★ Hole-blocking multijunction photovoltaic cells: Oxides, CdTe, and Sb₂Se₃-based

★ Micro/nanoscience with textured-semiconductors: Si, Ge, InP, and GaAs

★ Nanomanipulation of electronic transport: Field-induced doping

★ Resistive switching-based memory devices: TiO₂, HfO₂, and Cu:ZnO

★ Neuromorphic computing using resistive memory devices: TiO₂, HfO₂, and Cu:ZnO

★ Nanoscale functionalization of patterned substrates

★ Cold cathode electron emission: Surface probe microscopy-based studies