MRI: Acquisition of a Scanning Tunneling Microscope for Development and Analysis of Nanostructures

MRI：购买扫描隧道显微镜用于纳米结构的开发和分析

• 批准号: 0216171
• 负责人: Diana Huffaker
• 金额: $ 19.6万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0216171&HistoricalAwards=false
• 关键词: MRI; Acquisition; Scanning; Tunneling; Microscope

0216171HuffakerThe PIs propose the addition of an ultra-high vacuum (UHV) scanning tunneling microscope (STM) to the materials growth and characterization facility located at the University of New Mexico (UNM) Center for High Technology Materials (CHTM). The STM is capable of unprecedented resolution in probing nanometer scale atomic organizations and their local electronic structures. The high level of stability and positioning accuracy also makes the STM a capable nano-scale surface patterning tool. The UNM has a strong infrastructure for advanced materials research, including extensive growth and analysis facilities described below. The microscope will complement the PIs existing capabilities by allowing them to quantify materials structures and surface dynamics.Advanced materials for nanotechnology is one of their key interest areas at UNM. Very broad support for purchasing the STM capability is indicated by the level of cost-sharing from their Vice-Provost for Research, the Office of the Dean for the School of Engineering and the Director of CHTM. The UHV-STM facility will be physically located at CHTM, where they have excellent, permanent staff for system calibration and maintenance. Any UNM faculty will have access to increase participation of students and faculty in the emerging field of nanotechnology and advanced materials. To ensure the University-wide impact, the STM will be a multi-user facility for several departments (e.g., Electrical & Computer Engineering, Chemical & Nuclear Engineering, Physics & Astronomy, and Chemistry) and research centers (e.g., Center for High Technology Materials and Center for Micro-Engineered Materials). The new surface science capability will increase the PIs participation in nanotechnology and broaden their basis for attracting subsequent grants and collaborations.The proposed instrumentation will be the 1st UHV-STM at UNM with expansion ports to accommodate vacuum diagnostics and growth/deposition chambers. The instrumentation will facilitate research efforts at UNM that range from crystal growth to inorganic synthesis. The proposal highlights several applications of the variable-temperature UHV-STM at UNM such as selective growth of SiGe on nanometer size silicon structures, cross-sectional and atom-tracking STM, incorporation of magnetic atoms into QDs and nano-scale positioning of QDs. One of the immediate areas of impact is strain-driven, self-assembly of quantum dots (QDs) using both molecular beam epitaxy (MBE) and metalorganic chemical vapor deposition (MOCVD).The proposed acquisition of the UHV-STM contributes to the School of Engineering initiative to launch a degree program in nanomaterials science and engineering (NSE). The School recognizes that this emerging field bodes rapid growth and increased demand for trained labor. Education in NSE will foreseeably translate to students' increased career potential. Within the scope of the School initiative, the proposed instrumentation will produce a knowledge base for course development and an attraction to recruit underrepresented students. The research education provides a direct vehicle to prepare undergraduate and graduate students for a career in NSE.

0216171 Huffaker PI建议在位于新墨西哥州大学（UNM）高技术材料中心（CHTM）的材料生长和表征设施中增加超高真空（UHV）扫描隧道显微镜（STM）。STM在探测纳米尺度的原子组织及其局域电子结构方面具有前所未有的分辨率。高水平的稳定性和定位精度也使STM成为一种有能力的纳米级表面图案化工具。 UNM拥有先进材料研究的强大基础设施，包括下文所述的广泛增长和分析设施。该显微镜将补充PI现有的能力，使他们能够量化材料结构和表面动力学。纳米技术的先进材料是他们在UNM的主要兴趣领域之一。 研究副教务长、工程学院院长办公室和CHTM主任的费用分摊水平表明，对购买STM能力的支持非常广泛。UHV-STM设施将位于CHTM，在那里他们有优秀的长期工作人员进行系统校准和维护。任何UNM教师将有机会增加学生和教师在纳米技术和先进材料的新兴领域的参与。为了确保大学范围内的影响，STM将是一个多用户设施的几个部门（例如，电子计算机工程、化学核工程、物理天文学和化学）和研究中心（例如，高技术材料中心和微工程材料中心）。新的表面科学能力将增加PI在纳米技术中的参与，并扩大其基础，以吸引后续的赠款和合作。拟议的仪器将是UNM的第一个UHV-STM，具有扩展端口，以适应真空诊断和生长/沉积室。仪器将促进UNM的研究工作，从晶体生长到无机合成。该提案强调了UNM变温UHV-STM的几个应用，例如在纳米尺寸的硅结构上选择性生长SiGe，横截面和原子跟踪STM，将磁性原子并入QD和QD的纳米级定位。其中一个直接的影响领域是应变驱动的，自组装的量子点（QD）使用分子束外延（MBE）和金属有机化学气相沉积（MOCVD）。拟议收购的UHV-STM有助于工程学院的倡议，推出纳米材料科学与工程（NSE）学位课程。学校认识到，这一新兴领域预示着快速增长和对训练有素的劳动力的需求增加。NSE的教育将必然转化为学生职业潜力的增加。在学校倡议的范围内，拟议的工具将为课程开发提供一个知识基础，并吸引招收代表性不足的学生。研究教育提供了一个直接的工具，准备本科生和研究生在NSE的职业生涯。