In this thesis, we have described the experiments on two main systems: the electromechanics of graphene drums in the low tension regime and doubly clamped InAs nanowires in the high tension regime. The tunability of these systems were seen to be related to the built-in tension. The high tunability of the graphene drums allowed us to parametrically modulate the frequencies and tune the coupling between the mechanical modes. The low tunability of the InAs nanowire resonators allowed us to do Joule heating studies to probe the thermal properties of the system.

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