CAREER: Development of a new SPM imaging mode for mapping and measuring the vibrational response of magnetic nanomaterials from the ferromagnetic to superparamagnetic regime

Jayne C教授路易斯安那州立大学农业和机械学院的Garno得到化学系分析和表面化学职业计划的支持，开发了一种新的扫描探针显微镜方法，称为“磁性样品调制”，用于在纳米尺度上绘制磁畴。 该项目旨在：（1）评估从超顺磁性到规则体铁磁性范围内纳米材料的尺寸缩放效应;（2）研究材料成分对纳米材料磁矩的影响;（3）区分和绘制磁性和非磁性纳米颗粒;（4）在单个细胞水平上实现磁成像;以及（5）将新开发的成像方法应用于铁蛋白等铁磁蛋白的动态研究。 颗粒形状、尺寸和表面结构对磁性的影响的基本知识对于理解纳米磁性材料的标度效应是必不可少的。 这些结果将在纳米科学、表面化学和生物技术领域产生巨大的潜在影响。 扫描探针显微镜成像概念将在几门课程中介绍，学生将在进行基础研究的同时接受最先进仪器的培训。

Professor Jayne C. Garno of Louisiana State University & Agricultural and Mechanical College is supported by the Analytical and Surface Chemistry CAREER Program in the Division of Chemistry to develop a new scanning probe microscopy method, termed "Magnetic Sample Modulation" for mapping magnetic domains at nanometer dimensions. The project aims to: (1) evaluate the size scaling effects of nanomaterials in a range from superparamagnetism to regular bulk ferromagnetism; (2) study the effect of material composition on magnetic moments of nanomaterials; (3) differentiate and map magnetic and non-magnetic nanoparticles; (4) implement magnetic imaging at the level of individual cells; and (5) apply the newly developed imaging method for dynamic studies with ferromagnetic proteins such as ferritin. Fundamental knowledge of the effect of particle shape, size, and surface structure, on the magnetic properties is essential for understanding the scaling effects of nanomagnetic materials. The results will have a high potential impact in the fields of nanoscience, surface chemistry and biotechnology. Scanning probe microscopy imaging concepts will be introduced in several courses, and students will receive training on state-of-the-art instrumentation while conducting fundamental research.