Broadly, the materials science of Zero-, One- and two-dimensional nano structures, which presently includes:

Investigation of 2-D materials (Scanning Tunneling Microscopy, Physical & Electrochemical properties)

Electrokinetics of surfaces

Topological Insulators for Sound and light confinement

Electrochemical Energy Storage: Supercapacitors from low-dimensional materials

Nonlinearity in Novel Nanostructures – Nanotubes, Nanocoils, Nanohelices, etc.
Carbon nanostructures

Thermal Metamaterials
Thermal Metamaterials

Photoemission from quantum dot films & related physics