Deformable Imprint Template for Nanoimprint Detachment
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Solution Overview
Problem
In nanoimprint technology, the detachment process often results in the imprint adhesive being peeled off or the imprinted pattern being distorted due to the complexity of the imprint template, leading to poor fidelity of the nanoimprint process.
Innovation Solution
An imprint template with a deformable layer having a variable thickness under external stimulation, specifically an equidistant expanded shape matching the imprinting pattern layer, is used. This deformable layer, comprising layers such as electrodes and an electrolyte layer, increases in thickness under an electric field and returns to its initial state when the stimulus is removed, facilitating smooth detachment without damaging the adhesive structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a complex imprint template structure is used, then the imprinting capability is improved, but the detachment quality deteriorates causing peeling and distortion
Solution Approach 1:
The patent introduces a deformable layer that can dynamically change its thickness under external stimulation (electrical, thermal, or mechanical). During imprinting, the deformable layer is stimulated to increase in thickness, providing a release mechanism that prevents adhesive bonding between the template and imprint adhesive. This dynamic adjustment resolves the contradiction by enabling both high-fidelity imprinting and clean detachment.
Solution Approach 2:
The patent changes the physical parameter of the template structure by introducing a deformable layer whose thickness can be modulated. By controlling the thickness variation of this layer through external stimuli, the system achieves both precise pattern transfer and stress-free detachment, resolving the fidelity-detachment quality contradiction.
2Reliability
If the imprint template structure is simplified, then the detachment process is improved, but the imprint pattern fidelity deteriorates
Solution Approach 1:
The patent segments the template structure into distinct functional layers: a rigid support substrate providing structural integrity for high-fidelity imprinting, and a separate deformable layer providing detachment functionality. This segmentation allows each layer to optimize its specific function without compromising the other.
Solution Approach 2:
The deformable layer acts as an intermediary between the rigid support substrate and the imprint adhesive. It mediates the detachment process by providing a controlled release mechanism that prevents direct adhesive bonding to the complex template structure, ensuring both fidelity and smooth detachment.
3Reliability
If a deformable layer with variable thickness is added, then the detachment quality is improved, but the device complexity increases
Solution Approach 1:
The patent employs a thin deformable layer that can be made from flexible materials such as polymers or other suitably compliant substances. This thin-film approach provides the necessary detachment functionality while minimizing the addition of complexity to the overall template structure.
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 solution effectively prevents peeling and distortion of the imprinted pattern, thereby improving the fidelity of the nanoimprint process by ensuring balanced shearing forces during detachment and maintaining the integrity of the pattern on the adhesive.
Implementation Method 1
the first electrode layer and the second electrode layer are configured to form an electric field when the first electrode layer and the second electrode layer are applied with different voltages, and the thickness of the deformable layer is increased under an action of the electric field
Implementation Method 2
the intermediate layer comprises an electrolyte layer configured to respectively drive anions and cations contained in the electrolyte layer to respectively move towards the two electrode layers under the action of the electric field
Implementation Method 3
the first electrode layer and/or the second electrode layer are/is an ion-embedded layer that may be embedded with ions so as to increase its own thickness
Implementation Method 4
the electromorphic layer is configured to undergo an expansion deformation in a thickness direction under the action of the electric field
Data Source
AI summary
An imprint template and an imprint method are provided. The imprint template includes a base substrate, an imprinting pattern layer and a deformable layer; wherein the deformable layer is disposed on a surface of the imprinting pattern layer facing away from the base substrate, and a shape of a surface of the deformable layer facing away from the base substrate is identical to an equidistant expanded shape of a shape of a surface of the imprinting pattern layer facing away from the base substrate; the deformable layer is configured to have a variable thickness under an external stimulation.