Magnetoactive Fluid Light Emission Device for Magnetic Field Sensing
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Solution Overview
Problem
Existing magnetic-interactive displays face challenges in miniaturization, high cost, and complexity due to the need for a microprocessor-based connection structure for sensing and visualizing magnetic fields.
Innovation Solution
A light emission device comprising a light emission layer, a substrate, electrodes, and a magnetoactive fluid layer with nanostructures that change arrangement and distribution in response to magnetic fields, allowing for the formation and elimination of a conductive bridge to control light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a microprocessor-based connection structure is used for sensing and visualizing magnetic fields, then the sensing and visualization function is achieved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the magnetic sensing function and light visualization function into a single integrated device. The magnetoactive fluid layer with conductive nanowires and magnetic nanoparticles directly modulates light emission from the light emission layer in response to magnetic fields, eliminating the need for separate microprocessors, sensors, and display components that would otherwise be required to achieve magnetic field sensing and visualization
Solution Approach 2:
The light emission device performs multiple functions simultaneously: it acts as a magnetic field sensor, a signal processor, and a visual display. The magnetoactive fluid layer responds to magnetic fields by changing the arrangement and distribution of nanostructures, which directly modulates the light emission properties, enabling the device to sense, process, and visualize magnetic fields in a single multi-functional component
2Adaptability or versatility
If a microprocessor-based connection structure is used for sensing and visualizing magnetic fields, then the sensing and visualization function is achieved, but the manufacturing cost increases
Solution Approach 1:
The patent merges the magnetic sensing function and light visualization function into a single integrated device. The magnetoactive fluid layer with conductive nanowires and magnetic nanoparticles directly modulates light emission from the light emission layer in response to magnetic fields, eliminating the need for separate microprocessors, sensors, and display components that would otherwise be required to achieve magnetic field sensing and visualization
Solution Approach 2:
The patent employs inexpensive nanomaterials including conductive nanowires and magnetic nanoparticles that can be synthesized through relatively simple and low-cost processes. These nanomaterials replace expensive microprocessor-based components, enabling cost-effective manufacturing of magnetic field sensing and visualization devices
3Adaptability or versatility
If a microprocessor-based connection structure is used for sensing and visualizing magnetic fields, then the sensing and visualization function is achieved, but miniaturization becomes difficult
Solution Approach 1:
The patent merges the magnetic sensing function and light visualization function into a single integrated device. The magnetoactive fluid layer with conductive nanowires and magnetic nanoparticles directly modulates light emission from the light emission layer in response to magnetic fields, eliminating the need for separate microprocessors, sensors, and display components that would otherwise be required to achieve magnetic field sensing and visualization
Solution Approach 2:
The patent embeds multiple functional components at the nanoscale within the magnetoactive fluid layer. Conductive nanowires with magnetic nanoparticles nested on their surfaces are incorporated into the light emission layer, creating a nested hierarchical structure that enables complex magnetic sensing and light modulation functions in an extremely compact volume
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
The device enables efficient sensing, visualization, and non-volatile memory of magnetic fields without a complex connection structure, facilitating miniaturization and reducing costs, while also allowing for wearable and flexible device applications.
Implementation Method 1
a magnetoactive fluid layer disposed on a second surface side of the light emission layer and having a plurality of nanostructures of which arrangement and distribution is configured to change according to an application of a magnetic field
Implementation Method 2
The light emission layer includes a material having an electroluminescence property which is configured to emit light based on an electric field generated between the first and second electrodes by the application of an alternating current AC signal to said electrodes
Data Source
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AI summary
Disclosed are a light emission device including a magnetoactive element, a method of fabricating the same, and an electronic device including the light emission device. The disclosed light emission device may include a light emission layer; a first electrode and a second electrode spaced apart from each other on a first surface side of the light emission layer; and a magnetoactive fluid layer disposed on a second surface side of the light emission layer and having a plurality of nanostructures of which arrangement and distribution is configured to change according to application of a magnetic field. The light emitting properties of the light emission layer may be changed according to the arrangement and distribution of a plurality of nanostructures in the magnetoactive fluid layer. The plurality of nanostructures may include conductive nanowire and magnetic nanoparticle provided on the surfaces of the conductive nanowire.