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.

本项目通过组合溅射到离子液体中来合成和表征多纳米颗粒，并使用先进的透射电子显微镜技术进行原子尺度表征。虽然单质纳米粒子已经被研究了很多，但多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反应。相比之下，通过组合溅射到离子液体中合成多纳米粒子可以有效地探索多纳米粒子。未开发的多纳米粒子可能提供有趣的结构和功能特性。因此，我们将对所选体系的多纳米粒子的存在范围及其性质进行探索。该项目将从一元体系（如Au、Pt、Pd、Ru）开始，然后是二元体系（如Ni-Ti、Ti-Ta、Fe-Pd、Au-Pt、Cu-Ru），最后是三元体系（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粒子的例子系统进行研究。主要目标是了解哪些材料可以制成溅射纳米颗粒，进入哪些离子液体。此外，我们希望澄清这些纳米颗粒是否会发生热弹性马氏体转变和/或可逆孪晶。所观察到的纳米结构和相应相图之间的关系的结果将为离子液体组合溅射在进一步合金体系中的应用提供有用的信息。此外，多纳米粒子的成核和生长机制以及相变的基本方面将研究使用原位高分辨率透射电子显微镜。