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Description and Significance

Melting and Diffusion in a Nano Test Tube Brian A. Korgel, University of Texas at Austin, DMR 0807065. Description and Significance

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Description and Significance

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  1. Melting and Diffusion in a Nano Test TubeBrian A. Korgel, University of Texas at Austin, DMR 0807065 Description and Significance Graduate students Vince Holmberg and Matt Panthani used a transmission electron microscope to form a rigid carbon “nano test tube” around a germanium nanowire with an attached gold nanocrystal. The encapsulated nanowire was heated to 900oC inside the electron microscope, illustrating the effects of a volume-restricting carbon shell on phase transitions and melting dynamics. This experimental platform also enabled the direct observation of nanoscale diffusion processes. Published: Science, 2009, 326, 405. Supported by DMR #0807065

  2. Local Outreach and Materials World NetworkBrian A. Korgel, University of Texas at Austin, DMR 0807065 Graduate students involved in this project were involved in developing a hands-on demonstration involving chemistry and materials science for K-5 students. This demonstration was run at the annual Explore UT event at The University of Texas at Austin. Several local teachers observed the event and invited the students to run demonstrations at their local elementary and middle schools in the Austin area. In this Materials World Network program, graduate students, Justin Harris and Vince Holmberg, also traveled to the University of Alicante to perform low temperature scanning tunneling microscopy measurements in search of magnetic signatures from gold nanocrystals. Graduate students Brian Goodfellow, Michael Rasch, Chet Steinhagen, Matt Panthani and Vahid Akhavan leading hands-on demonstrations of superconductors and magnets at local elementary schools in Austin, TX.

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