Printed Magnetic Functional Elements for Flexible Resistive Sensors
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Solution Overview
Problem
Current methods for producing magnetic functional elements for resistance sensors are not cost-effective and lack the ability to adjust properties as needed, particularly in producing elastic and flexible sensors on various substrates.
Innovation Solution
A method involving the deposition of a magnetic material with a magnetoimpedance effect as a film on a substrate, followed by removal and processing into components, which are then formed into a dispersion or paste for printing onto another substrate, ensuring at least 5% of the components have a magnetoimpedance effect, such as GMR or AMR, using thin film technologies and various printing methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If magnetic functional elements are produced by depositing metal films onto planar rigid surfaces, then the shape of the element is determined, but the elements cannot be elastic or flexible and are limited to rigid substrates
Solution Approach 1:
The patent applies flexible and elastic substrates instead of rigid planar surfaces, allowing the magnetic functional elements to be bent and reshaped after production. This enables the elements to conform to various shapes and surfaces while maintaining their magnetic properties, directly resolving the contradiction between substrate flexibility and production feasibility
Solution Approach 2:
The patent introduces the capability for the magnetic functional elements to be dynamically reshaped after production by using flexible substrates. The elements can be bent, folded, or deformed into different configurations without compromising their functionality, enabling adaptability to various application requirements
2Productivity
If conventional metal film deposition is used, then magnetic functional elements are produced, but the production is not cost-effective for large-scale manufacturing
Solution Approach 1:
The patent segments the magnetic functional element into a magnetic material layer and a flexible substrate, allowing the magnetic layer to be produced separately and then integrated with the substrate. This segmentation enables more efficient production processes and reduces manufacturing costs for large-scale production
Solution Approach 2:
The patent applies the magnetic material to the flexible substrate in advance during the substrate preparation stage, rather than depositing metal films onto rigid surfaces after substrate selection. This preliminary action streamlines the production process and reduces the number of manufacturing steps required
3Weight of moving object
If magnetic sensors are made elastic and flexible, then they can be reshaped after production and are lighter, but the production method becomes more complex
Solution Approach 1:
The patent uses flexible and elastic substrates as the base for magnetic functional elements, which inherently provide the desired weight reduction and reshape capability. The flexibility is built into the substrate material itself rather than requiring complex structural designs, thereby reducing production process complexity
Solution Approach 2:
The patent creates a composite structure combining magnetic materials with flexible substrate materials. This composite approach allows the magnetic functional elements to inherit the flexibility and light weight of the substrate while maintaining the magnetic properties of the magnetic material, avoiding the need for complex production processes
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 allows for the simple, cost-effective production of printed magnetic functional elements with adjustable properties, enabling their use on flexible substrates and as free-standing elements, with precise control over electrical and thermal conductivity and magnetoresistance effects.
Implementation Method 1
The magnetoimpedance effect describes the change of the complex resistance of a magnetic material with the application of a magnetic field
Implementation Method 2
The thermal conductivity of such elements thus changes with the applied external magnetic field, such as with the so-called giant magnetothermal resistance effect
Data Source
AI summary
A method for producing printed magnetic functional elements for resistance sensors and printed magnetic functional elements. The invention refers to the field of electronics and relates to a method for producing resistance sensors, such as can be used, for example, in magnetic data storage for read sensors or in the automobile industry. The disclosure includes a simple and cost-effective production method and to obtain such printed magnetic functional elements with properties that can be adjusted as desire, in which a magnetic material is deposited onto a substrate as a film, is removed from the substrate and divided into several components and these components are applied on a substrate by means of printing technologies. Aspects are also directed to a printed magnetic functional element for resistance sensors of several components of a film, wherein at least 5% of the components of the functional element have a magnetoimpedance effect.