memristor


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memristor

(MEMory ResISTOR) A non-volatile memory technology that can change its resistance in varying levels. It can offer resistance in two states for a digital 0 or 1 or to levels in between to go beyond a binary system.

In 2008, HP demonstrated a memristor comprising a cell made of two layers of titanium dioxide. One layer is conductive because it is missing a few oxygen atoms. When a positive charge is applied to the layer with the missing atoms, the vacancies are pushed into the other layer, making it conductive as well and changing its resistance. The more the cell is charged, the lower its resistance. Negative charges reverse the effect.

Very Fast and High Density
Two distinct advantages of memristors are that moving the vacancies between the adjacent levels can be done much faster than other known switching methods, and the cell density approaches that of hard disks. Theorized by Leon Chua in the early 1970s, and if commercially viable, memristors may replace flash memory and dynamic RAM (DRAM) in the future. See future memory chips and RRAM.
References in periodicals archive ?
objective 5: Design a simulator (based on calibrated models of memristor devices & Building blocks) and fpga emulator for the new architecture (cim device combined with conventional cpu) in order demonstrate its superiority.
In a study published in the journal Scientific Reports, researchers show how they have pushed the memristor - a simpler and smaller alternative to the transistor, with the capability of altering its resistance and storing multiple memory states - to a new level of performance after experimenting with its component materials.
In this study, Lu's team used a special memristor that memorizes events only in the near history.
Abstract: In this paper, new fully floating memristor emulator circuit that consumes ultra-low energy is presented.
A June 2016 article discusses experiments that mapped oxygen atom movement within a memristor.
In memristor when current flows in one direction, the electrical resistance increases and when current flows in the opposite direction, the resistance decreases.
According to the companies, this partnership will centre around HP's Memristor technology and expertise and SanDisk's non-volatile ReRAM memory technology and manufacturing and design expertise to create new enterprise-wide solutions for Memory-driven Computing.
Lin and Wang [22] presented an image encryption algorithm based on chaos and piecewise linear memristor in Chua's circuit.
Next generation memory technologies covered in this report are the "non-volatile next generation memory technologies" such as Memristor or Resistive Random Access Memory (ReRAM), Phase Change Memory (PCM), Magneto-resistive Random Access Memory (MRAM), and Ferroelectric Random Access Memory (FeRAM), among other technologies.
Por lo tanto, la importancia del memristor reside en sus propiedades no lineales.
HP made headlines in May 2008 when a team led by Stanley Williams introduced the memristor in Nature and demonstrated its potential for fast, high-capacity storage (SN: 5/24/08, p.
The discovery of the physical model of a memristor by the HP group [1] has attracted considerable interest from researchers in the areas of memory, neural synapses and logic circuit applications [2]-[6].