MICRODIFFRACTION FROM NANOFIBERS

纳米纤维的微衍射

• 批准号: 7357756
• 负责人: DETLEF-M SMILGIES
• 金额: $ 2.64万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7357756
• 关键词: MICRODIFFRACTION; NANOFIBERS

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Electrospun fibers have diameters between a few hundred nanometers up to 1 micron. For the crystalline polymer PEO we would like to see how polymers are ordered inside the fiber. Scattering from such small objects will require a microfocused beam using x-ray capillaries and a He flightpath between sample and detector. A single quantum 4 detector should offer enough q-space range for the whole diffuse fiber pattern. The experiment fits in with the general microdiffraction developments at MacCHESS. We will need a total of 48 hours, one day for aligning the microfocusing setup, and 1 day for taking data.

这个子项目是利用由NIH/NCRR资助的中心拨款提供的资源的许多研究子项目之一。子项目和调查员(PI)可能从另一个NIH来源获得了主要资金，因此可能会出现在其他CRISE条目中。列出的机构是针对中心的，而不一定是针对调查员的机构。电纺纤维的直径从几百纳米到1微米不等。对于结晶聚合物PEO，我们想看看聚合物在纤维中是如何排列的。如此小的物体的散射将需要使用x射线毛细管的微聚焦光束，以及样品和探测器之间的He飞行路径。单个量子4探测器应该为整个漫射光纤图案提供足够的Q空间范围。该实验符合麦哲思的一般显微衍射学发展。我们总共需要48小时，一天用于对准微聚焦设置，一天用于采集数据。