MRI: Acquisition of a Hyper-Frequency Viscoelastic Spectroscopy Instrument for Interdisciplinary Undergraduate Research and Education

MRI：购买用于跨学科本科研究和教育的超高频粘弹性光谱仪器

• 批准号: 1229534
• 负责人: Christopher Lee
• 金额: $ 11.2万
• 依托单位: Franklin W. Olin College of Engineering
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1229534&HistoricalAwards=false
• 关键词: MRI; Acquisition; Hyper; Frequency; Viscoelastic

This NSF MRI award funds the acquisition of a hyper-frequency viscoelasticspectroscopy (HFVS) instrument for materials characterization. It is especially well suited formeasuring viscoelastic properties of biological tissues and artificial polymers because it canmake non-contacting, non-destructive measurements on small-sized samples over a wideexcitation frequency range. The HFVS instrument will be immediately used in five currentresearch projects: 1) computational simulation of traumatic brain injury; 2) determining the roleof active and passive forces in microvascular network formation; 3) dynamic characterization ofunderactuated legged locomotion, 4) design and fabrication of perching landing gear for microaerialvehicles, and 5) characterization of a biodegradable, biocompatible co-polymer. The mostsignificant contribution resulting from use of the instrument on each project is: 1) constitutivemodels for human brain tissue at high strain rates appropriate for blast-response simulation andanalysis; 2) characterization of a new extra-cellular matrix biomimetics for studying the effectsof both active and passive mechanical environments on cells, 3) material-tunable, dynamicmodels of underactuated legged locomotion for milli-scale robots, 4) tunable-stiffness and ?damping, polymer fabrication processes for perching landing gear mechanisms, and 5)manufacturing processes for controlling the properties of a class of environmentally-friendly, copolymersfor medical applications. In addition to supporting ongoing research, the instrumentwill enable future research involving related materials and will open new research areas inbioengineering, material science, and mechanical engineeringThe HFVS instrument will substantially enhance metrology capabilities at Olin College enablingthe characterization of materials ranging in stiffness from very compliant, nearly liquid (e.g.,gels) to very rigid by quantitative measurement of mechanical stiffness and energy dissipationrelated properties. The characterization of materials plays an integral part in a wide range ofresearch problems especially those including computer simulations and the custom design andmanufacturing of components or structures involving the given materials. The acquisition of aHFVS instrument will have significant positive impact on Olin College?s research capability,undergraduate research training efforts, and curriculum. The instrument will directly support thetraining and education of undergraduates at Olin College where approximately 45% of studentsand 55% of the bioengineering, material science, and mechanical engineering majors are women.Research training is incorporated throughout the curriculum directly into project-based andlaboratory-based coursework. Students have numerous individual research opportunities to workwith faculty during the academic year and in the summer. The instrument will be specificallyutilized in a number of courses and will be particularly useful in the senior-year, engineeringcapstone course in which student teams tackle industry-sponsored projects.

该NSF MRI奖资助了用于材料表征的超高频粘弹性光谱（HFVS）仪器的收购。它特别适合于测量生物组织和人造聚合物的粘弹性，因为它可以在宽的激励频率范围内对小尺寸样品进行非接触、非破坏性的测量。HFVS仪器将立即用于目前的五个研究项目：1）创伤性脑损伤的计算机模拟; 2）确定微血管网络形成中主动力和被动力的作用; 3）欠驱动腿运动的动态表征; 4）微型航空器的栖息起落架的设计和制造;以及5）生物可降解，生物相容性共聚物的表征。该仪器在每个项目中的最大贡献是：1）在高应变率下人脑组织的本构模型，适用于爆炸响应模拟和分析; 2）表征一种新的细胞外基质仿生学，用于研究主动和被动机械环境对细胞的影响，3）用于毫米级机器人的欠驱动腿运动的材料可调的动态模型，4）刚度可调;阻尼，用于起落架机构的聚合物制造工艺，和5）用于控制一类用于医疗应用的环境友好的共聚物的性能的制造工艺。除了支持正在进行的研究外，该仪器还支持未来涉及相关材料的研究，并将开辟生物工程、材料科学和机械工程的新研究领域。HFVS仪器将大大增强奥林学院的计量能力，使其能够表征材料的刚度，从非常柔顺的、接近液体的（例如，通过定量测量机械刚度和能量耗散相关性能，将凝胶）转变为非常刚性。材料的表征在广泛的研究问题中起着不可或缺的作用，特别是那些包括计算机模拟和涉及给定材料的组件或结构的定制设计和制造.购买aHFVS仪器将对奥林学院产生重大的积极影响？的研究能力，本科研究培训工作，和课程。该仪器将直接支持奥林学院本科生的培训和教育，该学院约45%的学生和55%的生物工程、材料科学和机械工程专业的学生是女性。学生有许多个人的研究机会，在学年和夏季与教师一起工作。该工具将具体用于一些课程，并将在大四，engineeringcapstone课程中特别有用，在该课程中，学生团队解决行业赞助的项目。