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Collaborative Research: Nanofluidics Enabled Attenuation of Dynamic Impacts and Stress Waves

合作研究：纳米流体能够减弱动态冲击和应力波

基本信息

批准号：
1803695
负责人：
Weiyi Lu
金额：
$ 21.5万
依托单位：
Michigan State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1803695&HistoricalAwards=false
关键词：
Collaborative Research Nanofluidics Enabled Attenuation

项目摘要

Attenuation of dynamic impacts and stress waves has been pursued to protect personnel and important infrastructures and devices. However, mitigation procedures of stress waves of most of existing protection materials and structures are based on energy absorption underpinned by unrecoverable buckling and/or plastic deformation of materials and structures. Besides, the activation time of such deformation mechanisms is much longer than the time needed for dynamic impacts and stress waves propagate through these protection materials. Nanofluidics, in which the liquid is forced into nanoscale channels with hydrophobic surface by an external pressure or stress, is expected to provide a compelling route for attenuating mechanical wave energy. This mechanism has been routinely applied to characterize the nanopore size distributions of porous materials, but now offers a new paradigm for the design of protection materials and structures, entirely distinct from conventional energy absorption mechanisms. The overarching goal of this project is to investigate and understand nanofluidics enabled mitigation of dynamic impacts and stress waves with particular focuses on nanofluidics in three-dimensional nanoporous networks. This collaborative project will also provide a broad impact on education including professional trainings to both graduate and undergraduate students, and on outreach including inspiring interactions with local high schools. The objective of this collaborative project is to systematically investigate the science of nanofluidics in non-wetting liquid-solid nanoporous composite materials, and to explore its underlying protection mechanism for mitigating dynamic impacts and stress waves. To this end, the proposed research will focus on three tasks: (i) to investigate and unveil the science of nanofluidics in non-wetting liquid-solid nanoporous structures under a high speed loading using atomistic simulations, (ii) to develop a theoretical model of nanofluidic energy capture mechanism to quantify nanofluidic responses to dynamic impacts and stress waves, and (iii) to design and carry out verification experiments at high strain rates by employing non-wetting liquid-solid nanoporous materials platforms. The nanofluidic energy capture mechanism will refresh existing design strategies of protection materials and structures subjected to stress waves, thereby revolutionizing both fundamental nanofluidics and application technologies.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.

为了保护人员和重要的基础设施和设备，一直在努力衰减动态冲击和应力波。然而，大多数现有的防护材料和结构的应力波的缓解过程是基于由不可恢复的屈曲和/或材料和结构的塑性变形支撑的能量吸收。此外，这种变形机制的激活时间比动态冲击和应力波通过这些保护材料传播所需的时间长得多。纳米流体，其中液体被迫进入具有疏水表面的纳米级通道通过外部压力或应力，预计将提供一个引人注目的路径衰减机械波能量。这种机制已被常规应用于表征多孔材料的纳米孔径分布，但现在提供了一个新的范例的保护材料和结构的设计，完全不同于传统的能量吸收机制。该项目的总体目标是调查和了解纳米流体使动态冲击和应力波的缓解，特别关注三维纳米多孔网络中的纳米流体。这一合作项目还将对教育产生广泛的影响，包括对研究生和本科生的专业培训，以及对外联活动的影响，包括与当地高中的互动。该合作项目的目标是系统地研究非润湿液固纳米多孔复合材料中的纳米流体科学，并探索其潜在的保护机制，以减轻动态冲击和应力波。为此，拟议的研究将侧重于三项任务：（i）使用原子模拟在高速加载下研究和揭示非润湿液-固纳米多孔结构中的纳米流体科学，（ii）开发纳米流体能量捕获机制的理论模型以量化纳米流体对动态冲击和应力波的响应，以及（iii）通过采用非润湿的液-固纳米多孔材料平台来设计和实施高应变率下的验证实验。该纳米流体能量捕获机制将更新现有的设计策略的保护材料和结构受到应力波，从而彻底改变两个基本的纳米流体和应用技术。这个奖项反映了NSF的法定使命，并已被认为是值得的支持，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。

项目成果

期刊论文数量（13）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Time- and Pressure-Dependent Gas Diffusion in a Nanoconfined Liquid Phase

DOI：
10.1021/acs.jpcc.0c11318
发表时间：
2021-03
期刊：
Journal of Physical Chemistry C
影响因子：
3.7
作者：
Lijiang Xu;Mingzhe Li;Weiyi Lu
通讯作者：
Lijiang Xu;Mingzhe Li;Weiyi Lu

Enhanced energy mitigation of thin-walled tube filled with liquid nanofoam under dynamic impact

DOI：
10.1016/j.compositesb.2020.108047
发表时间：
2020-07-15
期刊：
COMPOSITES PART B-ENGINEERING
影响因子：
13.1
作者：
Li, Mingzhe;Barbat, Saeed;Lu, Weiyi
通讯作者：
Lu, Weiyi

Nanopore size effect on critical infiltration depth of liquid nanofoam as a reusable energy absorber

DOI：
10.1063/1.5065485
发表时间：
2019-01
期刊：
Journal of Applied Physics
影响因子：
3.2
作者：
Mingzhe Li;Lijiang Xu;Weiyi Lu
通讯作者：
Mingzhe Li;Lijiang Xu;Weiyi Lu

Functionalized water molecules confined in hydrogels for energy mitigation by assembling liquid nanofoams in micro polymeric pockets

通过在微聚合物袋中组装液体纳米泡沫，将功能化水分子限制在水凝胶中，以减少能量消耗

DOI：
10.1016/j.coco.2020.05.003
发表时间：
2020
期刊：
Composites Communications
影响因子：
8
作者：
Zhan, Chi;Li, Mingzhe;Lu, Weiyi
通讯作者：
Lu, Weiyi

Spontaneous outflow efficiency of confined liquid in hydrophobic nanopores

DOI：
10.1073/pnas.2009310117
发表时间：
2020-10-13
期刊：
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
影响因子：
11.1
作者：
Gao, Yuan;Li, Mingzhe;Xu, Baoxing
通讯作者：
Xu, Baoxing