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A memristor (/ ˈ m ɛ m r ɪ s t ər /; a portmanteau of memory resistor) is a non-linear two-terminal electrical component relating electric charge and magnetic flux linkage.It was described and named in 1971 by Leon Chua, completing a theoretical quartet of fundamental electrical components which also comprises the resistor, capacitor and inductor.
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Often the isolation capabilities are inferior to the use of transistors if the on/off ratio for the selector is not sufficient, limiting the ability to operate very large arrays in this architecture. Chalcogenide-based threshold switches have been demonstrated as a viable selector for high-density PCM arrays [22]
In electronics, cut-off is a state of negligible conduction that is a property of several types of electronic components when a control parameter (that usually is a well-defined voltage or electric current, but could also be an incident light intensity or a magnetic field), is lowered or increased past a value (the conduction threshold).
Stan Williams of HP Labs also argued that ReRAM was a memristor. [21] However, others challenged this terminology and the applicability of memristor theory to any physically realizable device is open to question. [22] [23] [24] Whether redox-based resistively switching elements (ReRAM) are covered by the current memristor theory is disputed. [25]
Eye diagram showing an example of two power levels in an OOK modulation scheme, which can be used to calculate extinction ratio. P 1 and P 0 are represented by (binary 1) and (binary 0) respectively. In telecommunications, extinction ratio (r e) is the ratio of two optical power levels of a digital signal generated by an optical source, e.g., a ...
The reasons for this surge of interest are manifold. The performance of OFETs, which can compete with that of amorphous silicon (a-Si) TFTs with field-effect mobilities of 0.5–1 cm 2 V −1 s −1 and ON/OFF current ratios (which indicate the ability of the device to shut down) of 10 6 –10 8, has improved significantly.