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Optimization and Characterization of a Laser Engraving System for Carbon-Based Electronic Devices

Cai, Tianyi
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1555327711882411

Abstract Details

2019, Master of Science (MS), Ohio University, Electrical Engineering & Computer Science (Engineering and Technology).
Flexible electronics has become a burgeoning research field, and it has shown high potential in the industrial field due to its material and functional flexibility, as well as its low cost and environmentally-friendly features. Predominantly additive printing-based technologies have been utilized to fabricate flexible electronics on various substrates. Direct laser-writing is an alternative approach that can selectively modify the surface of a layer to form lasting chemical or physical changes that can further lower cost and expand fabrication toolsets for high-resolution flexible devices. The first part of this thesis methodically explores a low-cost compact laser scribing or engraving tool that carbonizes the surface of polyimide polymer (Kapton®), paper, and wood layers that turned into conductive upon irradiation. The optimal drive parameters for the blue-violet laser (=445nm) scriber with ~0.5mm beam size are shown to have a linear speed of 1200mm/min, laser power of 60 unit (~0.75W) and line spacing of 16line/mm. In addition, the carbon allotropic composition and lifetime of produced conductive layers were investigated. The second part of this thesis focuses on applications of the laser scribed conductive layers for electrical components. Passive resistors and capacitors, possessing different designing parameters, were fabricated and tested. Moreover, working examples of resistive strain sensors and a three-electrode electrochemical cells are fabricated using the laser engraver, which demonstrate the industrial relevance and extremely attractive features of this method.
Savas Kaya (Committee Chair)
Jadwisienczak Wojciech (Committee Member)
Karanth Avinash (Committee Member)
Tees David (Committee Member)
102 p.
Electrical Engineering; Nanotechnology; Polymers
Flexible Electronics; Electronic Fabrication

Recommended Citations

Citations

  • Cai, T. (2019). Optimization and Characterization of a Laser Engraving System for Carbon-Based Electronic Devices [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1555327711882411

    APA Style (7th edition)

  • Cai, Tianyi. Optimization and Characterization of a Laser Engraving System for Carbon-Based Electronic Devices. 2019. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1555327711882411.

    MLA Style (8th edition)

  • Cai, Tianyi. "Optimization and Characterization of a Laser Engraving System for Carbon-Based Electronic Devices." Master's thesis, Ohio University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1555327711882411

    Chicago Manual of Style (17th edition)

ohiou1555327711882411
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© 2019, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.