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High-Rate Printing of Micro/Nanoscale Patterns Using Interfacial Convective Assembly
Zhimin Chai1, Adnan Korkmaz1, Cihan Yilmaz1
1NSF Nanoscale Science and Engineering Center for High-Rate Nanomanufacturing (CHN), Northeastern University, Boston, MA, 02115, USA.
Advanced Materials (Deerfield Beach, Fla.)
|April 24, 2020
Summary
A new printing method, interfacial convective assembly, achieves high-resolution nanoparticle patterns rapidly. This technique offers a faster, more precise way to create advanced nanoelectronics and sensors.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Science
Background:
- Printing electronics is crucial for advanced devices.
- Existing techniques lack the required micro/sub-microscale resolution.
- Need for high-throughput, high-resolution printing methods.
Purpose of the Study:
- Introduce interfacial convective assembly (ICA) for high-resolution printing.
- Investigate ICA's parameter influence on nanoparticle assembly.
- Demonstrate ICA's potential for nanoelectronics and sensors.
Main Methods:
- Utilized substrate-heating-induced solutal Marangoni convective flow for particle manipulation.
- Employed van der Waals interactions and geometrical confinement for particle trapping.
- Systematically varied solvent type, substrate temperature, particle concentration, and assembly time.
Main Results:
- Achieved high-resolution nanoparticle assembly down to 25 nm.
- Demonstrated rapid assembly in minutes, significantly faster than conventional methods.
- Fabricated single-crystal silver nanorods with low resistivity (8.58 × 10-5 Ω cm).
- Observed coalescence of nanoparticles <5 nm into sintered structures.
Conclusions:
- ICA is a versatile, high-resolution, high-throughput printing technique.
- ICA enables the fabrication of next-generation nanoelectronics and sensors.
- Potential for precise nanoparticle arrangement and device fabrication.
