Project description

This research project aims to explore approaches for surface functionalization of hierarchical nanoporous (h-np) gold by stimulus-sensitive organic layers in order to develop novel material concepts for multifunctional hard-soft hybrids as sensor and actuator materials. Targeted control of the elastic as well as plastic behavior of these materials by electrical signals and chemical stimuli is pursued using experimental and computational methods.

Two types of organic coatings are employed: the conductive polymer polypyrrole (PPy) and self-assembling monolayers (SAM) of organic thiols. The component selection of the resulting functional material systems was motivated both by the variety of potential new functionalities they can impart to nanoporous (np) metals and by a significant potential to improve mechanical properties, based on our preliminary work. This is expected to lead to strategies for the development of multifunctional material systems with tailored properties, where a function is accompanied by targeted improved mechanical behavior.

 

Project leader
Prof. Dr.-Ing. Robert Mei├čner,
TUHH
Contact
Dr-.Ing. Nadiia Mameka,
Hereon
Contact

Dr. Gregor Vonbun-Feldbauer,
TUHH
Contact

 Keywords

nanoporous

metal

mechanics

network

microstructure

machine learning

Publications

1. M. Graf et al.: Direct and Broadband Plasmonic Charge Transfer to Enhance Water Oxidation on a Gold Electrode. ACS Nano 15, 3188-3200, DOI: 10.1021/acsnano.0c09776 (2021).