Collaborative Research: Manufacturing of Complex Optical Elements for Advanced Imaging Systems

合作研究：先进成像系统复杂光学元件的制造

• 批准号: 2210394
• 负责人: Matthew Davies
• 金额: $ 29.9万
• 依托单位: University of North Carolina at Charlotte
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-05-01 至 2025-04-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2210394&HistoricalAwards=false
• 关键词: Collaborative; Research; Manufacturing; Complex; Optical

This grant supports research that contributes new knowledge related to an advanced manufacturing process that is required for creating complex optical components. It will promote the advancement of science and strengthen our national capabilities for manufacturing of advanced optical systems. Ultra-precision machines utilize single crystal diamond tools to manufacture optics with dimensional accuracies that are on the order of a small fraction of the diameter of a human hair, approximately one ten-millionth of one meter. New ultra-precision machine technology enables the manufacture of optics of nearly arbitrary shape, known as freeform optics. This freedom allows optics designers to think in entirely new ways. As one of the enabling technologies for freeform optics, ultra-precision machining is poised to play a major role in an optical revolution. A prime application area of this technology is the manufacture of optics for thermal imaging and night vision systems. This award supports fundamental research needed for the cost-effective manufacture of freeform optics. While the immediate impact area is thermal imaging, the research has broader application to many industry sectors critical to the U.S. economic sectors including solar energy, healthcare, biomedical, aerospace, defense and automotive. This research crosses the disciplines of manufacturing, mechanical engineering, materials science and optical science and the multi-disciplinary approach is used to broaden participation of underrepresented groups in research and positively impact engineering education.The research objective of this researched study is to test the hypothesis that there is a shift in material removal mechanism at increased cutting velocities when single point diamond machining brittle single crystal materials such as germanium or silicon. Ultra-precision diamond machining experiments will be performed at the University of North Carolina at Charlotte that are designed to explore the effect of increased cutting velocities on the governing cutting mechanics. The study will focus on 1) high speed diamond flycutting, 2) high speed orthogonal cutting using a fast tool servo to allow rapid tool withdrawal from the cut, and 3) ohmic contact cutting to explore the possibility of a material phase change. High bandwidth dynamic forces, chip morphology and changes in material phase, if any, will be quantified. The surface and subsurface of the machined specimens will be characterized by atomic force microscopy, channeling Rutherford backscattering spectrometry, Raman spectroscopy and cross-sectional transmission electron microscopy to be performed at Oklahoma State University and Los Alamos National Laboratory.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该赠款支持研究，该研究贡献了与高级制造过程相关的新知识，这是创建复杂的光学组件所需的。它将促进科学的进步，并增强我们在高级光学系统制造的国家能力。超精确的机器利用单晶钻石工具来制造具有尺寸精确度的光学元件，这些光学量是在人毛直径的一小部分（约100亿个米）的一小部分。 新的超精确机器技术可以制造几乎任意形状的光学器件，称为Freeform Optics。 这种自由允许光学设计师以全新的方式思考。 作为自由形式光学技术的能力技术之一，超精确的加工有望在光学革命中发挥重要作用。 该技术的主要应用领域是用于热成像和夜视系统的光学器件的制造。该奖项支持自由形式光学的成本效益所需的基础研究。 虽然直接影响区域是热成像，但该研究对许多行业的应用更广泛，对美国经济部门至关重要，包括太阳能，医疗保健，生物医学，航空航天，国防和汽车。 This research crosses the disciplines of manufacturing, mechanical engineering, materials science and optical science and the multi-disciplinary approach is used to broaden participation of underrepresented groups in research and positively impact engineering education.The research objective of this researched study is to test the hypothesis that there is a shift in material removal mechanism at increased cutting velocities when single point diamond machining brittle single crystal materials such as germanium or silicon.超精确的钻石加工实验将在北卡罗来纳大学的夏洛特大学进行，旨在探索切割速度增加对切割机制的效果。这项研究将重点放在1）高速钻石苍蝇下，2）使用快速工具伺服器的高速正交切割，以便从切割中快速提取工具，3）欧姆接触切割以探索材料相变的可能性。高带宽动态力，芯片形态和材料相的变化（如果有）将被量化。 The surface and subsurface of the machined specimens will be characterized by atomic force microscopy, channeling Rutherford backscattering spectrometry, Raman spectroscopy and cross-sectional transmission electron microscopy to be performed at Oklahoma State University and Los Alamos National Laboratory.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts审查标准。

项目成果

Face Turning of Single Crystal (111)Ge: Cutting Mechanics and Surface/Subsurface Characteristics

单晶 (111)Ge 的端面车削：切削力学和表面/次表面特性

• DOI: 10.1115/1.4057054
• 发表时间: 2023
• 期刊: Journal of Manufacturing Science and Engineering
• 作者: Zare, A.;Tunesi, M.;Harriman, T. A.;Troutman, J. R.;Davies, M. A.;Lucca, D. A.
• 通讯作者: Lucca, D. A.