Electrons inside a conductor are often described as flowing in response to an electric field. This flow rarely resembles anything like the familiar flow of water through a pipe, but three groups describe counterexamples (see the Perspective by Zaanen). Moll et al. found that the viscosity of the electron fluid in thin wires of PdCoO2 had a major effect on the flow, much like what happens in regular fluids. Bandurin et al. found evidence in graphene of electron whirlpools similar to those formed
![Light could make semiconductor computers a million times faster or even go quantum. Transition metal dichalcogenides are semiconductors with potential applications in solar cells. Bulk WSe 2 has an optical band-gap of ~1.35 eV with a temperature dependence of −4.6×10−4 eV/K.[9] WSe 2 photoelectrodes are stable in both acidic and basic conditions, making them potentially useful in electrochemical solar cells.[10][11][12] Light Cycle, Tungsten, Potential](https://i.pinimg.com/236x/f5/6a/33/f56a336db8f325404d20632bf6ba659e.jpg)
