Nanowires Plated on Nanoparticles for Strong Adhesion
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Solution Overview
Problem
Conventional methods for attaching multiple components together, such as in semiconductor packages, face issues with adhesion strength, mechanical stability, electrical and thermal conductivity, and electromigration, often requiring complex processes and materials that are costly or inefficient.
Innovation Solution
A system comprising nanoparticles and nanowires is used, where nanoparticles are deposited on surfaces and nanowires are plated to extend from them, allowing components to be fused together at room temperature through pressure and ambient heat, providing strong adhesion, mechanical stability, and good electrical and thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional adhesive materials (glue, nails, screws) are used to attach components, then mechanical strength and adhesion are achieved, but electrical and thermal conductivity deteriorate
Solution Approach 1:
The patent uses a composite attachment structure consisting of nanoparticles (e.g., metal or ceramic particles) embedded in an adhesive matrix. This composite material provides both mechanical adhesion strength and electrical/thermal conductivity pathways through the conductive nanoparticle network, resolving the contradiction between mechanical strength and conductivity preservation.
2Reliability
If conventional attachment methods are used, then components are securely attached, but the process becomes complex and costly
Solution Approach 1:
The patent combines multiple functions into a single attachment layer: mechanical bonding, electrical conduction, and thermal conduction are all achieved through the same nanoparticle-enhanced adhesive layer, eliminating the need for separate conductive pathways or additional attachment steps, thus reducing process complexity.
Solution Approach 2:
The conductive nanoparticles within the adhesive matrix automatically form conductive networks during the adhesive curing process, providing self-organizing conductive pathways without requiring external patterning or additional processing steps, thereby simplifying the overall manufacturing process.
3Strength
If conventional attachment materials are used, then mechanical bonding is achieved, but electromigration issues arise
Solution Approach 1:
The use of ceramic nanoparticles or oxide particles in the adhesive composite provides electromigration resistance while maintaining mechanical strength, as these materials do not suffer from electromigration effects that plague pure metal conductors, thus resolving the contradiction between mechanical bonding and electromigration resistance.
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 offers a robust, efficient, and cost-effective method for attaching components with strong adhesion, mechanical stability, minimal electromigration, and improved thermal and electrical conductivity, suitable for various applications beyond semiconductor packages.
Implementation Method 1
depositing a set of nanoparticles on a surface
Implementation Method 2
electroplating the set of nanoparticles to cause a set of nanowires to extend from the set of nanoparticles and through the plurality of orifices
Implementation Method 3
The sets of nanowires are fused to each other
Data Source
AI summary
In some examples, a system comprises a set of nanoparticles and a set of nanowires extending from the set of nanoparticles.