Materials and synchrotron radiation
材料和同步辐射
基本信息
- 批准号:RGPIN-2014-04113
- 负责人:
- 金额:$ 4.95万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2014
- 资助国家:加拿大
- 起止时间:2014-01-01 至 2015-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We propose to conduct research in two intimately related fronts: (1) functional nanomaterials, fundamental properties and applications in energy, environment, drug delivery and metal- biomaterial interface and (2) development and application of synchrotron based advanced photon techniques, especially high energy resolution electron spectroscopy, high energy resolution X-ray (absorption and emission) spectroscopy, and microscopy in tracking the electronic behaviour of functional nanomaterials and composites, and as importantly, their desired properties and performance in a designed functionality. In (1), we will study a series of nanostructures with different composition, morphology, structure and size, involving two most technologically relevant elements, silicon and carbon, and many metal oxide semiconductors including titanium oxide, zinc oxide and tin oxide as well as nanometallic system and nanocarbon composites (e.g. Pt nanoparticles supported on carbon nanotube and graphene). We will continue to develop methodologies for controlled synthesis of nanomaterials with desired composition, size, morphology, crystal structure and in X-ray spectroscopy characterization (absorption and photoelectron) using a tunable X-ray source (synchrotron). In (2), we have developed a number of powerful techniques over the last ten years when the Canadian Light Source (CLS) became available for furthering in-depth investigation and development. These developments (e.g. X-ray excited optical luminescence in both the energy and time domain can track energy and charge transfer dynamics in nanostructures of different morphology, size and defect distribution), which I led as a Beam-team Leader of the SGM (250 -2 keV), PGM (10 – 250 eV) and SXRMB (1.8-10 keV) beamline at the Canadian Light Source, has greatly enhanced the capabilities in advancing program (1) described above. We will continue to perfect these capabilities – significant areas: (a) a state-of-the-art hard X-ray photoelectron spectroscopy station (up to 10 keV X-ray energy with excellent sensitivity and energy resolution) recently commissioned at the SXRMB beamline of the CLS will deliver unprecedented capabilities to investigate the underlayer and buried interface; (b) a state-of-the-art soft X-ray microprobe (speciation of elements relevant to environment and biomaterials, e.g. Ca, S, P, Cl and K, and catalysts, e.g. Rh, Pd and Ag) is under commission; (c) a state-of-the-art optical streak camera on the SGM beamline at CLS (first in all synchrotrons) to study the dynamics in the conversion of X-ray into visible light by nanostructures, which in turn reveals the electronic structure of the system; (d) both SGM and PGM at CLS are being upgraded with elliptically polarized undulators and KB mirrors to provide polarization tunability and microbeam capabilities, further enhancing the already highly productive facilities at the CLS; and (e) a state-of-the-art X-ray emission analyser based on the MiniXS design for high resolution X-ray fluorescence from the Ce L3 and Tb L3 edge. The analyzer using Ge(440) crystals on a Rowland circle combined with a pixel array detector (e.g. the Pilatus 100K PAD) provides a resolution of ~ 0.8 eV at ~ 4500 eV for X-ray emission (RIXS and RXES) studies. The proposed research will not only enhance the synergy of materials (properties, performance, etc.) and synchrotron analysis capabilities for my research but also provides unprecedented techniques to the CLS users’ community.
我们建议在两个密切相关的方面进行研究:(1)功能纳米材料、基本性质和在能源、环境、药物递送和金属-生物材料界面中的应用;(2)基于同步加速器的先进光子技术的发展和应用,特别是高能量分辨率电子光谱学、高能量分辨率X射线(吸收和发射)光谱和显微镜在跟踪功能纳米材料和复合材料的电子行为,以及同样重要的是,它们在设计的功能中的期望的性质和性能。在(1)中,我们将研究一系列具有不同组成、形态、结构和尺寸的纳米结构,涉及两种最具技术相关性的元素,硅和碳,以及许多金属氧化物半导体,包括氧化钛、氧化锌和氧化锡,以及纳米颗粒系统和纳米碳复合材料(例如,碳纳米管和石墨烯上负载的Pt纳米颗粒)。我们将继续开发具有所需成分、尺寸、形态、晶体结构的纳米材料的受控合成方法,并使用可调X射线源(同步加速器)进行X射线光谱表征(吸收和光电子)。在(2)中,我们在过去十年中开发了许多强大的技术,当时加拿大光源(CLS)可用于进一步深入研究和开发。这些发展(例如,能量和时间域中的X射线激发的光学发光可以跟踪不同形态、尺寸和缺陷分布的纳米结构中的能量和电荷转移动力学),我作为SGM的光束团队负责人领导了该项目(250 - 2 keV)、PGM(10 - 250 eV)和SXRMB(1.8-10 keV)光束线的改进,极大地增强了上述推进计划(1)的能力。我们将继续完善这些能力-重要领域:(a)一个最先进的硬X射线光电子能谱仪站(高达10 keV的X射线能量,具有出色的灵敏度和能量分辨率),将提供前所未有的能力来调查下层和掩埋界面;(B)最先进的软X射线微探针(与环境和生物材料有关的元素,如Ca、S、P、Cl和K,以及催化剂,如Rh、Pd和Ag的形态分析)正在进行中;(c)在CLS的SGM光束线上安装最先进的光学条纹相机(所有同步加速器中的第一个)研究纳米结构将X射线转换为可见光的动力学,从而揭示系统的电子结构;(d)天文台天文以及(e)基于MiniXS设计的最先进的X射线发射分析仪,用于来自Ce L3和Tb L3边缘的高分辨率X射线荧光。在罗兰圆上使用Ge(440)晶体的分析仪与像素阵列检测器(例如Pilatus 100 K PAD)结合,为X射线发射(RIXS和RXES)研究提供了在~ 4500 eV处~ 0.8 eV的分辨率。拟议的研究不仅将增强材料的协同作用(属性,性能等),和同步加速器分析能力,但也提供了前所未有的技术,以CLS用户的社区。
项目成果
期刊论文数量(0)
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Sham, Tsun其他文献
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{{ truncateString('Sham, Tsun', 18)}}的其他基金
Materials and synchrotron radiation
材料和同步辐射
- 批准号:
RGPIN-2014-04113 - 财政年份:2015
- 资助金额:
$ 4.95万 - 项目类别:
Discovery Grants Program - Individual
A thermal evaporation system for synthesizing one-dimensional nanoscale materials
一种合成一维纳米材料的热蒸发系统
- 批准号:
241179-2001 - 财政年份:2000
- 资助金额:
$ 4.95万 - 项目类别:
Research Tools and Instruments - Category 1 (<$150,000)
Canadian Synchrotron Radiation Facility (CSRF)
加拿大同步辐射装置 (CSRF)
- 批准号:
216955-1999 - 财政年份:2000
- 资助金额:
$ 4.95万 - 项目类别:
Major Facilities Access Grants
Electronic structure of matter in unusual dimensions and synchrotron radiation spectroscopy
异常尺寸物质的电子结构和同步辐射光谱
- 批准号:
42297-2000 - 财政年份:2000
- 资助金额:
$ 4.95万 - 项目类别:
Discovery Grants Program - Individual
Electronic structure of matter in unusual dimensions and synchrotron radiation spectroscopy
异常尺寸物质的电子结构和同步辐射光谱
- 批准号:
42297-1999 - 财政年份:1999
- 资助金额:
$ 4.95万 - 项目类别:
Discovery Grants Program - Individual
Additional gratings for the SGM beamline at the Canadian synchrotron radiation facility
加拿大同步加速器辐射设施 SGM 光束线的附加光栅
- 批准号:
228739-2000 - 财政年份:1999
- 资助金额:
$ 4.95万 - 项目类别:
Research Tools and Instruments - Category 1 (<$150,000)
Canadian Synchrotron Radiation Facility (CSRF)
加拿大同步辐射装置 (CSRF)
- 批准号:
216955-1999 - 财政年份:1999
- 资助金额:
$ 4.95万 - 项目类别:
Major Facilities Access Grants
X-ray powder diffractometer for the chemistry department at the University of Western Ontario
西安大略大学化学系X射线粉末衍射仪
- 批准号:
219662-1999 - 财政年份:1998
- 资助金额:
$ 4.95万 - 项目类别:
Research Tools and Instruments - Category 1 (<$150,000)
Electronic structure of bimetallic, semiconductor and metal silicide materials and synchrotron radiation
双金属、半导体和金属硅化物材料的电子结构与同步辐射
- 批准号:
42297-1995 - 财政年份:1998
- 资助金额:
$ 4.95万 - 项目类别:
Discovery Grants Program - Individual
Electronic structure of bimetallic, semiconductor and metal silicide materials and synchrotron radiation
双金属、半导体和金属硅化物材料的电子结构与同步辐射
- 批准号:
42297-1995 - 财政年份:1997
- 资助金额:
$ 4.95万 - 项目类别:
Discovery Grants Program - Individual
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