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Manufacturing of Three-dimensionally Microstructured Nanocomposites through Microfluidic Infiltration
Published on: March 12, 2014
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A TEMPLATE-BASED FABRICATION TECHNIQUE FOR SPATIALLY-DESIGNED POLYMER MICRO/NANOFIBER COMPOSITES.
Nisarga Naik1, Jeff Caves2, Vivek Kumar
1School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA.
Digest of Technical Papers. International Conference on Solid-State Sensors, Actuators, and Microsystems
|February 18, 2014
Summary
A new template-based micro-transfer molding technique fabricates polymer micro/nanofiber composites with precise control over dimensions and alignment. This method enables complex 3D structures and controlled porosity for advanced material applications.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Nanotechnology
Background:
- Conventional fiber fabrication methods like spinning lack precise control over fiber dimensions and complex geometries.
- Developing advanced techniques for fabricating polymer micro/nanofibers is crucial for applications in tissue engineering, drug delivery, and advanced composites.
Purpose of the Study:
- To report a novel template-based micro-transfer molding technique for polymer micro/nanofiber composite fabrication.
- To demonstrate precise control over fiber dimensions, alignment, and three-dimensional (3D) geometries.
- To showcase the fabrication of complex structures like hollow fibers, porous fibers, and particles encapsulated within fibers.
Main Methods:
- Utilized micro-transfer molding as a parallel processing technique for fiber fabrication.
- Employed a template-based approach to dictate fiber dimensions and spatial arrangement.
- Used collagen as a model polymer to demonstrate the technique's versatility.
Main Results:
- Successfully fabricated polymer micro/nanofibers with widths from 2 µm to 50 µm and thicknesses from 300 nm to 3 µm.
- Achieved precise control over in-plane and out-of-plane fiber geometries, including serpentine and wavy structures.
- Demonstrated the ability to create hollow, solid, porous fibers with controlled periodicity, and fibers with focalized particle encapsulation.
Conclusions:
- The developed template-based micro-transfer molding technique offers superior control over polymer micro/nanofiber fabrication compared to conventional methods.
- This approach facilitates the creation of intricate 3D fiber architectures and functionalized materials.
- The technique holds significant potential for advanced applications requiring tailored micro/nanofiber composites.
