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PARAMETRIC EXPLORATION OF BRANCHING IN CPS TOWARDS THE APPLICATIONS OF MICRONEEDLES AND MICRO-VELCRO

GOPALAKRISHNAN, APARNA
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1109199063

Abstract Details

2005, MS, University of Cincinnati, Engineering : Electrical Engineering.
This work explores the parametric effects of stress and dimensional constraints under conditions of excess illumination in Coherent Porous Silicon The role of stress and spacing between the pores to cause branching under conditions of excess illumination is experimentally studied to help address the roadblocks faced in the fabrication of microneedles using CPS etching technology. The potential application of a micro-velcro or a microfastener is explored with an attempt to relate this study to understand the mechanisms responsible for the formation of the fish-hook structure during branching that aids this application. The objective of this work is to contribute to the experimental understanding and justification of the mechanisms responsible for causing the branching of pores during CPS etching in n-type silicon and gain valuable insights on possible methods to increase the spacing between individual pores in the array. This will enable fabrication of microneedles using CPS which have more sparse arrays to achieve greater penetration of the skin though the strength of the needles must be taken into account. The strength of the microneedle array is estimated analytically and using ANSYS to determine the variation of strength with length, cross-section and material properties of the needle . The analysis has been performed to determine if the microneedle array fabricated with Low Pressure Chemical Vapor Deposition LPCVD Silicon Nitride withstand greater force before fracture of the needles than the microneedle arrays fabricated with thermal oxide.
Dr. Thurman Henderson (Advisor)
134 p.
MEMS; CPS; BRANCHING; MICRO-VELCRO; MICRONEEDLES; FRACTURE

Recommended Citations

Citations

  • GOPALAKRISHNAN, A. (2005). PARAMETRIC EXPLORATION OF BRANCHING IN CPS TOWARDS THE APPLICATIONS OF MICRONEEDLES AND MICRO-VELCRO [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1109199063

    APA Style (7th edition)

  • GOPALAKRISHNAN, APARNA. PARAMETRIC EXPLORATION OF BRANCHING IN CPS TOWARDS THE APPLICATIONS OF MICRONEEDLES AND MICRO-VELCRO. 2005. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1109199063.

    MLA Style (8th edition)

  • GOPALAKRISHNAN, APARNA. "PARAMETRIC EXPLORATION OF BRANCHING IN CPS TOWARDS THE APPLICATIONS OF MICRONEEDLES AND MICRO-VELCRO." Master's thesis, University of Cincinnati, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1109199063

    Chicago Manual of Style (17th edition)

ucin1109199063
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© 2005, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.