Title page for etd-0723117-124437


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URN etd-0723117-124437
Author Shih-Jie Fang
Author's Email Address No Public.
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Department Mechanical and Electro-Mechanical Engineering
Year 2016
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Flexible Tactile Sensor Array Utilizing Micro-structured PDMS Bumps with PEDOT:PSS Conductive Polymer
Date of Defense 2017-07-26
Page Count 88
Keyword
  • electronic skin
  • tactile sensor array
  • flexible sensor
  • contact resistance
  • conductive polymer
  • Abstract This work presents a novel flexible tactile sensor array fabricated with PEDOT:PSS conductive polymer modified micro-structured polydimethylsiloxane (PDMS) bumps. PDMS bump arrays with micro-structures are coated with PEDOT:PSS conductive polymer for resistive tactile sensing. The micro-structures on PDMS bumps are produced by replicating the formed thermal bubble cavities during laser ablation of polymethyl methacrylate (PMMA) substrate. The micro-structures on the PDMS bumps greatly enhance the small force response such that the developed sensor exhibits a good response for detecting forces ranging from 0.2 ~ 0.7 N. Results also indicate that the developed PDMS-based tactile sensor has good elastic property with the spring constant of 8.3 N/mm with excellent reproducibility. Additionally, in the practical application of the tactile sensing, the sensor array will be combined with array scanning system, and applied the static pressure, dynamic sliding trajectory on the sensor array to measure the tactile image. Results show that the tactile sensing system is able to identify the static pressure of 0.6, 1.0 N, and the pressure distribution. Moreover, the sliding trajectory can be found in the sensing array with the changes of contact condition. Only the sensing unit affected by the contact object will produce an output voltage of 1 V or more, and the remaining unit will have no significant voltage output. The developed sensor will be able to recognize the tactile image of the dynamic contact behavior. In this study, the developed method provides a simple yet high performance way to produce flexible tactile sensor for electronic skin applications.
    Advisory Committee
  • Cheng-Hsin Chuang - chair
  • Lung-Ming Fu - co-chair
  • Chia-Yen Lee - co-chair
  • Cheng-Tang Pan - co-chair
  • Che-Hsin Lin - advisor
  • Files
  • etd-0723117-124437.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2017-08-23

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