Acquisition of a Viscoelastic Characterization Facility

购置粘弹性表征设备

• 批准号: 0320699
• 负责人: Michael Klein
• 金额: $ 31.7万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0320699&HistoricalAwards=false
• 关键词: Acquisition; Viscoelastic; Characterization; Facility

This grant provides funds for a shared Viscoelastic Characterization Facility (VCF) for the characterization of viscoelastic properties of soft materials at the University of Pennsylvania. The VCF has research studying materials ranging from synthetic gels and colloids to biological tissues and carbon nanotubes. The VCF will characterize soft materials by rheologic methods that assist in determining their response to mechanical deformation. The nature of viscoelastic characterization (or the field of rheology) is such that no single instrument can measure the different geometries and extent of deformation that are appropriate for desired experimental systems. Accordingly, this grant covers five instruments to span a range wide enough to be useful to the maximum number of researchers. Specifically, two complex instruments will be developed by groups with specialized needs and expertise: 1) A customized version of the ThermoHaake Rheoscope Imaging Rheometer - to be built in collaboration with MRSEC faculty that requires single molecule imaging within polymer networks. The current version of the Rheoscope will be modified to mount on a Zeiss inverted microscope with image deconvolution capability. 2) A Bohlin C-VOR-200 Rheometer modified with transparent sample housing to interface with existing scattering facilities, such as a dynamic light scattering system, allowing more powerful capabilities to relate molecular structures to macroscopic properties than possible with existing instruments. Three other instruments will serve a broad range of users whose needs are met by commercial instruments. These instruments will differ in types of samples for which they are best suited (e.g. solid versus fluid), the type of deformation they apply, the temperature range over which they operate, and the volume required for measurement.The equipment will be integrated into existing courses in the Bioengineering and Physics Departments to train both undergraduate and graduate students and will be used in the NSF Research Experience for Undergraduates Program to train additional undergraduates and provide outreach to underrepresented minorities. The management plan for the facility provides additional plans for training and outreach to both underrepresented students and industry. The VCF would also impact other communities at PENN, as seen in the range of investigators involved in this proposal which include 22 groups in 12 departments within the Schools of Arts and Sciences, Engineering and Applied Sciences, Medicine, and the Children's Hospital of Pennsylvania.

这笔赠款为宾夕法尼亚大学的共享粘弹性表征设施（VCF）提供资金，用于表征软材料的粘弹性特性。 VCF 的研究范围涵盖从合成凝胶和胶体到生物组织和碳纳米管的材料。 VCF 将通过流变学方法来表征软材料，以帮助确定其对机械变形的响应。粘弹性表征（或流变学领域）的本质是，没有任何单一仪器可以测量适合所需实验系统的不同几何形状和变形程度。因此，这笔赠款涵盖了五种工具，其范围足够广泛，足以对最大数量的研究人员有用。具体来说，具有特殊需求和专业知识的团队将开发两种复杂的仪器： 1) ThermoHaake Rhescope 成像流变仪的定制版本 - 将与需要在聚合物网络内进行单分子成像的 MRSEC 教师合作构建。当前版本的流变仪将进行修改，以安装在具有图像反卷积功能的蔡司倒置显微镜上。 2) Bohlin C-VOR-200 流变仪经过改进，配备透明样品外壳，可与现有散射设施（例如动态光散射系统）连接，与现有仪器相比，具有更强大的能力将分子结构与宏观特性联系起来。其他三种仪器将服务于商业仪器可以满足其需求的广泛用户。这些仪器在最适合的样品类型（例如固体与液体）、它们应用的变形类型、它们运行的​​温度范围以及测量所需的体积方面有所不同。该设备将集成到现有的生物工程和物理系的课程用于培训本科生和研究生，并将用于 NSF 本科生研究体验计划，以培训更多本科生并为代表性不足的少数族裔提供服务。该设施的管理计划为代表性不足的学生和行业提供了额外的培训和推广计划。 VCF 还将影响 PENN 的其他社区，从参与该提案的调查人员范围即可看出，其中包括艺术与科学学院、工程与应用科学学院、医学院以及宾夕法尼亚州儿童医院内 12 个部门的 22 个小组。