Acquisition of an FTIR-Raman Spectrometer System to Probe Intermediate Phases in Disordered Systems

购买 FTIR-拉曼光谱仪系统来探测无序系统中的中间相

• 批准号: 0315491
• 负责人: Punit Boolchand
• 金额: $ 12万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0315491&HistoricalAwards=false
• 关键词: Acquisition; FTIR; Raman; Spectrometer; System

This grant provides support for the acquisition of a Fourier Transform Infrared Raman (FTIR) spectrometer system to probe intermediate phases in disordered systems at the University of Cincinnati. Network glasses have served as a paradigm of disordered systems. Raman scattering and modulated-differential-scanning-calorimetry experiments have shown that the onset of stressed rigidity in glasses involves two elastic phase transitions as a function of increasing cross-linking: transition-1 from an easily deformable network (floppy phase) to an isostatically rigid network (intermediate phase), and transition-2 from an intermediate phase to a stressed rigid phase. The term isostatic connotes absence of redundant bonds that would create stress. Intermediate phases represent self-organized phases of disordered systems in which stress (energy) is globally minimized. These ideas on self-organization of disordered molecular networks may extend to biological ones (protein folding) and electronic ones (high-T superconductors). The FTIR spectrometer acquisition will make possible, for the first time, the probing of IR-active modes. Furthermore, the FT-Raman module will permit probing glasses with optical gaps to include some of the technologically more important materials systems. From an educational point of view, the instrument acquisition will permit materials research of superhard thin-films, zeolites, nanoscale polarized light-emitting diodes, clays, ferroelectrics and silicon based structures in addition to glasses. %%%The instrument will impact directly the graduate thesis of more than 30 graduate students working on these materials across several departments in the Colleges of Engineering, and Arts and Sciences at the University of Cincinnati. In addition, the instrument will provide hands on experience to students in graduate courses. Undergraduate students at UC and at Northern Kentucky University will benefit from use of the facility in seniors and undergraduate research projects. Furthermore, the faculty will work with select groups of minority undergraduates, as part of a program established to interest these students into available research opportunities. Minority high school students will be recruited to participate in laboratory work during summer recess. The faculty will also give presentations to 4th through 7th graders and their parents, as part of the Family Science Academy outreach effort to interest children in the role of Science and Engineering in our lives.

该赠款为获取傅立叶大学的傅立叶变换红外拉曼（FTIR）光谱仪系统提供了支持，以探测辛辛那提大学无序系统中的中间阶段。网络眼镜已成为无序系统的范式。拉曼散射和调节差异扫描 - 扫描 - 扫描仪实验表明，玻璃中的压力刚度的开始涉及两个弹性相变，这是交联的增加的函数：从易于变形网络（松软相）到等于刚性刚性刚度刚度刚度相位（中间相），以及从一个互换相位的跃迁，并从一个互换阶段进行了压力。术语等坐骨表示缺乏会产生压力的冗余键。中间阶段代表无序系统的自组织阶段，其中应力（能量）在全球范围内最小化。这些关于无序分子网络自组织的想法可能会扩展到生物学网络（蛋白质折叠）和电子（高T超导体）。 FTIR光谱仪的采集将首次成为IR活性模式的探测。此外，FT-Raman模块将允许具有光学间隙的探测玻璃，以包括一些技术上更重要的材料系统。从教育的角度来看，仪器采集将允许对超级薄膜​​，沸石，纳米级偏振光发光二极管，粘土，铁电和基于硅的结构进行材料研究。该乐器将直接影响30多名工程学院的材料以及辛辛那提大学艺术与科学的研究生的研究生论文。此外，该乐器还将为研究生课程的学生提供经验。 UC和北肯塔基大学的本科生将受益于在老年人和本科研究项目中使用该设施。此外，该教师将与精选的少数族裔本科生一起工作，这是为这些学生引起这些学生提供可用研究机会的计划的一部分。夏季休息期间，将招募少数民族高中生参加实验室工作。作为家庭科学学院外展工作的一部分，该教师还将向4至7年级的父母发表演讲，以使孩子们对我们生活中的科学和工程作用感兴趣。