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We study the physics governing nanoscale systems, in particular nanowires, nanotubes and two-dimensional (2D) materials like graphene and transition-metal dichalcogenides. Most of our nano-objects are grown in our lab, and they are then built into various kinds of devices using micro- or nano-fabrication techniques. We are particularly interested in low-dimensional physics, many-body effects, phase transitions, and electronic excitations. Though driven by curiosity, we also hope our work will be relevant to applications, perhaps in sensing or in storage and transfer of charge, energy and information. 


​Nanosca​le behavior of strongly correlated materials​
Phase transitions of adatoms on nanotubes & graphene



2D semiconductors​​
2D topological insulators & superconductors​