Exploring Multinary Nanoparticles by Combinatorial Sputtering into Ionic Liquids and Advanced Transmission Electron Microscopy

通过组合溅射到离子液体和先进的透射电子显微镜探索多元纳米颗粒

• 批准号: 320295168
• 负责人: Professor Dr.-Ing. Alfred Ludwig
• 金额: --
• 依托单位: Max-Planck-Institut für Eisenforschung GmbH (MPIE)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/320295168?language=en
• 关键词: Exploring; Multinary; Nanoparticles; Combinatorial; Sputtering

This project addresses the synthesis and characterization of multinary nanoparticles by combinatorial sputtering into ionic liquids and their atomic scale characterization using advanced transmission electron microscopy techniques. Whereas elemental nanoparticles have been studied a lot, the exploration of multinary nanoparticles is challenging as their synthesis usually requires complex chemistry. In contrast the synthesis of multinary nanoparticles by combinatorial sputtering into ionic liquids enables an efficient exploration of multinary nanoparticles. Unexplored multinary nanoparticles may offer interesting structural and functional properties. Therefore, the existence range of multinary nanoparticles and their properties will be explored for selected systems. The project will start with unary systems (e.g. Au, Pt, Pd, Ru), then binary systems (e.g. Ni-Ti, Ti-Ta, Fe-Pd, Au-Pt, Cu-Ru) and finally ternary systems (Ti-Ni-X). The focus is on systems which can show reversible phase transformations. These will be studied as example systems for functional nanoparticles. The main goal is to understand which materials can be fabricated as sputtered nanoparticles into which ionic liquids. Furthermore, we expect to clarify if thermoelastic martensitic transformations and/or reversible twinning can occur in these nanoparticles. The result in form of relations between the observed nanostructures and the corresponding phase diagrams will be useful for future application of combinatorial sputtering into ionic liquids for further alloy systems. Furthermore fundamental aspects of the nucleation and growth mechanism of multinary nanoparticles as well as phase transformation will be studied using in-situ high resolution transmission electron microscopy.

该项目通过组合溅射到离子液体中来合成和表征多元纳米颗粒，并使用先进的透射电子显微镜技术对其进行原子尺度表征。虽然元素纳米粒子已经被研究了很多，但多元纳米粒子的探索是具有挑战性的，因为它们的合成通常需要复杂的化学过程。相比之下，通过组合溅射到离子液体中来合成多元纳米颗粒使得能够有效地探索多元纳米颗粒。未开发的多元纳米粒子可能提供有趣的结构和功能特性。因此，多元纳米粒子的存在范围和它们的性质将被探索为选定的系统。该项目将从一元系统（例如Au、Pt、Pd、Ru）开始，然后是二元系统（例如Ni-Ti、Ti-Ta、Fe-Pd、Au-Pt、Cu-Ru），最后是三元系统（Ti-Ni-X）。重点是可以显示可逆相变的系统。这些将作为功能性纳米颗粒的示例系统进行研究。主要目标是了解哪些材料可以被溅射成纳米粒子，离子液体。此外，我们希望澄清，如果热弹性马氏体相变和/或可逆的孪生可以发生在这些纳米粒子。观察到的纳米结构和相应的相图之间的关系的形式的结果将是有用的组合溅射到离子液体的进一步合金系统的未来应用。此外，使用原位高分辨率透射电子显微镜将研究多元纳米粒子的成核和生长机制以及相变的基本方面。