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The memristor concept was envisioned by circuit theorist Leon Chua and is described as a nonlinear, passive two-terminal electrical component linking electric charge and magnetic flux. The passive circuit elements maintain a relationship between time integrals of current and voltage.
Since his first concept, Chua says the definition could be generalized to cover all forms of two terminal non-volatile memory devices based on resistance switching. This fourth class of electrical circuit joins the resistor, capacitor and inductor that exhibit their unique properties at a nanoscale.
Even through memristor research is currently under way by companies such as Hewlett-Packard, Intel, SK Hynix and HRL Laboratories, there is still no discrete version available for fast prototyping and component building. There are, however, early prototypes. There is still much research on what are the best materials to use, but titanium dioxide memristor is currently showing the most promise.
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