Nanostructure Clump Formation via Stimulus-Responsive Substrates

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Solution Overview

Problem

There is a need for new uses and applications of nanostructures, as well as improved methods for manufacturing and utilizing them, particularly in forming specific configurations such as clumps for enhanced functionality.

Innovation Solution

A substrate with nanostructures having first and second ends, where the second ends are bent to form clumps, either through capillary forces or using a volume-tunable-material that changes thickness in response to stimuli, allowing for the formation and manipulation of nanostructure clumps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If nanostructures are formed with fixed configurations, then manufacturing is simple, but functionality and adaptability are limited

Engineering Contradiction:
ImprovefunctionalityVSAvoidconfiguration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by making the nanostructure configurations changeable through stimulus-response mechanisms. Volume-tunable materials change thickness in response to stimuli (temperature, pH, electrical fields), causing nanostructures to transition between different configurations (e.g., clumped vs. separated states). This dynamic adaptability allows a single apparatus to perform multiple functions without requiring multiple fixed-configured devices.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent utilizes parameter changes by altering physical or chemical parameters of the volume-tunable-material to control nanostructure configuration. By changing material properties (such as swelling/deswelling in response to pH, temperature, or ionic strength), the system transforms between different functional states. This parameter-based control enables versatile functionality while maintaining a relatively simple base structure.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If nanostructure configurations are changed manually, then functionality is improved, but manufacturing complexity and time increase

Engineering Contradiction:
Improveconfiguration flexibilityVSAvoidmanufacturing simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent implements self-service through stimulus-responsive materials that automatically adjust nanostructure configurations without manual intervention. When exposed to specific stimuli (e.g., temperature changes, pH shifts, electrical fields), the volume-tunable-material self-regulates its thickness and consequently self-organizes the nanostructures into desired configurations. This eliminates the need for complex manual assembly processes while maintaining configuration flexibility.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces mechanical manipulation systems with field-based control mechanisms. Instead of physically handling or mechanically positioning nanostructures, the system uses chemical, thermal, or electrical fields to trigger automated reconfiguration. This substitution of mechanical operations with non-contact field interactions simplifies manufacturing while enabling precise control over nanostructure arrangements.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Speed

If fixed configuration methods are used, then manufacturing is fast, but response time to functional changes is slow

Engineering Contradiction:
Improveresponse timeVSAvoidmanufacturing speed
Core Design Contradiction:
SpeedVSProductivity

Solution Approach 1:

The patent employs periodic or pulsed stimuli to rapidly switch nanostructure configurations. By applying intermittent stimuli (e.g., periodic temperature cycles, pulsed electrical fields, or oscillating pH changes), the system can quickly transition between states and maintain high response speed. This periodic action allows the system to adapt rapidly to changing functional requirements without requiring continuous manufacturing processes.

Inventive Principle:
Principle #19Periodic action

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

Enables the creation of nanostructure arrays with controlled configurations, offering potential applications in various fields such as optical properties, drug release systems, and biological characterization, with fast response times and reversible functionality.

Implementation Method 1

The method of manufacture may further include bringing together at least a portion of the second ends to form two or more similarly configured clumps

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Implementation Method 2

exposing the volume-tunable-material to a stimulus, the stimulus changing a thickness of the volume-tunable-material. The change of thickness of the volume-tunable-material may either bring together at least a portion of the second ends to form two or more similarly configured clumps of two or more nanostructures, or move apart the second ends of two or more similarly configured clumps of two or more nanostructures

Methodology Applied
Scientific EffectVolume-tunable material response to stimulus:

Data Source

PatentUS7764004B2Large area induced assembly of nanostructures
Publication Date: 2010.07.27 NOKIA OF AMERICA CORP
  • US7764004B2 patent drawing
  • US7764004B2 patent drawing
  • US7764004B2 patent drawing

AI summary

Provided is an apparatus. In one embodiment, this apparatus includes a substrate having a surface, and a plurality of nanostructures each having a first end and a second end, wherein the first end of each of the plurality of nanostructures is attached to the surface. At least a portion of the second ends of the plurality of nanostructures, in this embodiment, are bent toward one another to form two or more similarly configured clumps each including two or more nanostructures.