Nanotechnology for Bio-mimetic Dry Adhesives
Date Issued
2006
Date
2006
Author(s)
Tsai, Yao-Chuan
DOI
zh-TW
Abstract
This work presents the fabrication and characterization of nano-fibrils mimicking gecko foot-hairs for enhanced dry adhesion. High contact area ratio of the polymer and carbon nanotube fibrils is achieved, respectively, using e-beam lithography and chemical vapor deposition. The adhesion forces from gecko foot-hairs and the artificial fibrils are measured with a customized AFM tip to evaluate the effects of different materials, surface density, the number of fibrils and the area of real contact. With the water-vapor assisted deposition, the surface density of the carbon nanotubes is optimized for comparable adhesion forces to gecko foot-hairs. Although the photoresist and the CNT are both intrinsically hydrophilic, superhydrophobic behavior was obtained when they were patterned or synthesized into nano-fibrils.
Subjects
壁虎
仿生
奈米
吸附
黏著
自我潔淨
gecko
biomimetic
nanotechnology
adhesives
self-cleaning
Type
thesis
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