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Correlating optical properties of self-assembled metal nanoparticles with their fine nanoscale structure via co-registration of electron microscopy...

通过电子显微镜的共同配准将自组装金属纳米粒子的光学特性与其精细纳米级结构相关联......

基本信息

批准号：
2744388
负责人：
金额：
--
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2022
资助国家：
英国
起止时间：
2022 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2744388
关键词：
Correlating optical properties self assembled

项目摘要

Full Title: Correlating optical properties of self-assembled metal nanoparticles with their fine nanoscale structure via co-registration of electron microscopy and optical interrogation methodsAlthough much progress has been made on establishing the impact of optical stimuli on the behaviour of gold nanoparticle and molecular spacer systems, their nanoscale processes are still unknown. Many of the current hypotheses pertaining to the nanoscale structure are based on optical modelling and generalised assumptions on the constituents involved. This project aims to investigate in detail how these systems behave structurally, electronically and optically at the nanoscale, to optimise their stability and performance for sustainable chemistry and energy harvesting applications. To this end, a comparative study on the stability and mobility/diffusivity of plasmonic materials will be made. Typical plasmonic materials are coinage metals (Au, Ag, Cu), but these tend to be relatively 'soft', resulting in a high mobility in the surface atoms being observed under irradiation, limiting their practical applications. As a result, nanostructured materials tend to deform, yielding significantly altered structures from those hypothesised and modelled for understanding the sample. To overcome this, it is essential to develop a better understanding of how self-assembled monolayers of molecules alter the behaviour of metalsurfaces. Understanding this behaviour in more detail is crucial to the design of energetically favourable and thus more durable nanoarchitectures for plasmonic applications.

完整标题：通过电子显微镜和光学探询方法的共配准，将自组装金属纳米颗粒的光学性质与其精细的纳米级结构相关联虽然在建立光学刺激对金纳米颗粒和分子间隔物系统的行为的影响方面取得了很大进展，但它们的纳米级过程仍然是未知的。目前有关纳米结构的许多假设都是基于光学建模和对所涉及成分的一般假设。该项目旨在详细研究这些系统在纳米尺度下的结构、电子和光学行为，以优化其稳定性和性能，用于可持续化学和能量收集应用。为此，将对等离子体材料的稳定性和迁移率/扩散率进行比较研究。典型的等离子体激元材料是钴金属（Au、Ag、Cu），但这些往往相对“软”，导致在照射下观察到的表面原子的高迁移率，限制了它们的实际应用。因此，纳米结构材料往往会变形，产生明显改变的结构，从那些假设和建模的理解样品。为了克服这一点，它是必不可少的，以发展一个更好的理解如何自组装单层分子改变金属表面的行为。更详细地了解这种行为对于设计能量上有利的，因此更耐用的等离子体应用纳米结构至关重要。