Functional nanoparticle arrays produced by dewetting of thin metallic films

通过金属薄膜去湿产生的功能性纳米颗粒阵列

• 批准号: 241966571
• 负责人: Professor Dr. Peter Schaaf
• 金额: --
• 依托单位: Fachgebiet Werkstoffe der Elektrotechnik (WET)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/241966571?language=en
• 关键词: Functional; nanoparticle; arrays; produced; dewetting

The exact geometric arrangement of monodisperse nanoparticles over large areas has an enormous potential for applications in technical areas like in energy technology, metamaterials, plasmonics, sensorics, DNA detection, and catalysis for ordered nanowire and nanotube growth. Dewetting of thin films as a self-organized simple process is very interesting for the preparation of ordered nanoparticle arrays on a large scale. Deficiencies in the understanding of the dewetting process especially for thin multilayers will be solved in this project. A major point is the detailed nanostructuring of the substrates, allowing the separation and the design of the processes. Strategies will be worked out leading to the ability of a perfect two-dimensional ordering of monodisperse nanoparticle arrays. With that the interactions in the 2D nanoparticle arrays will be studied and it will be investigated how functionalities can be achieved reaching far beyond that of single nanoparticles. In addition, as a new approach, also the dewetting of bi- and multilayer films is investigated. Completely new effects and deviations from thermodynamic equilibrium are expected. The formation of nanoalloys and the nanoseparation effects after dewetting of bi-layers is investigated. Their properties and their potential for new applications are investigated.

单分散纳米颗粒在大面积上的精确几何排列在技术领域具有巨大的应用潜力，如能源技术，超材料，等离子体，传感器，DNA检测和催化有序纳米线和纳米管生长。薄膜去湿作为一种简单的自组织过程，在大规模制备有序纳米粒子阵列方面具有重要意义。这个项目将解决在去湿过程的理解，特别是薄多层膜的缺陷。主要的一点是基板的详细纳米结构化，允许分离和工艺设计。策略将制定出一个完美的单分散纳米粒子阵列的二维有序的能力。由此，将研究2D纳米颗粒阵列中的相互作用，并研究如何实现远远超出单个纳米颗粒的功能。此外，作为一种新的方法，还研究了双层和多层膜的去湿。完全新的影响和偏离热力学平衡的预期。研究了双层膜去湿后纳米合金的形成和纳米分离效果。它们的性能和新的应用潜力进行了研究。

项目成果

Fabrication of hollow gold nanoparticles by dewetting, dealloying and coarsening

• DOI: 10.1016/j.actamat.2015.09.024
• 发表时间: 2016
• 期刊: Acta Materialia
• 影响因子: 9.4
• 作者: A. Kosinova;Dong Wang;P. Schaaf;O. Kovalenko;L. Klinger;E. Rabkin

Solid-state dewetting of Au/Ni bilayers: The effect of alloying on morphology evolution

• DOI: 10.1063/1.4891448
• 发表时间: 2014-07-28
• 期刊: JOURNAL OF APPLIED PHYSICS
• 影响因子: 3.2
• 作者: Herz, A.;Wang, D.;Schaaf, P.
• 通讯作者: Schaaf, P.

Facet-controlled phase separation in supersaturated Au-Ni nanoparticles upon shape equilibration

• DOI: 10.1063/1.4928627
• 发表时间: 2015-08-17
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Herz, A.;Friak, M.;Schaaf, P.
• 通讯作者: Schaaf, P.

Solid-state dewetting of single- and bilayer Au-W thin films: Unraveling the role of individual layer thickness, stacking sequence and oxidation on morphology evolution

• DOI: 10.1063/1.4944348
• 发表时间: 2016-03-01
• 期刊: AIP ADVANCES
• 影响因子: 1.6
• 作者: Herz, A.;Franz, A.;Schaaf, P.
• 通讯作者: Schaaf, P.