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Nise 2008 Presentation


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Presentation from my 2008 Summer Research Experience:

Published in: Business, Technology
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Nise 2008 Presentation

  1. 1. Materials for Natural Energy Capture: Thermoelectricity on TiO 2 Surfaces By Jessica Wukitsch and Raleigh Booze
  2. 2. Goals <ul><li>To immerse ourselves in engineering approaches to education </li></ul><ul><li>To seek alternative forms of energy, not only in theory, but in application </li></ul><ul><li>To build relationships with fellow educators and researchers </li></ul><ul><li>To enhance our curriculum through hands-on learning experiences applicable to our classroom </li></ul>
  3. 3. Our Project <ul><li>Creating a nano-particle thin film to be used to conduct electricity and it’s application in the development of solar cells </li></ul><ul><ul><li>TiO2 </li></ul></ul><ul><ul><ul><li>TiO2 is abundant and relatively inexpensive </li></ul></ul></ul><ul><ul><ul><li>TiO2 is acts as a conductor in nanoparticle form </li></ul></ul></ul><ul><ul><ul><li>Can be used as a thinfilm for solar cells </li></ul></ul></ul><ul><ul><li>Nanoparticles </li></ul></ul><ul><ul><ul><li>Very small particles on the order of 1-100 nm </li></ul></ul></ul><ul><ul><ul><li>large surface area to volume ratio </li></ul></ul></ul><ul><ul><ul><li>Can be doped with other materials in order to increase the efficiency of solar energy collection </li></ul></ul></ul>
  4. 4. Our Technique <ul><li>Sputtering </li></ul><ul><ul><li>Heating Argon gas to 600˚C in order to create a plasma </li></ul></ul><ul><ul><li>Firing high energy ions from a plasma onto a substrate </li></ul></ul><ul><ul><li>Ions are fired at shutter for half an hour (presputtering) </li></ul></ul><ul><ul><li>Shutter is removed and nanoparticles are deposited as a thin film onto substrate over the period of 2 hours </li></ul></ul><ul><ul><li>Sample is removed and ready for analysis </li></ul></ul>
  5. 5. Data Analysis <ul><li>X-ray Photon Spectroscopy (XPS) </li></ul><ul><ul><li>Uses a combination of X-Ray technology and computers to measure the elemental composition, empirical formula and chemical state of the elements that exist within a material </li></ul></ul><ul><li>X-ray Diffraction (XRD) </li></ul><ul><ul><li>An X-ray is used to measure intensity versus the angle of diffraction of a sample </li></ul></ul><ul><ul><li>A program is then used to analyze the peaks of the graph from the data to determine which elements are present in a sample and the intensity in which they are found </li></ul></ul><ul><li>Testing Conductivity </li></ul><ul><ul><li>The conductivity of a sample is measured by the amount of current that is run through the sample versus the resistance </li></ul></ul>
  6. 6. Curriculum Enhancement <ul><li>Lesson Plan Ideas </li></ul><ul><ul><li>Sol Gel synthesis as a lab </li></ul></ul><ul><ul><li>Solar generated hydrogen powered cars demonstration </li></ul></ul><ul><li>Integrating engineering math and science in the classroom </li></ul><ul><ul><li>Have students create their own solar powered machine (propose to students as energy problem, give them required materials and allow them to construct their own plan) </li></ul></ul><ul><li>Future Prospects </li></ul><ul><ul><li>Field trips to an engineering lab, or solar energy plant </li></ul></ul><ul><ul><li>Classroom visits by professors to show vacuum demonstrations </li></ul></ul><ul><ul><li>Limit the amount of paper usage in the classroom through technology tools (Google groups, Jing, Blogs, Diigo, etc.) </li></ul></ul>