Multilayered Metallic Microstructure With Template-Grown Nanowires

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Solution Overview

Problem

Existing methods for synthesizing copper nanowires (CuNWs) face challenges such as inconsistent results, limited control over morphology, suboptimal yield, and formation of undesirable byproducts, complicating the integration of multilayered metallic structures in advanced technologies.

Innovation Solution

A method involving stacking membranes with varying pore sizes and orientations, followed by bonding and electrochemical deposition to form a multilayered metallic microstructure with integrally formed metal nanowires, enhancing structural integrity and mechanical robustness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional synthesis methods (template-assisted electrodeposition, hydrothermal processing, chemical reduction) are used to fabricate copper nanowires, then copper nanowires can be produced, but the results are inconsistent with limited control over morphology, suboptimal yield, and formation of undesirable byproducts

Engineering Contradiction:

Improvecontrol over nanowire morphologyVSAvoidprocessing complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The invention divides the nanowire synthesis into distinct segments: first forming a porous template structure, then using electrochemical deposition to grow nanowires within the template pores. This segmentation allows independent optimization of template fabrication and nanowire growth, achieving precise morphological control while simplifying the overall process by eliminating complex hydrothermal or chemical reduction steps

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The porous template is fabricated in advance with predetermined pore size, shape, and arrangement before nanowire deposition. This preliminary action establishes the exact morphology framework that guides nanowire growth, ensuring consistent and controllable nanowire structure without requiring complex real-time control during synthesis

Inventive Principle:

Principle #10Preliminary action

2Productivity

If conventional synthesis methods are used, then copper nanowires can be produced, but production yield is suboptimal and undesirable byproducts are formed

Engineering Contradiction:

Improveproduction yieldVSAvoidundesirable byproducts

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The invention replaces complex chemical reduction mechanisms with electrochemical deposition. By applying electrical current through copper ion-containing electrolyte, nanowires are deposited directly and cleanly within template pores, achieving high yield without generating copper oxide or nanoparticle byproducts that plague conventional chemical methods

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The porous template structure provides confined spaces that guide copper ion deposition into uniform nanowires. The porous architecture ensures high surface area for deposition, maximizing production yield while the confined geometry prevents uncontrolled nanoparticle formation and byproduct generation

Inventive Principle:

Principle #31Porous materials

3Strength

If multilayered metallic structures are fabricated using existing techniques, then multilayered composites can be formed, but structural integrity and mechanical robustness are compromised

Engineering Contradiction:

Improvestructural integrityVSAvoidfabrication difficulty

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The invention merges multiple nanowire layers into a single integrated structure by continuous electrochemical deposition through stacked templates. The metal layers are metallurgically bonded at interfaces during deposition, creating a unified structure with superior structural integrity compared to separately fabricated layers that would require additional bonding steps

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention creates composite multilayered structures where metal nanowires are embedded within porous template matrices. This composite architecture provides both mechanical robustness from the metal network and structural support from the template, achieving enhanced strength while simplifying fabrication compared to pure metal multilayer structures

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 method enables customizable architectural design, improved structural integrity, and mechanical robustness, with higher production yields and uniform properties, suitable for applications in biomedical devices, sensor technologies, and energy storage devices.

Implementation Method 1

bonding the stacked membranes together

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 2

forming the multilayered metallic microstructure as an integrated structure composed of metal nanowires deposited or grown within the pores of the stacked membranes

Methodology Applied

Scientific EffectElectrochemical deposition: Electrodeposition

Data Source

PatentUS20250360692A1Multilayered metallic microstructure

Publication Date: 2025.11.27 PURDUE RES FOUND

AI summary

A method of fabricating a multilayered metallic microstructure includes stacking a plurality of porous membranes having various pore sizes and/or orientations, and joining the stacked plurality of porous membranes. The method further includes manufacturing the multilayered metallic microstructure as an integral microstructure formed by a plurality of nanowires defined in pores of the plurality of porous membranes.