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Our main research area focused on quantum transport properties of mesoscopic structures in reduced dimensions like two-dimensional graphene, two-dimensional transition metal dichalcogenides, topological insulator and one-dimensional nanowires. We extensively study their properties in heterostructures geometry, which gives us unique opportunity to pursue the emerging field in two-dimensional. Our techniques are based on ultra low current measurements (~10fA) at ultra low temperatures (10 mK) and high magnetic field (10T). We have expertise on quantum capacitance technique with resolution less than ~ 100aF to study the thermodynamic compressibility as well as we use noise spectroscopy (1/f and quantum noise) to know the screening properties as well as charges and statistics of quasi-particles.