Reprogrammable Nanomanufacturing via Magnetic Field Patterning

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Solution Overview

Problem

Current nanomanufacturing techniques face challenges in assembling nanoscale objects into controlled, user-defined patterns at a lower cost and with reduced capital investment, as existing methods rely on top-down processing and non-reprogrammable patterned magnetic materials.

Innovation Solution

Employing magnetic recording heads to pattern magnetic media, which immobilizes nanostructures into programmable arrays using stray fields, and then assembling these structures into macroscale structures through robotic pick and place transfer, combined with soft lithographic techniques for hierarchical 3D multilayer structure manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If top-down lithography techniques are used to achieve nanoscale resolution, then manufacturing precision is improved, but device complexity and capital investment increase

Engineering Contradiction:

Improvenanoscale resolutionVSAvoidcomplexity of lithography equipment

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical lithography systems with a magnetic field-based self-assembly approach. Magnetic recording heads generate magnetic fields that direct the self-assembly of nanoparticles into desired patterns, eliminating the need for expensive top-down lithography equipment while achieving comparable nanoscale resolution

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent employs self-assembly of nanoparticles driven by magnetic fields. The nanoparticles automatically organize themselves into controlled patterns through magnetic interactions, eliminating the need for complex external manipulation equipment and reducing device complexity while maintaining manufacturing precision

Inventive Principle:

Principle #25Self-service

2Productivity

If patterned magnetic materials in set configurations are used to trap particles, then productivity is improved, but adaptability is worsened due to non-reprogrammability

Engineering Contradiction:

Improveparticle trapping efficiencyVSAvoidreprogrammability of patterns

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent uses dynamically controllable magnetic fields from recording heads instead of static patterned magnetic materials. The magnetic field patterns can be reprogrammed in real-time to create different particle trapping configurations, maintaining high productivity while enabling full adaptability and reprogrammability of the assembly patterns

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The magnetic recording head serves multiple functions: it can generate magnetic fields for particle trapping, reprogram patterns on-demand, and create arbitrary configurations. This single device replaces multiple fixed-pattern magnetic materials, achieving both high productivity and universal adaptability across different assembly designs

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If self-assembly techniques are used to create regular arrays, then ease of manufacture is improved, but manufacturing precision is worsened due to imperfect regularity

Engineering Contradiction:

Improvesimplicity of assembly processVSAvoidregularity of nanostructure arrays

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces passive self-assembly with active magnetic field-directed assembly. Magnetic fields provide precise spatial control over nanoparticle positioning, maintaining the ease of manufacture associated with self-assembly while dramatically improving the precision and regularity of the resulting arrays through field-based guidance

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 enables customizable, reprogrammable local nanoscale assembly with reduced costs and capital investment, achieving nanoscale resolution and flexibility in assembling nanostructures into larger structures, making it economically viable for nanomanufacturing.

Implementation Method 1

A recording head is moved in a predetermined manner (e.g., controlled by a computer program) to produce a magnetic field profile that substantially immobilizes the magnetically coated nanoparticle within the curable polymeric solution in the well.

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

The curable polymeric solution is cured such that the magnetically coated nanoparticle remains substantially immobilized after the magnetic field profile is removed.

Methodology Applied

Scientific EffectCuring: Photopolymerisation

Data Source

PatentUS8617643B2Reprogrammable parallel nanomanufacturing

Publication Date: 2013.12.31 UNIVERSITY OF SOUTH CAROLINA

AI summary

A method of producing a nanoscale structure having substantially immobilized nanoparticles arranged at a predetermined patterned is generally disclosed. First, a curable polymeric solution is placed within a well defined by a wafer. The curable polymeric solution includes a curable polymeric material and a magnetically coated nanoparticle. The well is positioned adjacent to an atomically-smooth medium. A recording head is moved in a predetermined manner to produce a magnetic field profile that substantially immobilizes the magnetically coated nanoparticle within the curable polymeric solution in the well. The curable polymeric solution is cured such that the magnetically coated nanoparticle remains substantially immobilized after the magnetic field profile is removed.