Memristor Voltage Resistance Control via Stacked Metal-Oxide Layers

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Solution Overview

Problem

Current systems for controlling voltage resistance in memristive apparatuses are limited by a narrow resistance range and inefficient power consumption, which restricts the dynamic control of synaptic connections in neural networks.

Innovation Solution

The implementation of a voltage resistance controlling apparatus with multiple filamentary sections made of metal-oxides, where a computer system applies predetermined voltages to individual filament layers to increase resistance, allowing for enhanced control and reduced power consumption by tuning conductance through conductive channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single metal-oxide layer is used in memristive apparatus, then the device structure is simple, but the resistance range is limited to 100-1000 Ohms

Engineering Contradiction:
Improvedevice structureVSAvoidresistance range
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent divides the single metal-oxide layer into multiple stacked metal-oxide layers (first metal-oxide layer and second metal-oxide layer). Each layer can be independently controlled by applying specific voltages to form or break conductive filaments, enabling the resistance to be adjusted across a wider range (100-10,000 Ohms) compared to a single layer structure.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If higher resistance control is achieved through multiple filament layers, then the resistance range increases to 10,000 Ohms, but the power consumption increases

Engineering Contradiction:
Improveresistance rangeVSAvoidpower consumption
Core Design Contradiction:
Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic control of resistance by allowing the system to switch between different conductive filament configurations in the stacked metal-oxide layers. By dynamically forming or breaking filaments in specific layers based on applied voltages, the system can achieve high resistance values (up to 10,000 Ohms) only when needed, rather than maintaining high resistance continuously, thus reducing overall power consumption while preserving wide resistance range capability.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach significantly increases the resistance range from 100 Ohms to 10,000 Ohms, enabling more efficient and cost-effective control of voltage resistance in memristive apparatuses, particularly in neural networks, by dynamically modifying the stoichiometry and conductance of metal-oxide layers.

Implementation Method 1

A memristor is a non-linear two-terminal electrical component relating electric conductivity and voltage. Electrical resistance of an object is a measure of its opposition to the flow of electrical current.

Methodology Applied
Scientific EffectElectrical Resistance: Electrical Resistance

Implementation Method 2

a second layer disposed on the second layer, where the second first layer is made of an electrically conductive metal-oxide

Methodology Applied
Scientific EffectConduction (electrical): Conduction (electrical)

Data Source

PatentUS11615843B2Controlling voltage resistance through metal-oxide device
Publication Date: 2023.03.28 INTERNATIONAL BUSINESS MACHINE CORPORATION
  • US11615843B2 patent drawing
  • US11615843B2 patent drawing
  • US11615843B2 patent drawing

AI summary

Embodiments of the present invention provide a computer system, a voltage resistance controlling apparatus, and a method that comprises at least two electrodes on proximal endpoints; a first layer disposed on the at least two electrodes, wherein the first layer is a made of a metal-oxide; a second layer disposed on the second layer, wherein the second first layer is made of an electrically conductive metal-oxide; a forming contact disposed on the second layer, wherein a combination of the forming contact disposed on the first layer disposed on the second layer operatively connects the at least two electrodes; and a computer system operatively connected to the forming contact, wherein the computer system is configured to apply a predetermined voltage to the first layer and the second layer respectively and display an overall resistance increase using a user interface.