Memristor Material Tuning for Unique Signal Authentication

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Solution Overview

Problem

Memristors have not been widely adopted in commercial applications due to limitations in controlling signal responses and tuning characteristics, which hinders their integration into systems requiring specific electrical properties and unique identification features.

Innovation Solution

The system employs memristor materials with controlled oxygen vacancy transmission rates, allowing for real-time tuning of memristor characteristics and unique signal responses, including asymmetric time-based responses, to address timing-specific needs and provide repeatable uniqueness for anti-counterfeiting and authentication purposes, using materials like metal oxides and anion vacancies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If memristor materials are used in commercial applications, then memory and signal processing functionality is provided, but control over signal responses and tuning characteristics is limited

Engineering Contradiction:
Improvetunability of memristor characteristicsVSAvoidcomplexity of controlling signal responses
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by controlling oxygen vacancy transmission rates in memristor materials to tune electrical characteristics. By adjusting material composition and oxygen vacancy concentrations, the signal response parameters can be optimized for specific applications without increasing device structural complexity

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent uses composite memristor materials combining metal oxides with controlled oxygen vacancies to achieve both functionality and tunability. The composite structure allows independent optimization of base material properties and oxygen vacancy distribution to control signal responses

Inventive Principle:
Principle #40Composite materials

2Reliability

If unique signal responses are implemented for authentication, then anti-counterfeiting capability is provided, but manufacturing precision requirements increase

Engineering Contradiction:
Improveauthentication reliabilityVSAvoidprecision of oxygen vacancy control
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by creating spatially varying oxygen vacancy distributions within the memristor material. Different regions have different oxygen vacancy concentrations, producing unique local electrical characteristics that contribute to overall device uniqueness for authentication purposes

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent employs self-service through self-organizing oxygen vacancy distributions that naturally form during material processing. The oxygen vacancies self-arrange into characteristic patterns that provide unique electrical signatures without requiring precise external control during manufacturing

Inventive Principle:
Principle #25Self-service

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 enables the integration of memristors into ASIC circuitry and RF devices, providing customizable signal optimization, anti-piracy, and cyber security authentication through unique electrical signatures, enhancing system performance and security.

Implementation Method 1

memristor materials with controlled oxygen vacancy transmission rates, allowing for real-time tuning of memristor characteristics

Methodology Applied
Scientific EffectOxygen vacancy transmission: Diffusion

Data Source

PatentEP3968399B1System and device including memristor material
Publication Date: 2024.01.31 ROCKWELL COLLINS INC
  • EP3968399B1 patent drawingFigure 1A
  • EP3968399B1 patent drawingFigure 1B
  • EP3968399B1 patent drawingFigure 1C

AI summary

A system (100) may include a first conductive plate (105) configured at least to receive an input signal. The system may include a second conductive plate (105) configured at least to output an output signal. The system may further include a memristor material (106) positioned between the first conductive plate and the second conductive plate.