MRI: Acquisition of a 4D Microtomography Apparatus for Nano/microstructured Materials and in-situ Nano/Micromechanics Research

MRI：购买用于纳米/微结构材料和原位纳米/微力学研究的 4D 显微断层扫描设备

• 批准号: 1726435
• 负责人: Hongbing Lu
• 金额: $ 61.85万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1726435&HistoricalAwards=false
• 关键词: MRI; Acquisition; 4D; Microtomography; Apparatus

This Major Research Instrumentation award will support the acquisition of a 4-dimensional (4D) micro-computed tomography system with capability for fast time-resolved observation of three-dimensional (3D) internal structures at different length scales. While extensive equipment exists for morphology characterization at nano- and microscales, the University of Texas at Dallas lacks instrumentation to observe in-situ internal 3D microstructures, particularly under deformation. The proposed system will advance the institution's research capabilities by providing non-destructive time-resolved 3D structures, critical for development of new materials, and understanding the mechanical behavior under service conditions for critical load-bearing applications. The acquisition of the 4D micro-tomography system will enable a wide range of new research activities with impacts from aerospace to biomedical applications, including low-density high strength composites, bioinspired robots, and 3D printed shape memory polymers. This equipment will enhance the training of graduate and undergraduate students, including a substantial number of underrepresented minority and women students, and will support student science projects at nearby high schools. The proposed system will advance university research capabilities, leading to enhanced economic development in the fast growing Dallas/Fort Worth metropolitan area and the nation. The 4D computed micro-tomography system can be used on a range of materials from soft polymers, composites, metallic foams, to ceramics. The large scanning area allows a loading frame to apply high loads to a sample during in-situ scanning. A fast computer allows control of the system, positioning of a sample, and 3D volumetric image reconstruction from radiographs. The system provides unprecedented capability to observe internal structures with exceptionally high resolution without serial sectioning--allowing in-situ micro-tomography while a sample is deformed. The system will enable fundamental research ranging from scalable nanomanufacturing processes for low-density and high strength composites using carbon nanotube sheets, to lighter, stronger bioinspired robots, and 3D printed polymer composites embedded with micro or nanoparticles to remotely trigger local heating and shape memory effects.

该重大研究仪器奖将支持购买 4 维 (4D) 微型计算机断层扫描系统，该系统能够对不同长度尺度的三维 (3D) 内部结构进行快速时间分辨观察。虽然存在用于纳米和微米尺度形态表征的大量设备，但德克萨斯大学达拉斯分校缺乏观察原位内部 3D 微观结构的仪器，特别是在变形情况下。拟议的系统将通过提供对新材料开发至关重要的非破坏性时间分辨 3D 结构以及了解关键承载应用的使用条件下的机械行为来提高该机构的研究能力。收购 4D 显微断层扫描系统将促进一系列新的研究活动，影响从航空航天到生物医学应用，包括低密度高强度复合材料、仿生机器人和 3D 打印形状记忆聚合物。该设备将加强研究生和本科生的培训，包括大量代表性不足的少数族裔和女学生，并将支持附近高中的学生科学项目。拟议的系统将提高大学的研究能力，从而促进快速发展的达拉斯/沃斯堡大都市区和国家的经济发展。 4D 计算机显微断层扫描系统可用于从软聚合物、复合材料、金属泡沫到陶瓷等一系列材料。大扫描区域允许装载框架在原位扫描期间向样品施加高负载。 快速计算机可以控制系统、定位样本以及从射线照片重建 3D 体积图像。 该系统提供了前所未有的能力，能够以极高的分辨率观察内部结构，无需进行连续切片，从而可以在样品变形时进行原位显微断层扫描。 该系统将支持基础研究，从使用碳纳米管片的低密度和高强度复合材料的可扩展纳米制造工艺，到更轻、更强的仿生机器人，以及嵌入微米或纳米粒子以远程触发局部加热和形状记忆效应的3D打印聚合物复合材料。

项目成果

Modeling the Compressive Buckling Strain as a Function of the Nanocomposite Interphase Thickness in a Carbon Nanotube Sheet Wrapped Carbon Fiber Composite

• DOI: 10.1115/1.4044086
• 发表时间: 2019-10
• 期刊: Journal of Applied Mechanics
• 作者: Xuemin Wang;T. Xu;Rui Zhang;M. J. Andrade;Pruthul Kokkada;D. Qian;Samit Roy;R. Baughman;Hongbing Lu

Controllable Preparation of Ordered and Hierarchically Buckled Structures for Inflatable Tumor Ablation, Volumetric Strain Sensor, and Communication via Inflatable Antenna

用于充气肿瘤消融、体积应变传感器和通过充气天线通信的有序和分层屈曲结构的可控制备

• DOI: 10.1021/acsami.8b19241
• 发表时间: 2019
• 期刊: ACS Applied Materials & Interfaces
• 影响因子: 9.5
• 作者: Wang Run;Liu Zhongsheng;Wan Guoyun;Jia Tianjiao;Zhang Chao;Wang Xuemin;Zhang Mei;Qian Dong;de Andrade Monica Jung;Jiang Nan;Yin Shougen;Zhang Rui;Feng Deqiang;Wang Weichao;Zhang Hui;Chen Hong;Wang Yinsong;Ovalle-Robles Raquel;Inoue Kanzan;Lu Hongbing;Fang
• 通讯作者: Fang

The effect of blast overpressure on the mechanical properties of the human tympanic membrane

爆炸超压对人体鼓膜力学性能的影响

• DOI: 10.1016/j.jmbbm.2019.07.026
• 发表时间: 2019
• 期刊: Journal of the Mechanical Behavior of Biomedical Materials
• 影响因子: 3.9
• 作者: Liang, Junfeng;Smith, Kyle D.;Gan, Rong Z.;Lu, Hongbing
• 通讯作者: Lu, Hongbing

Mapping the Young's modulus distribution of the human tympanic membrane by microindentation

• DOI: 10.1016/j.heares.2019.02.009
• 发表时间: 2019-07-01
• 期刊: HEARING RESEARCH
• 影响因子: 2.8
• 作者: Luo, Huiyang;Wang, Fang;Lu, Hongbing
• 通讯作者: Lu, Hongbing

Sheath-run artificial muscles

• DOI: 10.1126/science.aaw2403
• 发表时间: 2019-07-12
• 期刊: SCIENCE
• 影响因子: 56.9
• 作者: Mu, Jiuke;de Andrade, Monica Jung;Baughman, Ray H.
• 通讯作者: Baughman, Ray H.