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High-Resolution Self-Assembly of Functional Materials and Microscale Devices via Selective Plasma Induced Surface
Luke J Tinsley1, Prakash Karipoth1, James H Chandler2
1Future Manufacturing Processes Research Group, School of Mechanical Engineering, University of Leeds, LS2 9JT, United Kingdom.
Small (Weinheim an Der Bergstrasse, Germany)
|February 12, 2025
Summary
A novel two-step, computer-controlled self-assembly technique enables rapid, high-resolution fabrication of heterogeneous functional materials. This method offers a scalable, cost-effective alternative to traditional micro/meso-fabrication for next-generation devices.
Area of Science:
- Materials Science
- Microfabrication
- Surface Chemistry
Background:
- Current fabrication methods struggle with efficient, high-resolution self-assembly of diverse functional materials.
- Direct material manipulation methods face limitations in resolution, material choice, speed, and cost.
Purpose of the Study:
- To develop a computer-controlled, two-step self-assembly technique for creating heterogeneous material patterns.
- To achieve high resolution and throughput in fabricating micro/meso-scale devices.
Main Methods:
- Localized chemical functionalization of polydimethylsiloxane substrates using a micro plasma jet to program surface energy.
- Self-assembly of polar fluids containing functional materials onto programmed regions in seconds.
Main Results:
- Demonstrated fabrication of centimeter-scale heterogeneous patterns with features as small as 12.5 µm.
- Successfully produced patterns with diverse conductive, magnetic, and mechanical properties, including magneto-mechanical films and flexible electronics.
- Achieved unprecedented processing times and cost-effectiveness for high-resolution patterns.
Conclusions:
- The presented self-assembly approach offers a disruptive alternative to lithography and direct write methods.
- This technique enables scalable, environmentally friendly manufacturing for advanced devices across various fields.
- Facilitates the creation of next-generation devices through flexible and industrially viable fabrication.
