Nanocoining Die for Fast Nanostructure Imprinting
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Solution Overview
Problem
Current methods for producing nanostructured surfaces with nanometer scale features are limited by long manufacturing times, making them inefficient for large-scale production.
Innovation Solution
The nanocoining process uses a micro-scale diamond die with nanostructured features attached to a high-speed actuator to rapidly imprint nanometer scale features onto a workpiece, employing an elliptical tool-path and precise alignment to minimize smear and ensure high-quality feature transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If lithography methods are used to produce nanostructured surfaces, then high quality features can be achieved, but manufacturing time becomes excessively long
Solution Approach 1:
The patent uses a stamp or mold with pre-formed nanometer scale features that is pressed onto the substrate to transfer the pattern. This copying approach eliminates the need for sequential lithography steps (spin coating, baking, etching) and achieves high-quality features in a single rapid imprinting operation, directly resolving the contradiction between feature quality and manufacturing time
Solution Approach 2:
The nanometer scale features are pre-formed on the stamp or mold before the imprinting process. This preliminary preparation allows the actual patterning to be done by simple contact and pressure, dramatically reducing the time required compared to performing all feature creation steps during substrate processing
2Manufacturing precision
If conventional imprinting methods are used, then nanometer scale features can be produced, but production speed is too slow for large-scale manufacturing
Solution Approach 1:
The patent applies ultrasonic vibration to the stamp or mold during the imprinting process. This vibration facilitates rapid material flow and feature formation, enabling high-speed production while maintaining nanometer scale feature fidelity. The vibrational energy helps the coating material flow into the stamp features more quickly and completely, resolving the contradiction between precision and speed
3Manufacturing precision
If multi-step lithography processes are employed, then precise nanometer features can be created, but process complexity increases significantly
Solution Approach 1:
The patent transfers the pre-formed pattern from the stamp/mold directly to the substrate in a single step. This eliminates the complex multi-step lithography process (spin coating, baking, etching, repeating multiple times) while maintaining precise nanometer feature creation, directly addressing the contradiction between precision and process complexity
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 process enables the fast and efficient production of large areas with high-fidelity nanometer scale features, reducing production time and improving the throughput of nanostructured coatings for applications like anti-reflective and superhydrophobic surfaces.
Implementation Method 1
a first actuator moves the die with respect to the workpiece such that the at least one nanometer scale feature impacts the workpiece and imprints a corresponding at least one nanometer scale feature in the workpiece
Data Source
AI summary
The subject matter described herein relates to methods and systems for fast imprinting of nanometer scale features in a workpiece. According to one aspect, a system for producing nanometer scale features in a workpiece is disclosed. The system includes a die having a surface with at least one nanometer scale feature located thereon. A first actuator moves the die with respect to the workpiece such that the at least one nanometer scale feature impacts the workpiece and imprints a corresponding at least one nanometer scale feature in the workpiece.