4D-Printed Elastomeric Ceramic Structures via Buckling
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Solution Overview
Problem
Existing ceramic precursors used in additive manufacturing are not flexible or sufficiently stretchable to enable self-shaping assembly before polymer-to-ceramic transformation, limiting the creation of complex ceramic structures.
Innovation Solution
A method involving the extrusion of inks with particles and polymeric ceramic precursors to form elastic structures, subjecting them to tensile stress, and converting them into 4D-printed ceramic objects through heat treatment, allowing for the creation of complex shapes via buckling patterns like the Miura-ori pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing ceramic precursors are used in additive manufacturing, then manufacturing capability is achieved, but flexibility and stretchability are insufficient to enable self-shaping assembly
Solution Approach 1:
The patent changes the material parameter from rigid ceramic precursor to elastomeric ceramic precursor, enabling flexibility and stretchability while maintaining ceramic functionality. This parameter change allows the material to undergo large deformations and self-shaping assembly before final ceramic transformation.
Solution Approach 2:
The patent uses composite materials combining elastomeric properties with ceramic precursor characteristics. The elastomeric ceramic precursor integrates the flexibility of elastomers with the ceramic-forming capability, enabling both ease of manipulation and final ceramic performance.
2Shape
If traditional ceramic structures are manufactured, then structural integrity is achieved, but complex shapes and scalability are limited
Solution Approach 1:
The patent applies preliminary action by stretching the elastomeric ceramic precursor before final ceramic transformation. The precursor is deformed into the desired complex shape while in the flexible elastomeric state, then locked in place upon ceramic transformation, avoiding the need for complex manufacturing processes.
Solution Approach 2:
The patent utilizes phase transition from elastomeric state to ceramic state to achieve shape fixation. The material transitions from a flexible, deformable phase to a rigid, stable phase, enabling complex shapes to be formed and maintained without complex manufacturing equipment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the fabrication of programmable, customizable ceramic objects with high mechanical robustness and scalability, overcoming the strength-scalability trade-off in traditional ceramics, and providing cost-effective, high-resolution shape-morphing capabilities.
Implementation Method 1
Polymer-Derived Ceramics (PDCs) are a type of ceramic, which are prepared through thermolysis and chemical treatment of polymeric ceramic precursors
Implementation Method 2
releasing the application of the tensile stress from the first elastic structure to allow the first elastic structure and second elastic structure to form a 4D-printed elastomeric object
Data Source
AI summary
Systems and method of constructing a 4D-printed ceramic object, the method including extruding inks including particles and polymeric ceramic precursors through a nozzle to deposit the inks to form a first elastic structure and a second elastic structure, subjecting the first elastic structure to a tensile stress along at least one axis, attaching the second elastic structure to the first elastic structure, releasing the application of the tensile stress from the first elastic structure to allow the first elastic structure and second elastic structure to form a 4D-printed elastomeric object, and converting the 4D-printed elastomeric object into the 4D-printed ceramic object.