Cyclosiloxane Anti-Stick Layer for Nanoimprinting
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Solution Overview
Problem
Existing nanoimprinting technologies face challenges in automating the fabrication of working stamps due to surface energy mismatches, leading to low success rates and inability to support complex sequencing surface chemistry for genetic sequencing applications.
Innovation Solution
The use of a silicon master coated with an anti-stick layer containing a molecule with a cyclosiloxane and at least one silane functional group, which facilitates stable wetting of the working stamp formulation, enabling systematic and automated successful WS fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional anti-stick layers are used in nanoimprinting, then the working stamp fabrication process can be performed, but surface energy mismatches occur leading to poor wetting and low success rates
Solution Approach 1:
The invention changes the chemical composition and surface energy parameters of the anti-stick layer by using cyclosiloxane molecules with specific silane functional groups. This modifies the surface energy characteristics to achieve optimal wetting conditions for the working stamp formulation, thereby resolving the surface energy mismatch issue and improving fabrication success rates.
Solution Approach 2:
The cyclosiloxane-based anti-stick layer acts as an intermediary between the silicon master and the working stamp formulation. It mediates the interaction by providing appropriate surface energy characteristics that facilitate stable wetting, while maintaining the ability to release the working stamp cleanly after fabrication.
2Productivity
If manual working stamp fabrication methods are used, then some level of control is possible, but automation is not achieved and productivity is limited
Solution Approach 1:
The anti-stick layer is designed to enable self-aligned and self-contained fabrication processes. The stable wetting properties and controlled release characteristics allow the working stamp to be formed and released through automated processes without requiring complex manual alignment or intervention, thereby enabling full automation and high throughput production.
3Manufacturing precision
If existing anti-stick layers are used, then basic wetting can be achieved, but pattern fidelity and surface quality are insufficient for high-resolution imprinting
Solution Approach 1:
The invention optimizes the chemical parameters of the anti-stick layer using cyclosiloxane molecules with specific silane functional groups. This precise control over molecular structure and surface energy parameters enables achieving high pattern fidelity and low surface roughness while maintaining relatively simple fabrication processes through standard deposition and curing techniques.
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
This approach allows for high-quality imprinting with desirable pattern fidelity and low surface roughness, supporting the production of working stamps that can be used for genetic sequencing applications with improved scalability and efficiency.
Implementation Method 1
facilitates stable wetting of the working stamp formulation
Implementation Method 2
molecule having a cyclosiloxane with at least one silane functional group
Data Source
AI summary
An imprinting apparatus includes a silicon master having a plurality of nanofeatures defined therein. An anti-stick layer coats the silicon master, the anti-stick layer including a molecule having a cyclosiloxane with at least one silane functional group. A method includes forming a master template by: depositing a formulation on a silicon master including a plurality of nanofeatures defined therein, the formulation including a solvent and a molecule having a cyclosiloxane with at least one silane functional group; and curing the formulation, thereby forming an anti-stick layer on the silicon master, the anti-stick layer including the molecule. The method further includes depositing a silicon-based working stamp material on the anti-stick layer of the master template; curing the silicon-based working stamp material to form a working stamp including a negative replica of the plurality of nanofeatures; and releasing the working stamp from the master template.