A Novel Device for Micro-Droplets Generation Based on the Stepwise Membrane Emulsification Principle
Abstract
:1. Introduction
2. Materials and Methods
2.1. Design
2.2. Fabrication
2.2.1. Chromium Sputtering
2.2.2. SU-8 Spin Coating (1 μm)
2.2.3. Mark Alignment
2.2.4. Exposure
2.2.5. Post-Exposure Bake (PEB)
2.2.6. Development
2.2.7. Oxygen Descum Plasma Cleaning
2.2.8. Chromium Etching
2.2.9. SU-8 Spin Coating (20 μm)
2.2.10. Mark Alignment
2.2.11. Exposure
2.2.12. Post-Exposure Bake (PEB)
2.2.13. Development
2.2.14. Glued to an Acrylonitrile Butadiene Styrene (ABS) Tube
2.2.15. Substrate and Chromium Removing
2.3. Experiment
3. Results with Discussion
4. Conclusions and Future Work
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Nomenclatures
SPG | Shirasu Porous Glass |
t1 | thickness of the bottom layer |
t2 | thickness of the upper layer |
wpi | size of the square pore for the upper layer |
wpo | size of the square pore for the bottom layer |
rpm | revolutions per minute |
s | second |
min | minute |
h | hour |
PEB | post-exposure bake |
PGMEA | propylene glycol methyl ether acetate |
IPA | isopropyl alcohol |
nitrogen | |
DI | distilled water |
ABS | acrylonitrile butadiene styrene |
HF | hydrofluoric |
minimum pressure that ensures the dispersed phase can be pressed through the porous membrane | |
interfacial tension between the continuous and dispersed phases | |
the contact angle between the dispersed phase and the membrane surface in the continuous phase | |
pore diameter |
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Lei, L.; Achenbach, S.; Wells, G.; Zhang, H.; Zhang, W. A Novel Device for Micro-Droplets Generation Based on the Stepwise Membrane Emulsification Principle. Micromachines 2024, 15, 1118. https://doi.org/10.3390/mi15091118
Lei L, Achenbach S, Wells G, Zhang H, Zhang W. A Novel Device for Micro-Droplets Generation Based on the Stepwise Membrane Emulsification Principle. Micromachines. 2024; 15(9):1118. https://doi.org/10.3390/mi15091118
Chicago/Turabian StyleLei, Lei, Sven Achenbach, Garth Wells, Hongbo Zhang, and Wenjun Zhang. 2024. "A Novel Device for Micro-Droplets Generation Based on the Stepwise Membrane Emulsification Principle" Micromachines 15, no. 9: 1118. https://doi.org/10.3390/mi15091118