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MOS Capacitor

MOS Capacitor

A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...

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Updated: Sep 21, 2025

Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes

Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes

Published on: March 9, 2019

Wafer-scale solution-processed 2D material analog resistive memory array for memory-based computing.

Baoshan Tang¹, Hasita Veluri¹, Yida Li¹

¹Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117576, Singapore.

Nature Communications

|June 1, 2022

Summary

This summary is machine-generated.

Solution-processed two-dimensional molybdenum disulfide (MoS₂) memristor arrays demonstrate high performance and reliability for next-generation information storage and neuromorphic computing applications.

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Area of Science:

Materials Science
Nanotechnology
Electrical Engineering

Background:

High-density and reliable resistive random-access memories (ReRAM) are essential for advanced information storage and neuromorphic computing.
Two-dimensional (2D) semiconductors offer promising properties for next-generation electronic devices.

Purpose of the Study:

To report the wafer-scale integration of solution-processed 2D MoS₂ memristor arrays.
To evaluate the performance and characteristics of these MoS₂-based memristors for memory applications.

Main Methods:

Wafer-scale integration of solution-processed 2D MoS₂ nanosheets.
Fabrication and characterization of MoS₂ memristor arrays.
Investigation of switching characteristics modulation via inter-flake sulfur vacancies diffusion.
Demonstration of MNIST handwritten digits recognition using the fabricated memristors.
Construction of a monolithic three-dimensional (3D) memory cube by stacking 2D MoS₂ layers.

Main Results:

MoS₂ memristors exhibit excellent endurance, long memory retention, and low device variations.
High analog on/off ratio and linear conductance update characteristics were achieved.
Switching characteristics are modulated by flake size distribution influencing sulfur vacancy diffusion.
Achieved >98.02% accuracy in MNIST handwritten digits recognition.
Successfully demonstrated a monolithic 3D memory cube using stacked 2D MoS₂ layers.

Conclusions:

Solution-processed 2D MoS₂ memristors are highly suitable for analog memory applications.
The ability to control switching characteristics through flake size offers a novel modulation pathway.
The demonstrated 3D memory cube architecture paves the way for high-density neuromorphic computing systems.