Graphene Heating Layer Absorbing Electromagnetic Waves

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Solution Overview

Problem

Graphene-based planar heating elements face challenges in achieving uniform heating, increasing heating rate and efficiency, and maintaining transparency due to limitations in lowering sheet resistance and the need for metal electrodes, which complicates curved surface processing.

Innovation Solution

A heating system incorporating a graphene heating layer that absorbs electromagnetic waves to generate heat, eliminating the need for separate electrodes and utilizing charge mobility for efficient heating, with a substrate that can be transparent and flexible, allowing for easy curved surface processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If metal electrodes are used to supply power to the heating elements, then power can be supplied effectively, but transparency is compromised and curved surface processing becomes difficult

Engineering Contradiction:

Improvepower supply effectivenessVSAvoidcurved surface processing

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent removes metal electrodes from the heating element structure entirely. Instead of using traditional metal electrode contacts, the invention employs a wireless power transmission system where electromagnetic waves induce currents directly in the graphene heating layer, eliminating the need for physical electrode connections and enabling transparent, flexible heating elements that can be processed on curved surfaces

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical electrical contact system (metal electrodes physically touching the heating element) with an electromagnetic field-based power transmission system. Electromagnetic waves are used to induce currents in the graphene layer without physical contact, substituting a mechanical system with a field-based system that enables transparency and flexibility

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Temperature

If Joule heating caused by internal resistance of graphene sheets is used, then heating can be generated, but heating uniformity cannot be ensured due to limitations in lowering sheet resistance

Engineering Contradiction:

Improveheating generationVSAvoidheating uniformity

Core Design Contradiction:

TemperatureVSManufacturing precision

Solution Approach 1:

The patent employs alternating electromagnetic fields that dynamically induce currents throughout the graphene heating layer. This dynamic electromagnetic induction creates uniform heating across the entire surface area, unlike static Joule heating which is limited by sheet resistance variations and electrode contact points

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent transitions from one-dimensional point-to-point heating through electrodes to three-dimensional volumetric heating through electromagnetic wave penetration. The electromagnetic waves can penetrate and induce currents throughout the entire graphene layer simultaneously, achieving uniform heating across the surface area rather than localized heating at electrode contact points

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If conventional heating elements are used, then heating function is provided, but heating rate and heating efficiency are difficult to increase

Engineering Contradiction:

Improveheating functionVSAvoidheating rate

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent changes the fundamental heating mechanism parameter from resistive heating (Joule heating) to electromagnetic induction heating. This parameter change enables much faster heating rates because electromagnetic waves can directly couple energy into the graphene layer throughout its volume, rather than relying on heat conduction from localized resistive heating points

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent utilizes the unique properties of graphene material with high electrical conductivity and large surface area, combined with electromagnetic induction, to achieve rapid and efficient heating. The composite structure of transparent conductive oxide electrodes and graphene heating layer creates a system that can rapidly convert electromagnetic energy to thermal energy with high efficiency

Inventive Principle:

Principle #40Composite materials

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 system achieves high heating rates with rapid temperature saturation, excellent temperature uniformity, and reduced power consumption, while maintaining transparency and ease of production, outperforming traditional Joule heating methods.

Implementation Method 1

the heating layer emits heat by absorbing the electromagnetic waves

Methodology Applied

Scientific EffectElectromagnetic wave absorption: Absorption (EM radiation)

Data Source

PatentUS12108513B2Heating system and heating element

Publication Date: 2024.10.01 GRAPHENE SQUARE INC

AI summary

The present specification provides a heating system including: a heating unit including a substrate and a heating layer provided on the substrate and including graphene; an electromagnetic wave irradiation unit configured to irradiate at least one region of the heating unit with electromagnetic waves; and a control unit configured to control an operation of the electromagnetic wave irradiation unit, wherein the heating layer emits heat by absorbing the electromagnetic waves.