醉学的高影响因子期刊中,替代计量关注度分数与引用分数之间的相关性
  • DOI:
    10.1016/j.bja.2024.09.034
  • 发表时间:
    2025-03-01
  • 期刊:
  • 影响因子:
    9.200
  • 作者:
    Amanda Koh;Christopher A. Lewis-Lloyd;Tiffany Wong;Dileep N. Lobo
  • 通讯作者:
    Dileep N. Lobo
Risk of osteopaenia, osteoporosis and osteoporotic fractures in patients with chronic pancreatitis: A systematic review and meta-analysis
  • DOI:
    10.1016/j.clnu.2023.05.019
  • 发表时间:
    2023-07-01
  • 期刊:
  • 影响因子:
  • 作者:
    Amanda Koh;Olamide Oyende;David J. Humes;Dileep N. Lobo
  • 通讯作者:
    Dileep N. Lobo
Fatigue while reading digital breast tomosynthesis (DBT) cases: determination of fatigue onset based on blinks
  • DOI:
    10.1016/j.crad.2020.11.012
  • 发表时间:
    2020-12-01
  • 期刊:
  • 影响因子:
  • 作者:
    Dorina Roy;Nisha Sharma;Amanda Koh;Peter Phillips;Alastair Gale;William Teh;Yan Chen
  • 通讯作者:
    Yan Chen

Amanda Koh的其他文献

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{{ truncateString('Amanda Koh', 18)}}的其他基金

Developing surfmer structure-property relationships for high internal phase emulsion foams
开发高内相乳液泡沫的 surfmer 结构-性能关系
  • 批准号:
    2138945
  • 财政年份:
    2022
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant
Assembly Mechanism Investigation and Theoretical Framework Development of Magnetorheological Emulsions for Low Power Energy Dampers
低功率能量阻尼器磁流变乳液装配机理研究及理论框架开发
  • 批准号:
    2212116
  • 财政年份:
    2022
  • 资助金额:
    $ 30万
  • 项目类别:
    Standard Grant

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