Mechanics-tailored Functional Ceramics via Dislocations
MECERDIS aims to enhance the functionality and toughness of advanced ceramics by using mechanics-guided design and external fields to manipulate dislocations for next-generation applications.
Projectdetails
Introduction
Advanced functional ceramics play an indispensable role in our modern society and they are typically engineered by point defects or interfaces. The potential of dislocations (one-dimensional atomic distortions) in functional ceramics has been greatly underestimated until most recently.
Dislocation-Tuned Functionality
Exciting proofs-of-concept have been demonstrated for dislocation-tuned functionality such as electrical conductivity, superconductivity, and ferroelectric properties, revealing a new horizon of dislocation technology in ceramics for a wide range of next-generation applications from sensors, actuators to energy converters.
Challenges in Ceramics
However, it is widely known that ceramics are hard (difficult to deform) and brittle (easy to fracture), making it a great challenge to tailor dislocations in ceramics. This pressing bottleneck hinders the dislocation-tuned functionality and the true realization of dislocation technology.
MECERDIS Approach
To break through this bottleneck, MECERDIS employs mechanics-guided design coupled with external fields (thermal, light illumination, electric field) to manipulate the three most fundamental factors of dislocation mechanics:
- Nucleation
- Multiplication
- Motion
These external fields greatly impact the charged dislocation cores in ceramics and open new routes for mechanical tuning.
Goals of MECERDIS
With these novel approaches, MECERDIS aims to generate, control, and stabilize dislocations in large plastic volumes up to mm-size with high density up to 10^15/m^2 to allow large-scale preparation for functionality assessment.
Benefits of Dislocations
Another essential benefit is that dislocations are an effective tool to combat the brittleness of ceramics by improving the damage tolerance and fracture toughness.
Future Implications
MECERDIS will not only fulfill the key prerequisite of dislocation-tuned functionality but also secure the mechanical integrity and operational stability of future dislocation-based devices. With its success, MECERDIS will define a new paradigm of engineering functional ceramics using mechanics and dislocations.
Financiële details & Tijdlijn
Financiële details
Subsidiebedrag | € 1.499.250 |
Totale projectbegroting | € 1.499.250 |
Tijdlijn
Startdatum | 1-4-2023 |
Einddatum | 31-3-2028 |
Subsidiejaar | 2023 |
Partners & Locaties
Projectpartners
- KARLSRUHER INSTITUT FUER TECHNOLOGIEpenvoerder
- TECHNISCHE UNIVERSITAT DARMSTADT
Land(en)
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