Fundamental Degradation Mechanisms of Multi-Functional Nanoengineered Surfaces
Abstract
This project studied multifunctional nanoengineered surfaces to manipulate fluidic and heat transport processes for robust and long-lasting high performance thermal management solutions. More recently, multifunctional nanoengineered surfaces have been developed that can significantly enhance the stability and performance of these systems using thin film evaporation and jumping-droplet condensation. Although proven in lab scale environments, the wide spread utilization of these surfaces has not been successful due to their poor durability. To successfully implement these phase-change based approaches, the first critical step is obtaining the fundamental understanding of the complex degradation mechanisms on such surfaces. This project utilised quantitative experiments and modeling to obtain fundamental insight into the degradation mechanisms underpinning the failure of functional nanoengineered coatings concurrent with vapor-to-liquid phase change. Specifically, the preliminary we identified that functional coating degradation during vapor-to-liquid-phase change governs nucleation behavior and must be well understood in order to enhance long-term durability. This project further investigated and systematically studied these phase change mediated dynamics on state-of-the-art functional surfaces, and ultimately extended the understanding and prediction capability to more complex surfaces and other functional coating material systems. The outcomes of the project not only make important contributions to basic science, but also provide a necessary first step to advance the area of high-performance thermal management and enable new capabilities for defense and commercial systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 08, 2018
- Accession Number
- AD1050301
Entities
People
- Nenad Miljkovic
Organizations
- University of Illinois Urbana–Champaign