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Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
Published on: January 8, 2014
Shape-tunable polymer nanofibrillar structures by oblique electron beam irradiation
Tae-il Kim1, Changhyun Pang, Kahp Y Suh
1BK 21 School of Creative Engineering Design of Next Generation Mechanical and Aerospace Systems, Seoul National University, Seoul, Korea.
Langmuir : the ACS Journal of Surfaces and Colloids
|July 4, 2009
Summary
We developed a simple method to create tunable polymer nanohairs using molding and electron beam irradiation. These structures have potential applications in biomimetic adhesives and actuators.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Fabricating high-aspect-ratio polymer nanostructures with controlled geometry is challenging.
- Existing methods often involve complex multistep processes.
Purpose of the Study:
- To introduce a facile method for fabricating geometry-controllable polymer nanofibrillar structures.
- To demonstrate the tunability of nanohair geometry through electron beam irradiation parameters.
Main Methods:
- Utilizing molding and oblique electron beam irradiation.
- Precisely controlling electron beam tilting angle, acceleration voltage, and exposure time.
- Fabricating stooped or crispated nanohair structures with aspect ratios around 10.
Main Results:
- Achieved geometry-controllable, high-aspect-ratio polymer nanofibrillar structures.
- Demonstrated precise tunability of nanohair geometry by adjusting irradiation parameters.
- Developed a versatile, single-step fabrication route for nanofibrillar structures.
Conclusions:
- The developed method offers a simple and versatile approach to creating tunable polymer nanohairs.
- These nanofibrillar structures show promise for applications in actuators and biomimetic attachment (e.g., gecko-like adhesives, nano-Velcro).
