Title: Superconducting junctions as detectors of Dirac fermions and Majorana modes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Abstract: In this talk I would discuss how superconducting junctions can be used as phase sensitive detectors for Dirac and Majorana fermions. With a brief introduction to the physics of Dirac like materials, i.e materials whose low energy excitations obey an effective Dirac equation viz. graphene, I would discuss the transport and dynamics in superconducting junctions of such materials. In the second part of the talk, I would discuss dynamics in a superconducting junction with effective p-wave pairing amplitude and show that analysis of the current-voltage characteristics reveals robust phase-sensitive signatures for existence of Majorana quasi-particles in such junctions.