NIRT: Electrodeposition of Nanostructured Multilayers

该提案是为了响应“纳米科学与工程”（NSF 01-157），类别NIRT而提交的。将开发用于微机电系统（MEMS）的新型电沉积纳米结构多层合金。高灵敏度的磁传感器和微切削工具和模具的硬质材料将被制造。成分调制的多层合金提供了各种改进的性能，包括增强的巨磁阻薄膜磁传感器，和上级硬度高纵横比的微器件组件相比，其较粗糙的微观结构的对应物。预期层的纳米特征将有助于物理性质和微观结构的变化。 电化学加工将被用来制造薄和厚的纳米材料与脉冲波形。磁，电子和机械性能将被检查，包括电阻率，磁阻，直流/交流磁化和磁化率，和hardness.Investigators在LSU/CAMD，阿贡和布鲁克海文国家实验室将共同努力，对电沉积nanolayered合金的表征与学生参与在国家实验室。 学生外联将通过PI参与女工程师协会和全国黑人化学家和化学工程师专业发展组织进行。 所提出的电沉积技术有可能显着提高多层纳米结构的质量，特别是那些弯曲和凹陷的基板。

This proposal was submitted in response to the solicitation "Nanoscale Science and Engineering" (NSF 01-157), category NIRT. Novel electrodeposited nanostructured multilayered alloys for microelectromechanical systems (MEMS) will be developed. High sensitivity magnetic sensors and hard materials for micro-cutting tools and molds will be fabricated. Compositionally modulated multilayered alloys offer a variety of improved properties including enhanced giant magnetoresistance for thin film magnetic sensors, and superior hardness for high aspect ratio microdevice components, compared to their coarser microstructural counterparts. It is expected that the nanometric feature of the layers will contribute to a change in the physical properties and microstructure. Electrochemical processing will be used to fabricate both thin and thick nanomaterials with pulsed waveforms. Magnetic, electronic and mechanical properties will be examined, including electrical resistivity, magnetoresistivity, DC/AC magnetization and susceptibility, and hardness.Investigators at LSU/CAMD, Argonne and Brookhaven National Labs will worktogether towards characterization of the electrodeposited nanolayered alloys with studentinvolvement at the national labs. Student outreach will be conducted through PI participation in the Society of Women Engineers and the National Organization for the Professional Advancement of Black Chemists and Chemical Engineers. The proposed electrodeposition techniques have the potential to significantly improve the quality of multilayered nanostructures, especially those with curved and recessed substrates.