MRI: Acquisition of an Atom Probe for Materials Research

MRI：获取用于材料研究的原子探针

• 批准号: 0821168
• 负责人: James Speck
• 金额: $ 75万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2010-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0821168&HistoricalAwards=false
• 关键词: MRI; Acquisition; Atom; Probe; Materials

The proposed atom probe instrument will address and solve a wide range of fundamental and applied problems in ongoing and future research at the University of California, Santa Barbara. The atom probe instrument is capable of revealing the location and identifying most of the atoms in a material. The atom probe will be used to solve key problems in atomic scale structure and chemistry for ~15-25 research groups in Materials, Electrical Engineering, Chemical Engineering, Physics, Chemistry, and Geology. It will be used to analyze the three-dimensional structure and composition of materials for light emission and electronic devices, materials systems for advanced propulsion, energy generation, including gas turbines and nuclear reactors, and hypersonic flight. Dedicated space will be provided for the atom probe in UCSB?s Microscopy and Microanalysis Facility. The atom probe is an ideal tool for introducing future scientists to the wonders of the atomic scale structure of nature. We will offer a new course in our characterization course sequence. We will host a teachers and undergraduate students to work with atom probe techniques. We will take advantage of the new visualization capabilities of the UCSB Allosphere, which is a sphere, spanning three stories, which provides a fully immersive visual and audio environment. and is an integral component of UCSB?s California Nano Systems Institute.The proposed atom probe instrument will address and solve a wide range of fundamental and applied materials problems in ongoing and future research at the University of California, Santa Barbara (UCSB). It will allow researchers at UCSB to perform three-dimensional, atomic resolution, compositional imaging and analysis with a local electron atom probe (LEAP). The LEAP will have laser pulsing capabilities for the analysis of low electrical conductivity materials including semiconductors, ceramics and geological materials. The atom probe will be used to solve key problems in atomic scale structure and chemistry for ~15-25 research groups in Materials, ECE, Chemical Engineering, Physics, Chemistry, and Geology and other departments at UCSB. In the area of electronic materials, the atom probe instrument will be used to solve key problems in interfacial chemistry and abruptness, alloy composition and homogeneity, and dopant and impurity distributions in wide bandgap semiconductors for light emission and electron devices, epitaxial materials for spintronics and materials for novel CMOS devices. In the area of nuclear materials, atom probe tomography will be used extensively to the study of nanoscale precipitates in nuclear steels. The structural materials group will benefit from a LEAP system for their work on high temperature materials systems for advanced propulsion, energy generation, including gas turbines and nuclear reactors, and hypersonic flight. Dedicated space will be provided for the atom probe in UCSB?s Microscopy and Microanalysis Facility. The atom probe is an ideal tool for introducing future scientists to the wonders of the atomic scale structure of nature. We will offer a new course in our characterization course sequence. We will host a secondary school teacher and an undergraduate student to work on atom probe techniques. We will take advantage of the new visualization capabilities of the UCSB Allosphere, which is an integral component of UCSB?s California Nano Systems Institute.

拟议中的原子探针仪器将在圣巴巴拉的加州大学正在进行的和未来的研究中处理和解决广泛的基础和应用问题。 原子探针仪器能够揭示材料中大部分原子的位置并识别它们。 原子探针将用于解决材料，电气工程，化学工程，物理，化学和地质等约15-25个研究小组的原子尺度结构和化学关键问题。 它将用于分析光发射和电子设备材料的三维结构和组成，先进推进材料系统，能源发电，包括燃气轮机和核反应堆，以及高超音速飞行。 UCSB将为原子探针提供专用空间？显微镜和微量分析设施。 原子探针是一种理想的工具，可以向未来的科学家介绍自然界原子尺度结构的奇迹。 我们将在我们的表征课程序列中提供一个新的课程。 我们将举办一个教师和本科生与原子探针技术的工作。 我们将利用UCSB Allosphere的新可视化功能，这是一个球体，跨越三层，提供了一个完全沉浸式的视觉和音频环境。是UCSB的一个组成部分拟议中的原子探针仪器将在加州大学圣巴巴拉分校（UCSB）正在进行的和未来的研究中处理和解决广泛的基础和应用材料问题。 它将允许UCSB的研究人员使用本地电子原子探针（LEAP）进行三维，原子分辨率，成分成像和分析。 LEAP将具有激光脉冲能力，用于分析低电导率材料，包括半导体，陶瓷和地质材料。 原子探针将用于解决UCSB材料，ECE，化学工程，物理，化学和地质等部门的约15-25个研究小组的原子尺度结构和化学的关键问题。 在电子材料领域，原子探针仪器将用于解决界面化学和结晶性、合金成分和均匀性、用于发光和电子器件的宽带隙半导体、用于自旋电子学的外延材料和用于新型CMOS器件的材料中的掺杂剂和杂质分布等关键问题。 在核材料领域，原子探针层析成像技术将广泛应用于核钢中纳米级析出相的研究。 结构材料组将受益于LEAP系统，用于先进推进，能源发电，包括燃气轮机和核反应堆以及高超音速飞行的高温材料系统。 UCSB将为原子探针提供专用空间？显微镜和微量分析设施。 原子探针是一种理想的工具，可以向未来的科学家介绍自然界原子尺度结构的奇迹。 我们将在我们的表征课程序列中提供一个新的课程。 我们将接待一名中学教师和一名大学生从事原子探针技术的工作。 我们将利用UCSB Allosphere的新的可视化功能，这是UCSB？美国加州纳米系统研究所。