Title page for etd-0511114-163117


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URN etd-0511114-163117
Author Fu-ming You
Author's Email Address m023090010@student.nsysu.edu.tw
Statistics This thesis had been viewed 5574 times. Download 3883 times.
Department Electro-Optical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The Study and Fabrication of Surface Properties on the Hydrophobic Microstructures Surface
Date of Defense 2014-06-09
Page Count 70
Keyword
  • Lotus effect
  • hydrophobic
  • PDMS
  • Replica Molding Method
  • contact angle
  • microstructures
  • Abstract Polydimethylsiloxane (PDMS) is a hydrophobic material which has good plasticity, flexibility and a high transmittance and low surface free energy. In this study, we use PDMS with high plasticity to copy the hydrophobic structure of plant leaves by Replica Molding Method. When the PDMS surface has microstructures of hydrophobic plant leaves, the PDMS surface will be more hydrophobic and the production process is simple and convenient.
      The study found that the contact angle of PDMS surface with microstructures of hydrophobic plant leaves by once and twice Replica Molding Method is bigger than the PDMS with flat surface. We discuss the relationship between the surface structure and hydrophobic by hydrophobic model with Cassie-Baxter equation. The contact angle of PDMS surface with microstructures of rice and lotus leaves is similar to the rice and lotus leaves. It is proof that this kind of microstructures is transferred to the surface of the PDMS, and it still has the same hydrophobic properties. In addition, the surface is treated by oxygen plasma, and the PDMS becomes hydrophilic. Then we discuss the relationship between the surface structure and hydrophilic.
    Advisory Committee
  • Mei-Ying Chang - chair
  • Wei Lee - co-chair
  • Li-Yin Chen - co-chair
  • Wen-Jun Zeng - advisor
  • Files
  • etd-0511114-163117.pdf
  • Indicate in-campus at 1 year and off-campus access at 1 year.
    Date of Submission 2014-06-22

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