International Colloquia #24: Opportunities in Nanoengineered Surface Designs
Updated: November 19, 2024
Summary
This video explores the innovations in nanoengineered surface designs for various applications such as thermal management and carbon dioxide capture. The discussion delves into wettability control through surface chemistry and geometry, with a focus on enhancing nucleate boiling performance. The importance of shifting towards renewable energy sources to combat carbon dioxide emissions is emphasized, along with the challenges and opportunities in implementing nano-engineering advancements in industries like electronics cooling and building energy efficiency.
TABLE OF CONTENTS
Introduction and Speaker Panel
Dr. Dimos Poulikakos
Dr. Doris Vollmer
Dr. Yas Takata
Dr. Nenad Miljkovic
Nanoengineered Surface Designs for Phase Change Heat
Controlling Wettability
Freezing and Frosting Phenomena
Ice Prevention and Shedding
Carbon Dioxide Capture
Development of Super Liquid-Repelling Membranes
Challenges in Releasing Carbon Dioxide
Storage Issues and Solutions
Transition to Renewable Energy
Research on Mixed-Wettability Surface for Nucleate Boiling
Effects of Surface Superheat on Nucleate Boiling
Enhancing Boiling Curve with Wettability Control
Improving Nucleate Boiling Performance
Application of Halloysite Nanotube Coating
Enhancing Nucleate Boiling with Aluminum Surface
Nano-Engineering Surfaces for Various Applications
Challenges and Opportunities in Nano-Engineering
Challenges in Developing Steam Condenser Surfaces
Cost Concerns in Implementing Coating Technology
Introduction and Speaker Panel
Introducing the session moderator and panel of distinguished speakers focusing on nanoengineered surface designs.
Dr. Dimos Poulikakos
Dr. Poulikakos' background and interests in interfacial phenomena and energy-related applications.
Dr. Doris Vollmer
Dr. Vollmer's expertise in slippery lubricant impregnated surfaces and CO2 capture and storage applications.
Dr. Yas Takata
Dr. Takata's research focus on heat transfer, boiling, and condensation using interfacial and variability-based techniques.
Dr. Nenad Miljkovic
Dr. Miljkovic's work in condensation and phase heat transfer using wettability and interfacial science.
Nanoengineered Surface Designs for Phase Change Heat
Exploring the applications of micro and nanoscale engineering in radiation, evaporation, condensation, and boiling surfaces for thermal and heat transfer applications.
Controlling Wettability
Understanding wettability control through surface chemistry and geometry, focusing on contact angles and surface design.
Freezing and Frosting Phenomena
Discussing the physics of freezing, ice nucleation, and utilizing the physics to engineer surfaces for passive mitigation of freezing and frosting.
Ice Prevention and Shedding
Exploring methods to prevent ice formation and shedding in the aerospace industry using surface design and phase change phenomena.
Carbon Dioxide Capture
Addressing the challenge of carbon dioxide concentration in the atmosphere and presenting superamphiphobic membranes for enhanced carbon dioxide capture.
Development of Super Liquid-Repelling Membranes
Membranes with super liquid-repelling properties were developed, leading to significant performance increases.
Challenges in Releasing Carbon Dioxide
Releasing carbon dioxide from the amine solution requires heating to high temperatures, leading to reduced efficiency in coal power plants.
Storage Issues and Solutions
Storage of carbon dioxide in deep geological formations, exhausted gas/oil fields, saline formations, or stable carbonates is discussed with a focus on the need for experience and safety considerations.
Transition to Renewable Energy
Emphasizing the need to shift towards renewable energy sources and adjust personal habits to combat carbon dioxide release issues.
Research on Mixed-Wettability Surface for Nucleate Boiling
Discussion on the onset of nucleate boiling and its applications in water and ethanol boiling, supported by collaborations and funding from NEDO Feasibility Study Program.
Effects of Surface Superheat on Nucleate Boiling
Explanation on nucleate boiling concept, temperature differences, and the impact of dissolved air and wettability control on boiling performance.
Enhancing Boiling Curve with Wettability Control
Analyzing the effect of wettability on boiling curve, highlighting the advantages and disadvantages of hydrophobic and hydrophilic surfaces.
Improving Nucleate Boiling Performance
Exploring nucleate boiling performance at different pressures and surfaces, especially focusing on enhancing onset of nucleate boiling.
Application of Halloysite Nanotube Coating
Testing the Halloysite Nanotube coating on copper surfaces for boiling, revealing significant improvements in nucleate boiling temperature.
Enhancing Nucleate Boiling with Aluminum Surface
Discussing the use of anodized aluminum surface and Halloysite Nanotube coating to enhance nucleate boiling performance and reduce surface superheating.
Nano-Engineering Surfaces for Various Applications
Exploring the diverse applications of nano-engineered surfaces in thermal management, electronics cooling, petrochemical separations, and building energy efficiency.
Challenges and Opportunities in Nano-Engineering
Highlighting the challenges and opportunities in nano-engineering, including durability, fluid compatibility, design tools, and manufacturability, with a focus on research advancements and future directions.
Challenges in Developing Steam Condenser Surfaces
The conservative nature of the steam condenser industry poses a challenge for implementing new technologies due to reliability concerns. Cost is another barrier, especially in industries focused on mass production at minimal costs.
Cost Concerns in Implementing Coating Technology
Implementing coating technology not only requires adding value to customers but also simplifying manufacturing processes and embracing enhanced manufacturing techniques like nanomanufacturing and nano-engineering genetic technologies to reduce costs.
FAQ
Q: What are some areas of expertise highlighted in the file related to nanoengineered surface designs?
A: Expertise includes interfacial phenomena, slippery lubricant impregnated surfaces, CO2 capture, heat transfer, boiling, condensation, wettability, interfacial science, radiation, evaporation, and heat transfer applications.
Q: What are the physics-based discussions included in the file regarding surface engineering?
A: Discussions encompass freezing, ice nucleation, preventing ice formation, carbon dioxide concentration and capture, boiling performance, wettability control on boiling, and nucleate boiling concepts.
Q: What are some key learnings related to carbon dioxide capture and storage presented in the file?
A: Key points include the development of superamphiphobic membranes for enhanced carbon dioxide capture, the need for experience and safety in carbon dioxide storage, and the emphasis on shifting towards renewable energy sources.
Q: How are nano-engineered surfaces applied in thermal management and other industries?
A: Nano-engineered surfaces find application in thermal management, electronics cooling, petrochemical separations, building energy efficiency, and improving nucleate boiling performance.
Q: What are some challenges and opportunities discussed in nano-engineering within the file?
A: Challenges and opportunities include durability, fluid compatibility, design tools, manufacturability, reliability concerns in steam condenser industry, cost barriers, and the need for enhanced manufacturing techniques.
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