NiMo Nanomaterial Earphone Diaphragm With Concentric Ring Coating

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Solution Overview

Problem

Traditional earphone diaphragm materials face limitations in lightweight, high sensitivity, and wide frequency response, and the preparation methods are complex and costly, making it difficult to achieve precise control and functionalization.

Innovation Solution

A NiMo-based nanomaterial earphone diaphragm is developed using a MoNiP2/Ni3S2/MoS2 nanomaterial with a rod-shaped cluster structure, applied in a concentric ring form on a paper base film, interconnected by connecting lines, with a precise spraying process to enhance acoustic and conductive performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional materials (metal, plastic, polymer) are used for earphone diaphragms, then basic acoustic needs are met, but lightweight performance, high sensitivity, and wide frequency response are limited

Engineering Contradiction:
Improveacoustic performanceVSAvoiddiaphragm weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent uses a composite structure combining paper base film with NiMo-based nanomaterial coating (MoNiP2/Ni3S2/MoS2). This composite approach leverages the lightweight properties of paper and the excellent acoustic/conductive properties of NiMo nanomaterials to achieve both lightweight performance and high acoustic reliability simultaneously

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent changes the material parameters by using nanoscale MoNiP2/Ni3S2/MoS2 clusters with specific rod dimensions (20 μm length, 1.5-2 μm width) and controlling coating thickness (300-500 nm), transforming the material properties to achieve superior acoustic response and sensitivity while maintaining lightweight characteristics

Inventive Principle:
Principle #35Parameter changes

2Reliability

If traditional preparation methods are used for NiMo-based materials, then material synthesis is achieved, but the process is complex and costly with difficult precise control

Engineering Contradiction:
Improvematerial performanceVSAvoidpreparation process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the NiMo-based material into distinct nanoscale components (MoNiP2/Ni3S2/MoS2 cluster structure) with specific size ranges, enabling precise control over material properties while simplifying the preparation process through controlled hydrothermal synthesis followed by simple spraying application

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent optimizes preparation parameters including hydrothermal treatment conditions (temperature, time, pH) and spraying parameters (coating thickness 300-500 nm, uniform distribution) to achieve precise control over nanomaterial structure and distribution, reducing process complexity while maintaining high material performance

Inventive Principle:
Principle #35Parameter changes

3Reliability

If concentric ring structure with connecting lines is implemented, then acoustic response and conductive efficiency are improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improveacoustic responseVSAvoidcoating thickness control
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent divides the diaphragm into concentric ring segments connected by radial lines, creating a modular structure that improves acoustic response through controlled vibration modes while distributing manufacturing tolerance across multiple segments, reducing overall precision requirements

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent specifies optimal coating thickness (300-500 nm) and controls material distribution through spraying parameters to achieve the desired acoustic performance. This parameter optimization balances manufacturing precision requirements with performance goals, making the process feasible for mass production

Inventive Principle:
Principle #35Parameter changes

4Reliability

If NiMo-based nanomaterial is sprayed on base film, then conductivity and acoustic performance are enhanced, but material distribution uniformity becomes critical

Engineering Contradiction:
Improveconductive efficiencyVSAvoidmaterial distribution uniformity
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent optimizes spraying parameters including spray distance, spray angle, and coating thickness (300-500 nm) to achieve uniform material distribution. By controlling these parameters, the patent ensures consistent NiMo nanomaterial distribution across the base film, achieving both high conductivity and acoustic performance without requiring excessive manufacturing precision

Inventive Principle:
Principle #35Parameter changes

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 diaphragm achieves improved acoustic response, reduced distortion, enhanced structural stability, and increased conductivity, ensuring reliable sound quality and extended service life.

Implementation Method 1

the high conductivity of the NiMo-based nanomaterial ensures a good electrical connection between the diaphragm and a drive unit

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

the high elastic modulus and low damping characteristics of the material enable the diaphragm to respond to audio signals more accurately

Methodology Applied
Scientific EffectAcoustic vibration: Vibration

Data Source

PatentUS20250386159A1Nimo-based nanomaterial earphone diaphragm
Publication Date: 2025.12.18 HEAD DIRECT (KUNSHAN) CO LTD
  • US20250386159A1 patent drawing

AI summary

The present disclosure discloses a NiMo-based nanomaterial earphone diaphragm sand a preparation method thereof. The diaphragm uses a paper base film as the basis, and a uniform distribution of a NiMo-based nanomaterial coating is formed on a surface of the base film by plasma modification and electrostatic spraying technology, forming a concentric ring structure and using the NiMo-based nanomaterial as connecting lines to enhance the stability and conductive performance of the overall structure. This design not only significantly improves the audio quality performance of the earphones, including clarity, detail restoration, and dynamic range, but also greatly improves the durability and environmental adaptability of the diaphragm. The present disclosure provides an innovative solution for high-end earphone manufacturing, and is especially suitable for music lovers who pursue the ultimate audio experience and professional audio fields.