Graphene:
|
Graphene, a single atom-thick sheet of graphite discovered in recent years, has attracted tremendous attention due to its exotic electronic properties. At low energy, its gapless linear band structure results in transport properties described by the Dirac equation, making it an ideal system for the study of exotic quantum phenomena and other new physics. |
Carbon Nanotubes: |
Coming Soon. |
Suspended Graphene: |
Current graphene fabrication procedures involve wet etching as well as the presence of an imperfect substrate. Such techniques and conditions result in samples with hindered mobility due to the presence of nearby impurities, either in the substrate or as wet processing residue. It has been shown that suspending graphene above the substrate and annealing it can dramatically improve mobility, opening up a new regime to graphene research.
Britt Baugher |
Superconducting Graphene Nanoelectronic Devices: |
Graphene may exhibit many novel transport characteristics in the superconducting regime. New phenomena, such as pseudo-diffusive dynamics of ballistic electrons, the relativistic Josephson effect, and specular Andreev reflection are predicted by theoretical models combining relativistic quantum mechanics and superconductivity.
Michele Zaffalon, Joel I-Jan Wang |
Topological Insulators: |
Coming Soon. |
Carbon Nanotubes and Graphene: |
|
Bi-Layer Graphene: |
Bilayer graphene is also a gapless material. However, by aplying a perpendicular electric field, a band gap can be opened. With this technique we are hoping to create quantum point contacts, quantum dots and other nanostructures in bilayer graphene.
Thiti Taychatanapat |