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Copper NanoWire Growth and Analysis for Graphene Construction

Copper NanoWire Growth and Analysis for Graphene Construction. Thaddeus J. Krawczyk, Jr. Computer Engineer ’14. Agenda. Reasons for studying copper nanowire growth Growth and deposition techniques Methods of analysis and results Potential usage in graphene construction. Background.

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Copper NanoWire Growth and Analysis for Graphene Construction

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  1. Copper NanoWire Growth and Analysis for Graphene Construction • Thaddeus J. Krawczyk, Jr. • Computer Engineer ’14

  2. Agenda • Reasons for studying copper nanowire growth • Growth and deposition techniques • Methods of analysis and results • Potential usage in graphene construction

  3. Background • Graphene is a single layer of hexagonal carbon atoms. • It can be made to have semiconducting properties that make it a potential replacer of silicon in electronics. • Primarily “grown” on metal plates Image Courtesy hplusmagazine.com

  4. Growing Copper NanoWires • Grown by oxidizing copper in a furnace • When copper oxidizes it “grows” • Primarily grows on edges of surface

  5. Microscopy • Primary tools for analysis were the Philips XL30 ESEM-FEG and the Philips CM200 TEM • Scanning and Transmission Electron Microscopy Image Courtesy of ITG Beckman

  6. Growth Results Copper Wool Copper Grids

  7. Deposition on Another Surface • Deposition to another substrate was needed for further processing • SiO2 was chosen as the substrate • Various methods used • ESEM confirms success of all methods, varied effectiveness

  8. Oxidation • Was the copper fully oxidized? • TEM analysis shows that it might have copper core • Acetic acid bath was necessary to confirm

  9. Acetic Acid Etching • Sample was placed in acetic acid bath • After removal, was dried and then analyzed using an ESEM

  10. Next Steps • Graphene growth is being performed on the wires using a clean room environment • Analysis of the copper to determine graphene growth • Make electronics that utilize the graphene

  11. Acknowledgements • Joshua D. Wood • Professor Joseph W. Lyding • STM Group • ITG staff and facilities

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