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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:#3333FF'>Growth of Graphene by <br>Carbon Source Molecular Beam Epitaxy<br></span></b><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:blue'><br></span></b><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:black'>Dr. William C. Mitchel<br>AFRL, Wright Patterson AFB, OH<br><br></span></b><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:#3333FF'>10:30 a.m., Tue. July 12, 2011<br>Room 312, Building D3<br>Cullen College of Engineering<br>University of Houston<o:p></o:p></span></b></p><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:12.0pt;font-family:"Arial","sans-serif";color:#3333FF'><o:p> </o:p></span></b></p><p class=MsoNormal><span style='font-size:12.0pt'>Graphene, a single to a few atomic layers of graphite, has only recently been isolated. However, its unique electronic properties have already led to the demonstration of quantum effects such as Dirac electrons, Klein tunneling and fractional quantum Hall effect. It is also being pursued for advanced electronics and as a possible substitute for Si to maintain Moore’s Law. <br><br>In this talk, I will review existing methods for producing graphene and then discuss our research at the Air Force Research Laboratory on growth by direct deposition of carbon from solid sources. We use both thermally evaporated C<sub>60</sub> and a heated graphite filament to generate carbon. Both result in graphene but with significant differences. Preliminary results on the formation of bandgaps in bilayer graphene doping heterostructures fabricated by using different carbon sources will be presented.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt'>Please contact Steven Pei, <a href="mailto:spei@uh.edu">spei@uh.edu</a>, if you need more information<b> </b><o:p></o:p></span></p></div></body></html>