In this project, we measure electron flow in graphene, a 2-D lattice of carbon atoms, and compare the results to simulations that we run. As current is passed through typical electrical devices, electron transport is dominated by momentum relaxing electron-phonon scattering, i.e. electrons colliding with the impurities and vibrations of the crystal's lattice structure. This is typical of the omhic regime. However, other modes of electron transport are possible. In clean graphene, for example, electrons are weakly coupled to lattice sites and electron-electron scattering dominate. In these interactions, momentum transferred between electrons is conserved. When measured over a range of temperatures, we find dips in the resistance, resulting from these hydrodynamic electrons’ tendency to “pull” one another along with the bulk. Analogous to honey, these electrons have viscosity, which unlike resistivity, is a property of the fluid. This research will further elucidate properties of this electron fluid. To complete this project, we will fabricate graphene devices and study them in a table-top cryostat, measuring the current output from 4K to room temperature. We are particularly interested in how this viscous fluid behaves as it encounters a boundary within the device, an open question in the field of solid-state physics. We use a low voltage probe tip which can be positioned anywhere within the device. By blocking a portion of the drain with the probe-tip and measuring the current output along segments of the drain, we may gain insight into the boundary conditions of the electron fluid. This research will directly benefit the electronics industry: the next generation of computer chips will utilize 2-D materials such as graphene, potentially enabling the useful properties of hydrodynamic flow to be exploited.