Characterization of Carbon
Download
1 / 13

Holly Tourtillott University of Missouri - PowerPoint PPT Presentation


  • 88 Views
  • Uploaded on

Characterization of Carbon Nanofibers /Cavities and Microelectrode Fabrication for Biosensors Application. Holly Tourtillott University of Missouri. Faculty Advisor: Dr. Uche Wejinya Graduate Student Advisor: Zhuxin Dong Department of Mechanical Engineering, University of Arkansas

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Holly Tourtillott University of Missouri' - abril


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Characterization of Carbon Nanofibers/Cavities and Microelectrode Fabrication for Biosensors Application

Holly Tourtillott

University of Missouri

  • Faculty Advisor: Dr. Uche Wejinya

    Graduate Student Advisor: Zhuxin Dong

    Department of Mechanical Engineering, University of Arkansas

    July 20, 2009

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Outline
Outline

  • Carbon Nanotubes

  • Microelectrode Fabrication

  • Characterization of Carbon Nanofibers on Electrodes

  • Experiment and Results

  • Conclusion and Future Work

  • References

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Carbon nanotubes
Carbon Nanotubes

  • Carbon nanotubes have remarkable electrical, mechanical and thermal properties.

  • This research focuses on carbon nanotubes band structure to ultimately identify their electrical properties.

  • Using the Atomic Force Microscope and dielectrophoresis, the band structure and therefore conductivity of the CNTs can be determined.

  • The DEP process is used to align and determine the characteristics of the nanofibers.

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Microelectrode fabrication
Microelectrode Fabrication

  • The DEP process requires the fabrication of a microelectrode chip.

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Microelectrode fabrication1
Microelectrode Fabrication

  • The DEP process requires the fabrication of a microelectrode chip.

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Characterization of carbon nanofibers on microelectrodes
Characterization of Carbon Nanofibers on Microelectrodes

  • Using an Agilent 5500-ILM Atomic Force Microscope (AFM), scanning of a microelectrode chip may be conducted.

  • The AFM is a very high-resolution type of scanning probe microscope that has resolution of fractions of a nanometer. We can use this microscope to measure the z-direction of a nanoparticle and in our case the height of the microelectrode chip fibers.

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Characterization of carbon nanofibers on microelectrodes1
Characterization of Carbon Nanofibers on Microelectrodes

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Characterization of carbon nanofibers on microelectrodes2
Characterization of Carbon Nanofibers on Microelectrodes

C1

C2

C3

C4

C5

C6

C7

C8

C9

C1

C9

A3

A5

A7

A2

A4

A8

A1

A6

A9

200 μm square

A1 = Array 1

C1 = Contact Pad 1

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Characterization of carbon nanofibers on microelectrodes3
Characterization of Carbon Nanofibers on Microelectrodes

Cavity

Fiber

9 arrays under camera view to scan

A 9×9µm area scanned in one array, cavities and fibers are found.

3D topography image

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Experiment and results
Experiment and Results

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Conclusion and future work
Conclusion and Future Work

  • Throughout this research, the fabrication of a microelectrode chip was completed as well as the scanning of two NASA microelectrode chips.

  • Future work includes the use of the completed microelectrode chip that was fabricated in this research. This chip was made specifically for the DEP process of aligning carbon nanotubes and ultimately further research in assisting the biosensor applications technology.

Micro and Nano Systems Engineering Laboratory, University of Arkansas


References
References

  • -Microscope: Agilent 5500 ILM, Atomic Force Microscope

  • -Website: http://en.wikipedia.org/wiki/Carbon_nanotubes

  • -Book: Carbon Nanotube- Multifunctional Material, Edited by Prakash R. Somani and M. Umeno, Applied Science Innovations

  • -Website: http://ieeeexplore.org/nanotubes

  • Publication: Zhuxin Dong, Uchechukwu C. Wejinya, Haibo Yu, and Imad H. Elhajj. “Design, Fabrication and Testing of CNT Based ISFET for NANO pH Sensor Application: A Preliminary Study.”

  • Publication: KunalGhosh. “Electronic Band Structure of Carbon Nanotubes.”

Micro and Nano Systems Engineering Laboratory, University of Arkansas


Thank You!

Any Questions?

Micro and Nano Systems Engineering Laboratory, University of Arkansas


ad