Picosecond laser for surface spectroscopy
用于表面光谱分析的皮秒激光器
基本信息
- 批准号:RTI-2020-00079
- 负责人:
- 金额:$ 10.93万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Research Tools and Instruments
- 财政年份:2019
- 资助国家:加拿大
- 起止时间:2019-01-01 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Funds are requested to urgently replace a pulsed laser that is the main component of my research program, and is the central piece of equipment associated with all of my NSERC-funded projects (through Discovery, Engage, CRD, USRA). An average of 10 students use this laser each year, and it operates approximately 450 hours each month. This laser has been well-maintained over the past 14 years, but is increasingly showing signs that it is aging. Its behaviour has already resulted in significant research delays. This is an urgent request to replace this critical component of my research program before it fails altogether.******The laser is used to generate ultra-short pulses of light tunable throughout the mid-infrared region. It enables fundamental studies of material surfaces, especially the interface between minerals (such as silica) or polymers and aqueous solutions. Understanding the structure molecules at such solid-liquid interfaces is of critical importance to environmental and geochemical processes such as rock weathering, erosion, and pollutant transport. Technologies such as DNA microarrays and drug delivery rely on precise control of the surface protonation state and surface charge. Polymers are used to produce many of the objects we encounter in our daily life. While their bulk properties make them stiff or pliable, transparent or opaque, an equal amount of attention goes into tailoring their surfaces to best interact with their intended surroundings. For example, materials such as acrylic are widely used in medical implants as they are strong and lightweight, but their surfaces are not naturally biocompatible. Our research seeks to understand how polymer surfaces are altered on the nanometre scale when they are placed next to liquids such as biological fluids. Surface modification is also important in textile processing, as plasma-treated fibres have increased adhesion to dyes, dramatically reducing or eliminating the need for solvents that are harmful for workers and the environment. Studying charged polymer surfaces also leads to improved understanding of how lightweight insulators withstand weathering for reliable overhead power distribution to Canadian towns and cities. ******This piece of equipment, a sophisticated surface analysis probe powered by the requested picosecond laser, provides many training opportunities for students as they design experiments, and tailoring its output for the particular surface under investigation. Interpreting the results of these experiments in order to extract the sought chemical structural information often entails modelling on various levels and the application of advanced data visualization strategies. The experiments enabled by this equipment therefore further fundamental science with direct short-term applications, and simultaneously train the next generation of scientists and engineers.
我迫切需要资金来替换脉冲激光器,这是我研究计划的主要组成部分,也是我所有nserc资助项目(通过Discovery, Engage, CRD, USRA)相关设备的核心部分。每年平均有10名学生使用这种激光器,每月大约运行450小时。这台激光器在过去的14年里得到了很好的维护,但越来越多地显示出老化的迹象。它的行为已经导致了重大的研究延误。这是一个紧急请求,在我的研究计划完全失败之前,替换掉这个关键部分。******激光被用来产生超短的光脉冲,可在整个中红外区域调谐。它可以对材料表面进行基础研究,特别是矿物(如二氧化硅)或聚合物与水溶液之间的界面。了解这种固液界面的结构分子对岩石风化、侵蚀和污染物运移等环境和地球化学过程至关重要。DNA微阵列和药物递送等技术依赖于对表面质子化状态和表面电荷的精确控制。聚合物被用来制造我们日常生活中遇到的许多物品。虽然它们的体积特性决定了它们的坚硬或柔韧,透明或不透明,但同样多的注意力放在剪裁它们的表面上,以最好地与它们预期的环境相互作用。例如,丙烯酸等材料因其坚固轻便而广泛用于医疗植入物,但其表面不是天然的生物相容性。我们的研究旨在了解聚合物表面在纳米尺度上是如何被改变的,当它们被放置在液体(如生物液体)旁边时。表面改性在纺织品加工中也很重要,因为等离子体处理的纤维增加了对染料的附着力,大大减少或消除了对工人和环境有害的溶剂的需要。研究带电聚合物表面也有助于提高对轻质绝缘体如何承受风化的理解,从而为加拿大城镇和城市提供可靠的架空配电。******这个设备是一个复杂的表面分析探针,由皮秒激光驱动,为学生提供了许多训练机会,因为他们设计实验,并根据所研究的特定表面定制其输出。解释这些实验的结果,以提取所寻求的化学结构信息,通常需要在各个层面上建模,并应用先进的数据可视化策略。因此,通过这种设备进行的实验可以直接短期应用于基础科学,同时培养下一代科学家和工程师。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Hore, Dennis其他文献
What is needed for implementing drug checking services in the context of the overdose crisis? A qualitative study to explore perspectives of potential service users
- DOI:
10.1186/s12954-020-00373-4 - 发表时间:
2020-05-12 - 期刊:
- 影响因子:4.4
- 作者:
Wallace, Bruce;van Roode, Thea;Hore, Dennis - 通讯作者:
Hore, Dennis
Point-of-care community drug checking technologies: an insider look at the scientific principles and practical considerations.
- DOI:
10.1186/s12954-023-00764-3 - 发表时间:
2023-03-25 - 期刊:
- 影响因子:4.4
- 作者:
Gozdzialski, Lea;Wallace, Bruce;Hore, Dennis - 通讯作者:
Hore, Dennis
Everywhere and for everyone: proportionate universalism as a framework for equitable access to community drug checking.
- DOI:
10.1186/s12954-022-00727-0 - 发表时间:
2022-12-20 - 期刊:
- 影响因子:4.4
- 作者:
Wallace, Bruce;van Roode, Thea;Burek, Piotr;Hore, Dennis;Pauly, Bernadette - 通讯作者:
Pauly, Bernadette
Substance Use Stigma and Community Drug Checking: A Qualitative Study Examining Barriers and Possible Responses.
- DOI:
10.3390/ijerph192315978 - 发表时间:
2022-11-30 - 期刊:
- 影响因子:0
- 作者:
Davis, Samantha;Wallace, Bruce;Van Roode, Thea;Hore, Dennis - 通讯作者:
Hore, Dennis
Variability in the unregulated opioid market in the context of extreme rates of overdose.
- DOI:
10.1016/j.drugalcdep.2022.109427 - 发表时间:
2022-06-01 - 期刊:
- 影响因子:4.2
- 作者:
Larnder, Ashley;Saatchi, Armin;Hore, Dennis - 通讯作者:
Hore, Dennis
Hore, Dennis的其他文献
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{{ truncateString('Hore, Dennis', 18)}}的其他基金
Nonlinear Vibrational Probes of Structure at Charged Polymer-Aqueous Interfaces
带电聚合物-水界面结构的非线性振动探针
- 批准号:
RGPIN-2020-06030 - 财政年份:2022
- 资助金额:
$ 10.93万 - 项目类别:
Discovery Grants Program - Individual
Nonlinear Vibrational Probes of Structure at Charged Polymer-Aqueous Interfaces
带电聚合物-水界面结构的非线性振动探针
- 批准号:
RGPAS-2020-00049 - 财政年份:2022
- 资助金额:
$ 10.93万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
Nonlinear Vibrational Probes of Structure at Charged Polymer-Aqueous Interfaces
带电聚合物-水界面结构的非线性振动探针
- 批准号:
RGPAS-2020-00049 - 财政年份:2021
- 资助金额:
$ 10.93万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
Environmental effects and algae resistance of silicone surfaces for enhanced understanding of polymer insulators
有机硅表面的环境影响和抗藻性,以增强对聚合物绝缘体的了解
- 批准号:
554462-2020 - 财政年份:2021
- 资助金额:
$ 10.93万 - 项目类别:
Alliance Grants
Nonlinear Vibrational Probes of Structure at Charged Polymer-Aqueous Interfaces
带电聚合物-水界面结构的非线性振动探针
- 批准号:
RGPIN-2020-06030 - 财政年份:2021
- 资助金额:
$ 10.93万 - 项目类别:
Discovery Grants Program - Individual
Monitoring the effects of temperature, electrical and chemical stress on silicone polymers
监测温度、电应力和化学应力对有机硅聚合物的影响
- 批准号:
571104-2021 - 财政年份:2021
- 资助金额:
$ 10.93万 - 项目类别:
Alliance Grants
Optical Parametric Generator
光参量发生器
- 批准号:
RTI-2021-00231 - 财政年份:2020
- 资助金额:
$ 10.93万 - 项目类别:
Research Tools and Instruments
Environmental effects and algae resistance of silicone surfaces for enhanced understanding of polymer insulators
有机硅表面的环境影响和抗藻性,以增强对聚合物绝缘体的了解
- 批准号:
554462-2020 - 财政年份:2020
- 资助金额:
$ 10.93万 - 项目类别:
Alliance Grants
Nonlinear Vibrational Probes of Structure at Charged Polymer-Aqueous Interfaces
带电聚合物-水界面结构的非线性振动探针
- 批准号:
RGPAS-2020-00049 - 财政年份:2020
- 资助金额:
$ 10.93万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
Integrating a low-barrier drug checking platform into public health responses to overdose
将低门槛药物检查平台纳入公共卫生应对过量用药的过程中
- 批准号:
549668-2020 - 财政年份:2020
- 资助金额:
$ 10.93万 - 项目类别:
Collaborative Health Research Projects
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