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Direct-Write Printing for Flexible and 3D Electronics: Aerosol Jet vs. Micro Dispensing
Ankur Gohel1, Mathieu Gratuze1, Mohsen Ketabi1
1Laboratoire de Communication et d'Intégration de la Micro-Électronique (LaCIME), Regroupement Stratégique en Micro Systèmes du Québec (ReSMIQ), École de Technologie Supérieure, 1100 Notre Dame Ouest, Montreal, QC H3C 1K3, Canada.
Micromachines
|August 28, 2025
Summary
Aerosol Jet Printing (AJP) offers high resolution, while Micro Dispensing Technology (MDT) provides superior 3D printing capabilities, material versatility, and throughput for flexible electronics manufacturing.
Area of Science:
- Materials Science
- Manufacturing Engineering
- Electrical Engineering
Background:
- Direct-write manufacturing technologies are crucial for fabricating advanced electronic devices.
- Aerosol Jet Printing (AJP) and Micro Dispensing Technology (MDT) are prominent methods for depositing functional inks.
- Understanding their comparative performance is essential for selecting optimal manufacturing processes.
Purpose of the Study:
- To conduct a comprehensive comparison of Aerosol Jet Printing (AJP) and Micro Dispensing Technology (MDT).
- To evaluate their capabilities, limitations, and performance on 2D and 3D substrates.
- To determine their suitability for flexible electronics applications based on ink morphology and electrical properties.
Main Methods:
- Direct-write manufacturing process comparison.
- Characterization of printed materials on 2D and 3D substrates.
- Analysis of ink morphology and electrical performance.
Main Results:
- Aerosol Jet Printing (AJP) demonstrates superior resolution.
- Micro Dispensing Technology (MDT) exhibits enhanced 3D conformality.
- MDT offers greater material versatility and higher throughput compared to AJP.
Conclusions:
- Both AJP and MDT have distinct advantages for direct-write manufacturing.
- AJP is ideal for applications requiring high resolution.
- MDT is better suited for complex 3D structures, diverse materials, and high-volume production in flexible electronics.

