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

ABSTRACTProposal没有。csts -0318241首席研究员：K. Stebe，约翰霍普金斯大学。这笔拨款用于购置一台成像椭圆计。通过将偏振光照射在一个表面上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。成像椭偏仪通过将光束聚焦到高分辨率CCD相机上来进行这些测量，在400 x 500微米的区域上提供1微米的空间分辨率，允许在该分辨率下构建表面拓扑地图。这种表面拓扑结构的测量在从金膜的溅射波纹到用于控制药物释放的聚合物表面吸附蛋白质膜的演变等学科中都是有用的。因此，该仪器将促进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项目中使用成像椭偏仪和材料科学与工程。这些合作项目有有效合作的记录。其中三家合作学院在化学与生物分子工程系和材料科学与工程系之间为本科生开设了新课程。所有的合作学院都在努力增加女性和少数族裔学生在其研究项目中的人数。在本科阶段，学生可以通过研究项目获得学分，也可以通过MRSEC和化学与生物分子工程系管理的REU项目进行研究。通过这些渠道，共同项目负责人共指导了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，也积极招募妇女和少数民族。在这些项目中接受培训的妇女和代表性不足群体成员的数量明显体现了这一重点；在30名博士和博士后研究人员中，有一半是女性，还有两人来自其他代表性不足的群体。该设备的采购将支持合作项目的研究和推广工作。*由主要研究仪器（MRI）项目和界面、传输和热力学项目共同支持

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