The Synthesis, Characterization, and Surface Chemistry of Ultra-thin Oxide Films

超薄氧化膜的合成、表征和表面化学

基本信息

  • 批准号:
    9423707
  • 负责人:
  • 金额:
    $ 22.9万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1995
  • 资助国家:
    美国
  • 起止时间:
    1995-06-15 至 2000-05-31
  • 项目状态:
    已结题

项目摘要

Abstract 9423707 The goal of this project is the synthesis, characterization, and surface chemistry of well defined, ultra-thin (less than 10 nm) oxide films. Ultra-thin oxide films will be prepared on refractory single crystal substrates and characterized using an array of surface science techniques, including low energy electron diffraction, Auger electron spectroscopy, X-ray and ultraviolet photoelectron spectroscopy and, ion scattering spectroscopy, reflection absorption Fourier transform infrared spectroscopy, high resolution electron energy loss spectroscopy, scanning tunneling microscopy/atomic force microscopy, and temperature programmed desorption. Ordered, oxide surfaces in thin film form will be prepared on single-crystal, refractor metal substrates. This approach will be extended to include a variety of oxide and mixed-oxide types. A methodology utilizing these highly ordered, stoichiometric oxide thin films offers a promising new strategy for studying the surface chemistry of these materials in ways precluded utilizing the bulk materials and traditional techniques. %%% This study impacts the basic science of oxides and various practical technologies such as environmental waste remediation, device fabrication, and catalysis. Because of the highly insulating nature of many oxide materials, their surface geometrical and electronic properties, in general, have received much less attention than, for example, metal surfaces. To date, extensive work on the chemisorption and catalytic properties of oxide materials have been conducted, however, the microscopic reaction mechanisms occurring on oxide surfaces are still not well understood. The principle reason for this is that these studies have been performed primarily on powder samples. Therefore, the information represents an average of the various crystal faces exposed in addition to a variety of defects which are inevitably present in the powdered samples. On the other hand, high-purity single cr ystals of many oxide materials have been difficult to obtain and studies of these insulating materials have often encountered the difficulties associated with surface charging, sample heating and cleaning. Therefore, there is a clear need for the synthesis of high quality, thin oxide films. Structural and chemisorptive properties of oxide materials can be obtained by preparing well-defined, thin oxide films whose properties are identical to their single-crystal bulk counterparts, thereby facilitating surface chemical studies of these materials under controlled conditions.
摘要 9423707 该项目的目标是合成,表征和表面化学的定义,超薄(小于10纳米)氧化膜。超薄氧化膜将在耐火单晶衬底上制备,并使用一系列表面科学技术进行表征,包括低能电子衍射、俄歇电子能谱、X射线和紫外光电子能谱、离子散射能谱、反射吸收傅里叶变换红外能谱、高分辨率电子能量损失能谱、扫描隧道显微镜/原子力显微镜和程序升温脱附。有序的,薄膜形式的氧化物表面将在单晶,折射金属基板上制备。这种方法将扩展到包括各种氧化物和混合氧化物类型。利用这些高度有序,化学计量的氧化物薄膜的方法提供了一个有前途的新策略,研究这些材料的表面化学的方式排除利用散装材料和传统技术。 %这项研究影响了氧化物的基础科学和各种实用技术,例如环境废物修复、器件制造和催化。由于许多氧化物材料的高度绝缘性质,它们的表面几何和电子性质通常比例如金属表面受到少得多的关注。迄今为止,氧化物材料的化学吸附和催化性能的广泛工作已经进行,然而,发生在氧化物表面上的微观反应机制仍然没有很好地理解。其主要原因是这些研究主要针对粉末样品进行。 因此,该信息表示除了在粉末样品中不可避免地存在的各种缺陷之外暴露的各种晶面的平均值。另一方面,许多氧化物材料的高纯度单晶很难获得,这些绝缘材料的研究经常遇到与表面充电、样品加热和清洁相关的困难。因此,显然需要合成高质量的薄氧化物膜。氧化物材料的结构和化学吸附性质可以通过制备定义明确的薄氧化物膜来获得,其性质与其单晶体对应物相同,从而便于在受控条件下对这些材料进行表面化学研究。

项目成果

期刊论文数量(0)
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David Goodman其他文献

Addition of angiotensin-converting enzyme inhibitors to beta-blockers has a distinct effect on hispanics compared with african americans and whites with heart failure and reduced ejection fraction: a propensity score-matching study.
与患有心力衰竭和射血分数降低的非裔美国人和白人相比,在 β 受体阻滞剂中添加血管紧张素转换酶抑制剂对西班牙裔人有明显的影响:一项倾向评分匹配研究。
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    6
  • 作者:
    P. Eshtehardi;Mohan Pamerla;M. Mojadidi;David Goodman;Ninel Hovnanians;Anupam Gupta;Florentino Lupercio;J. Mazurek;R. Zolty
  • 通讯作者:
    R. Zolty
Obesity and Smoking as Risk Factors for Invasive Mechanical Ventilation in COVID-19 Respiratory Failure: a Retrospective, Observational Cohort Study
肥胖和吸烟作为有创机械通气治疗 COVID-19 呼吸衰竭的危险因素:一项回顾性、观察性队列研究
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    A. C. Costa Monteiro;R. Suri;I. O. Emeruwa;Robert J Stretch;R. Cortes Lopez;A. Sherman;Catherine C. Lindsay;J. Fulcher;David Goodman;A. Sapru;R. Buhr;Steven Y. Chang;Tisha Wang;N. Qadir
  • 通讯作者:
    N. Qadir
Acrodermatitis enteropathica–like eruption and failure to thrive as presenting signs of cystic fibrosis
  • DOI:
    10.1016/j.jaad.2006.04.038
  • 发表时间:
    2008-02-01
  • 期刊:
  • 影响因子:
  • 作者:
    Daniel Zedek;Dean S. Morrell;Matthew Graham;David Goodman;Pamela Groben
  • 通讯作者:
    Pamela Groben
The Criteria for Open Access
  • DOI:
    10.1016/j.serrev.2004.09.009
  • 发表时间:
    2004-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    David Goodman
  • 通讯作者:
    David Goodman
Drug-induced torsades de pointes in an underserved urban population. Methadone: is there therapeutic equipoise?
在服务不足的城市人口中,药物引起的尖端扭转型室速。
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    1.8
  • 作者:
    Jorge Romero;S. Baldinger;David Goodman;Krysthel Engstrom;Carolina R. Valencia;A. Golive;F. Medrano;S. Rangasamy;M. Makkiya;J. Fisher;J. Gross;A. Krumerman;Soo G. Kim;Mario J. Garcia;L. Di Biase;K. Ferrick
  • 通讯作者:
    K. Ferrick

David Goodman的其他文献

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{{ truncateString('David Goodman', 18)}}的其他基金

Collaborative Proposal: Wireless Internet Center for Advanced Technology
合作提案:无线互联网先进技术中心
  • 批准号:
    0303678
  • 财政年份:
    2003
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
ITR: Power Efficient Multimedia Wireless Communications
ITR:节能多媒体无线通信
  • 批准号:
    0219822
  • 财政年份:
    2002
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Continuing Grant
U.S.-Japan Cooperative Science Program: The Physical and Chemical Properties of Nanosized Metal Clusters on Oxide Surfaces
美日合作科学计划:氧化物表面纳米金属簇的物理和化学性质
  • 批准号:
    0136194
  • 财政年份:
    2002
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
The Second International Workshop on Oxide Surfaces (IWOX-2); Taos, New Mexico; January 15-19, 2001
第二届国际氧化物表面研讨会(IWOX-2);
  • 批准号:
    0097054
  • 财政年份:
    2001
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
NSF IUCRC for Wireless Information Networks: TIE Program between University of Calfornia San Diego and The State University of New Jersey
NSF IUCRC 无线信息网络:加州大学圣地亚哥分校和新泽西州立大学之间的 TIE 计划
  • 批准号:
    9714727
  • 财政年份:
    1997
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
CISE Research Instrumentation: Parallel Computing For Wireless Networking Research
CISE 研究仪器:无线网络研究的并行计算
  • 批准号:
    9729863
  • 财政年份:
    1997
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
Realizability of Potential of Multiuser Detection
多用户检测潜力的可实现性
  • 批准号:
    9416209
  • 财政年份:
    1994
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
1992 Gordon Research Conference on Catalysis
1992 年戈登催化研究会议
  • 批准号:
    9210468
  • 财政年份:
    1992
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Standard Grant
I/UCRC for Wireless Information Networks
无线信息网络的 I/UCRC
  • 批准号:
    9111456
  • 财政年份:
    1991
  • 资助金额:
    $ 22.9万
  • 项目类别:
    Continuing Grant

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