MRI/Engineering Equipment Proposal: Acquisition of a Multi-user Imaging Ellipsometer

摘要建议编号：CTS-0318241首席研究员：约翰·霍普金斯大学的K.Stebe这笔赠款用于购买成像椭偏仪。通过将偏振光照射到表面并测量反射光束的偏振变化，椭偏仪以埃级分辨率确定固体表面上的薄膜厚度。成像椭偏测量法通过将光束聚焦到高分辨率的CCD相机上来执行这些测量，从而在400 x 500微米的区域内提供1微米的空间分辨率，从而允许在该分辨率下构建表面拓扑图。这种表面拓扑的测量在从金膜的溅射涟漪到用于控制药物释放的聚合物表面上吸附的蛋白质膜的演变等学科中非常有用。因此，这一工具将推动JHU几个研究小组的研究和教育工作。化学与生物分子工程系的本科生和研究生将在纳米技术、表面科学和生物工程等一般领域的合作项目中使用成像椭偏仪和材料科学与工程。共同投资促进机构有有效合作的记录。其中三个合作PI为化学与分子工程系和材料科学与工程系之间的本科生集中开设了新课程。所有合作的私人投资机构都作出了协调一致的努力，在其研究方案中增加了妇女和代表性不足的少数族裔学生的数量。在本科阶段，学生通过学分的研究项目，以及通过我们的MRSEC和化学与生物分子工程系管理的REU计划，被吸引到研究中。通过这些渠道，共同督学共同指导了60名本科生的研究项目，其中31名是女性，4名来自其他代表性不足的群体。在博士和研究生阶段，也积极招聘妇女和少数群体。这一重点明显体现在接受这些方案培训的妇女和任职人数不足的群体的人数上；在30名博士和博士后研究人员中，一半是女性，两名来自其他任职人数不足的群体。购买这些设备将支持共同的研究和推广工作。*由主要研究仪器(MRI)计划和界面、运输和热力学计划共同支持

ABSTRACTProposal No. CTS-0318241Principal Investigator: K. Stebe, Johns Hopkins UniversityThis grant is for the acquisition of an Imaging Ellipsometer. By impinging polarized light on a surface and measuring the change in polarization of the reflected beam, ellipsometers determine film thicknesses on solid surfaces with angstrom level resolution. Imaging ellipsometry performs these measurements by focusing the beam onto a high resolution CCD camera to provide spatial resolution of 1micron over areas as large as 400 x 500 microns, allowing for the construction of surface topological maps at that resolution.The measurement of such surface topologies is useful in disciplines ranging from sputter rippling of gold films to the evolution of adsorbed protein films on polymeric surfaces used for controlled drug release. Therefore, this instrumentation will advance research and educational efforts in several research groups at JHU. Undergraduate and graduate students from the departments of Chemical & Biomolecular Engineering will use the imaging ellipsometer and Materials Science & Engineering in projects administered by the co-PIs in the general areas of nanotechnology, surface science and bioengineering. The co-PIs have a record of effective collaboration. Three of the co-PIs have created new courses for an undergraduate concentration between the departments of Chemical & Biomolecular Engineering and Materials Science & Engineering. All of the co-PIs have made a concerted effort at increasing the numbers of women and underrepresented minorities students in their research programs. At the undergraduate level, students are drawn into research via research projects for credit, and via REU programs administered through our MRSEC and in the department of Chemical & Biomolecular Engineering. Through these channels, the co-PIs together have directed 60 undergraduates in research projects, of whom 31 were female and 4 were drawn from other under-represented groups. At the Ph.D and post-graduate levels, women and minorities are also actively recruited. This focus is apparent in the numbers of women and members of under-represented groups being trained in these programs; of the 30 Ph.Ds and postdoctoral researchers, half have been women, and two were drawn from other under-represented groups. The acquisition of this equipment will support the co-PIs efforts in their research and outreach efforts.* Jointly supported by the Major Research Instrumentation (MRI) program and the Interfacial, Transport and Thermodynamics Program