Nanostructure Anchoring via Fluid Layer Control

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Solution Overview

Problem

Current methods for forming nanostructure composites lack control over the dispersion, orientation, and depth of nanostructures within the cured layer, leading to unpredictable protrusion and inability to utilize the enhanced properties of nanostructures in applications requiring specific configurations and patterns.

Innovation Solution

A method involving the use of a fluid layer with controlled thickness to anchor nanostructures at a desired depth, allowing for precise placement and patterning of nanostructures within an anchoring layer, using techniques such as spin-coating and altering the fluid layer to form an anchoring layer that secures the nanostructures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If nanostructures are dispersed within curable materials to form composites, then mechanical properties such as elastic modulus and toughness are augmented, but control over nanotube placement and depth within the cured layer is lost

Engineering Contradiction:
Improvemechanical properties (elastic modulus and toughness)VSAvoidcontrol over nanotube placement and depth
Core Design Contradiction:
StrengthVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by first forming a support structure with predetermined nanotube arrangements before immersing it in the curable material. The support structure serves as a template that pre-establishes the desired nanotube placement, orientation, and depth control before the composite formation process begins. This allows the nanotubes to be positioned with precision prior to being embedded in the cured material.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The support structure acts as an intermediary between the nanotubes and the curable material. It provides a controlled environment for nanotube arrangement and serves as a temporary carrier that enables precise placement during the composite formation process. The support structure mediates the interaction between nanotubes and curable material, allowing controlled immersion while maintaining nanotube positioning integrity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If traditional composite formation methods are used, then nanostructures are immersed in curable materials, but unpredictable dispersal and protrusion from material surfaces occur

Engineering Contradiction:
Improvecomposite formation processVSAvoidnanotube dispersal control and protrusion predictability
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The support structure is prepared in advance with nanotubes arranged in predetermined patterns and orientations before the composite formation process. This preliminary arrangement ensures that when the support structure is immersed in the curable material, the nanotubes are already positioned at desired depths and orientations, eliminating unpredictable dispersal and protrusion.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent controls the immersion depth parameter by matching the support structure thickness to the desired nanotube embedding depth. By carefully selecting and controlling the support structure thickness parameter, the process achieves predictable nanotube placement within the cured layer, with controlled protrusion or complete embedding as required.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If nanostructures are used in everyday environments, then applications become more viable, but environmental hazards such as airborne particles, fluids, and impacts damage the nanostructures

Engineering Contradiction:
Improveapplication viability in everyday environmentsVSAvoidenvironmental hazards (airborne particles, fluids, impacts)
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent creates a composite material system where nanostructures are embedded within a cured matrix material that provides environmental protection. The composite structure combines the functional properties of the nanostructures with the protective properties of the cured material, shielding the nanostructures from harmful environmental factors while maintaining their functionality for practical applications.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The cured material acts as a protective cushion or shield around the nanostructures before they are exposed to environmental hazards. This beforehand protection prevents direct exposure to damaging factors such as airborne particles, fluids, and impacts, allowing the nanostructure-based devices to function reliably in everyday environments.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 controllable immersion and patterning of nanostructures, enhancing mechanical strength, temperature resistance, and preserving pre-fabricated patterns, allowing for the use of nanostructures in environments previously unsuitable due to environmental hazards.

Implementation Method 1

The curable material is applied as a fluid layer and then altered to form an anchoring layer within which the plurality of nanoscale structures are anchored

Methodology Applied
Scientific EffectCuring: Photopolymerisation

Data Source

PatentEP2081869B1Method for selectively anchoring large numbers of nanoscale structures
Publication Date: 2020.11.04 CALIFORNIA INST OF TECH
  • EP2081869B1 patent drawingFigure 1A~1B
  • EP2081869B1 patent drawingFigure 2
  • EP2081869B1 patent drawingFigure 3A~3C

AI summary

A method is provided for creating composites by combining pre-fabricated nanoscale structures (nanostructures) and other materials in which the nanostructures are anchored. This method results in anchored nanostructures with their base held and encased within the anchoring material to a specified depth and with a specified length of protrusion of the nanostructures from the anchoring material. This represents a major advance over previous methods of creating composites containing nanostructures which were limited to fully embedded nanostructures or, at best, very limited and uncontrolled protrusion of nanostructures. In summary, the current method involves bringing nanostructures and anchoring materials into physical contact in a controlled fashion and optionally conducting a treatment step to complete the anchoring process.