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ACS Nano. 2017 Nov 28;11(11):11298-11305. doi: 10.1021/acsnano.7b05762. Epub 2017 Oct 18.

Light-Gated Memristor with Integrated Logic and Memory Functions.

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Laboratory of Nanofabrication and Novel Device Integration, Institute of Microelectronics, Chinese Academy of Sciences , Beijing 100029, P.R. China.
Information Storage Materials Laboratory, Department of Electrical and Computer Engineering, National University of Singapore , 4 Engineering Drive 3, Singapore 117583.


Memristive devices are able to store and process information, which offers several key advantages over the transistor-based architectures. However, most of the two-terminal memristive devices have fixed functions once made and cannot be reconfigured for other situations. Here, we propose and demonstrate a memristive device "memlogic" (memory logic) as a nonvolatile switch of logic operations integrated with memory function in a single light-gated memristor. Based on nonvolatile light-modulated memristive switching behavior, a single memlogic cell is able to achieve optical and electrical mixed basic Boolean logic of reconfigurable "AND", "OR", and "NOT" operations. Furthermore, the single memlogic cell is also capable of functioning as an optical adder and digital-to-analog converter. All the memlogic outputs are memristive for in situ data storage due to the nonvolatile resistive switching and persistent photoconductivity effects. Thus, as a memdevice, the memlogic has potential for not only simplifying the programmable logic circuits but also building memristive multifunctional optoelectronics.


light-gated memristor; memcomputing; memlogic; memristive switching; persistent photoconductance


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