Nanowire Alignment via Electric Field Transfer
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Solution Overview
Problem
Current techniques for aligning and depositing nanostructures on large area substrates face scalability issues, limiting the production of high-quality nanostructure-enabled electronic devices.
Innovation Solution
A system and method involving an electrode pair to generate electric fields for aligning and depositing nanowires onto surfaces using various forces such as electrostatic, vacuum, and gravitational forces, allowing for precise alignment and transfer of nanowires and electrical devices onto destination surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If current techniques are used to align and deposit nanowires, then alignment can be achieved on small substrates, but scalability to large area substrates is limited
Solution Approach 1:
The system divides the large substrate into multiple addressable regions, allowing selective deposition of nanowires in different areas. The electrode pair can be positioned and activated in different locations across the substrate, enabling scalable production while maintaining alignment quality in each local region.
Solution Approach 2:
The patent replaces mechanical alignment methods with electric field-based alignment. By using electric fields to manipulate nanowire positioning and deposition, the system achieves precise alignment control that scales to large substrates without the limitations of mechanical positioning systems.
2Manufacturing precision
If electric fields are used to align nanowires, then alignment precision is improved, but constraints on scalability to large area substrates increase
Solution Approach 1:
The electrode pair design enables multiple functions: alignment, deposition, and release of nanowires. The same electric field mechanism that provides precise alignment also controls the deposition process, eliminating the need for separate alignment and deposition systems and enabling scalability to large substrates.
Solution Approach 2:
The system transitions from two-dimensional planar electrode arrangements to three-dimensional electric field configurations. By utilizing vertical electric fields and multi-layer electrode structures, the system achieves precise alignment control that can be applied uniformly across large substrate areas, overcoming the scalability limitations of planar approaches.
3Manufacturing precision
If current deposition techniques are used, then deposition quality can be maintained, but scalability to large area substrates is poor
Solution Approach 1:
The nanowires are released from the transfer substrate through electrostatic repulsion or mechanical release mechanisms that do not require complex external intervention. This self-release capability enables high-speed deposition processes that can scale to large substrates while maintaining deposition quality, as the release mechanism operates uniformly across the entire substrate area.
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 scalable and high-quality deposition of nanostructures and electrical devices on large area substrates, facilitating the development of next-generation electronic devices.
Implementation Method 1
An electric field is generated by electrodes of the electrode pair to associate the nanowires with the electrodes
Implementation Method 2
The first electric charge applies a repulsive electrostatic force to the nanowires
Implementation Method 3
The first electric charge applies a repulsive electrostatic force to the nanowires
Implementation Method 4
An attractive electrostatic force of the second electric charge attracts the nanowires to the destination surface
Implementation Method 5
a vacuum is applied from the destination surface to the transfer surface to move the nanowires toward the destination surface
Implementation Method 6
Example forces include an electric field (AC and/or DC), a vacuum force, an electrostatic force, gravity, and/or other forces
Data Source
AI summary
Methods and systems for applying nanowires and electrical devices to surfaces are described. In a first aspect, at least one nanowire is provided proximate to an electrode pair. An electric field is generated by electrodes of the electrode pair to associate the at least one nanowire with the electrodes. The electrode pair is aligned with a region of the destination surface. The at least one nanowire is deposited from the electrode pair to the region. In another aspect, a plurality of electrical devices is provided proximate to an electrode pair. An electric field is generated by electrodes of the electrode pair to associate an electrical device of the plurality of electrical devices with the electrodes. The electrode pair is aligned with a region of the destination surface. The electrical device is deposited from the electrode pair to the region.