Carbon Nanotube Array Surface Repair via Adhesive Tape Reorientation
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Solution Overview
Problem
Carbon nanotube arrays often become uneven and develop defects due to tilting, bending, or entanglement during manufacturing, storage, or transportation, necessitating a method to restore their perpendicular orientation and flatten the surface.
Innovation Solution
A method involving the use of an adhesive tape to reorient carbon nanotubes perpendicular to the substrate, where the bond force between the nanotubes and the substrate is stronger than the bond force between the nanotubes and the tape, allowing for the correction of inclined nanotubes and formation of a super-aligned carbon nanotube array.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carbon nanotube arrays are made, stored or transported, then the carbon nanotubes can be easily tilted, bent, or become entangled together, but the surface becomes uneven and defects increase
Solution Approach 1:
The patent applies preliminary action by pre-coating the substrate with a specific layer structure (buffer layer and adhesion layer) before carbon nanotube growth. This preparatory surface treatment ensures that during subsequent storage and transportation, the carbon nanotubes maintain their perpendicular orientation and resist tilting or bending, thereby preventing surface unevenness and defects without requiring post-processing repairs.
2Ease of operation
If adhesive tape is used to reorient carbon nanotubes, then the bond force between nanotubes and substrate is stronger than bond force between nanotubes and tape, but this allows correction of inclined nanotubes
Solution Approach 1:
The patent applies parameter changes by carefully controlling the bond force parameters through substrate surface treatment. The buffer layer and adhesion layer are designed to provide optimal bonding strength that allows adhesive tape to gently reorient inclined nanotubes without causing damage. This parameter optimization enables easy correction of nanotube orientation while maintaining structural integrity.
3Manufacturing precision
If the carbon nanotube array surface is flattened, then the performance is improved, but operations are simplified
Solution Approach 1:
The patent resolves this contradiction by performing preliminary surface preparation through buffer layer and adhesion layer coating before carbon nanotube growth. This advance treatment creates an optimal substrate surface that guides perpendicular nanotube growth and maintains surface flatness throughout the process, eliminating the need for complex post-growth flattening operations while achieving high manufacturing precision.
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 effectively flattens the surface of the carbon nanotube array, improving its performance, simplifying operations, reducing damage during storage and transportation, and facilitating the formation of a super-aligned structure with minimal inclined nanotubes.
Implementation Method 1
a bond force between the plurality of carbon nanotubes of the carbon nanotube array and the substrate is greater than a bond force between the plurality of carbon nanotubes of the carbon nanotube array and the adhesive tape
Data Source
AI summary
A method for repairing surface of carbon nanotube array is provided. A carbon nanotube array located on a substrate are provided. The carbon nanotube array comprises a plurality of carbon nanotubes, and at least part of the plurality of carbon nanotubes are aslant arranged on the surface of the substrate. An adhesive tape is placed on a surface of the carbon nanotube array away from the substrate. A bond force between the plurality of carbon nanotubes and the substrate is greater than a bond force between the plurality of carbon nanotubes and the adhesive tape. The adhesive tape is peeled off, and the at least part of the plurality of carbon nanotubes are pulled up vertically by a bond force of the adhesive tape.