CAREER: Self-Assembled Nanoparticle Array for Spintronics and High Frequency Materials

这个项目的主题是理解和操纵自旋和磁性自组装纳米粒子阵列具有自旋电子和高频应用的潜力。研究方法包括材料合成、自组装、性能表征、器件制造和理论建模，以解决阻碍纳米磁性和自旋电子学进展的基本挑战。研究工作分为三个主题：1)基于液相合成的纳米级构建模块的开发，重点是半金属纳米颗粒，稀释磁性半导体（DMS）量子点（QDs）和多组分混合纳米颗粒；2)通过自组装和微加工技术的集成，制造和表征具有定制特性和相互作用的有序纳米粒子阵列；3)开发具有自旋电子和高频应用潜力的功能材料和器件。非技术更广泛的影响：拟议的工作包含一个强大的教育组成部分，其目标是培养具有多学科技能的研究人员，并将PI的研究专长整合到教育活动中。这些研究活动位于物理、化学和工程的交叉点，涉及材料合成、器件制造、结构和物理特性表征。这种结合为学生和博士后提供了跨学科和多技能的培训。通过与IBM研究人员的合作，选定的研究生和本科生将获得工业实习机会。这种接触将开阔他们的视野，为他们在学术或工业环境中的职业生涯做好准备。PI希望通过有针对性的招聘，增加女性和少数民族学生参与他的研究项目，为本科生提供研究经验，提供助教奖学金和实习机会。本系将招收本科生开发一套磁输运测量系统，该系统将用于本系的高级实验课程以及自旋极化输运研究的独特工具。在本科物理导论教学中，将采用系统的方法来激发学生的抽象思维和逻辑推理能力。通过开发动手材料科学工具和资源，研究成果和当前和未来的技术趋势将呈现给更广泛的受众，包括K-12科学教师和学生，针对布法罗地区内城和美洲原住民学校的高需求。

TechnicalThe theme of this project is to understand and manipulate spins and magnetismin self-assembled nanoparticle arrays with potential for spintronic and high frequency applications. Theresearch approach includes material synthesis, self-assembly, property characterization, device fabrication, and theoretical modeling to address fundamental challenges impeding progressin nanomagnetism and spintronics. Research efforts are grouped into three topics: 1) development ofnanoscale building blocks based on solution phase synthesis, with emphasis on half-metallicnanoparticles, diluted magnetic semiconductor (DMS) quantum dots (QDs) and multicomponent hybridnanoparticles; 2) fabrication and characterization of ordered nanoparticle arrays with tailored propertiesand interactions, created by the integration of self-assembly and microfabrication techniques; 3)development of functional materials and devices having potential for spintronic and high frequency applications. Non-TechnicalBroader Impact: The proposed work contains a strong educational component with a goal ofcultivating researchers with multidisciplinary skills and integrating the PI's research expertise into educational activities. These research activities lie at the intersection of physics, chemistry and engineering, involving material synthesis, device fabrication, and structural and physical property characterizations. This combination offers interdisciplinary and multi-skill training to students and postdocs. Through collaboration with IBM researchers, selected graduate and undergraduate students will be offered industrial internships. This exposure will broaden their horizons and prepare them forcareers in either academic or industrial settings. The PI expects to increase participation of women and minority students in his research program via targeted recruiting, in the form of providing research experience for undergraduates, assistantships and internships. Undergraduate students will be recruited to develop a magnetotransport measurement system, which will be used for the Department's Advanced Lab course as well as a unique tool for spin polarized transport studies. Systematic approaches will be employed to stimulate abstract thinking and logical reasoning in the teaching of undergraduate introductory physics. Research results and current and future technology trends will bepresented to a broader audience including K-12 science teachers and students, targeting high needs of inner city and Native American schools in the Buffalo area, through developing hands-on material science tools and resources.