Micro-Structures Produced by Crystal Growth from Located Nuclei and Their Transfer Aiming at Functional Surfaces
Abstract
:1. Introduction
2. Proposed Procedures
3. Verification
3.1. ZnO Urchin-Like Structures Aiming at Gas Sensors
3.2. Vertically Aligned TiO2 Nanorods for Superhydrophilicity
3.3. Material Transfer
3.3.1. Transfer of the Assembled Particles
3.3.2. Transfer of Nanorods
4. Discussion
5. Conclusions
- Zinc oxide (ZnO) urchin-like structures were successfully produced from ZnO particles located as nuclei, and their gas-sensor functionalities were demonstrated.
- Titanium dioxide (TiO2)-aligned nanorods were produced on a fluorine-doped tin oxide (FTO) substrate, and their functionalities were examined. Then, the rods were transferred using an ultraviolet light curing resin layer.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Substrate, nuclei | Silicon wafer covered with polydimethylpolysiloxane (PDMS), ZnO particles (ϕ 100 nm) |
Hydrothermal synthesis | Zn(NO3)2 0.58 g, C6H12N4 0.29 g, water 20 mL, 90 °C, 9 h |
Substrate (nuclei) | Fluorine-doped tin oxide (FTO) |
Hydrothermal synthesis | H2O 30 mL, HCl 60 mL, TiCl4 1 mL, 150 °C, 2–12 h |
Ultrasonic cleaning | Ethanol 5 min, Water 5 min |
Piranha process | H2SO4:H2O2 = 3:1, 80 °C, 2 h |
Rinse with pure water | 10 min |
Condition ID | Array Spacing | Resin | |
---|---|---|---|
Affinity | Viscosity (mm2/s) | ||
(1) | Sparse | Organic (PAK-02) | 8.6 |
(2) | Dense | Organic (PAK-02) | 8.6 |
(3) | Sparse | Inorganic (PAK-01) | 56 |
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Moronuki, N.; Serizawa, R. Micro-Structures Produced by Crystal Growth from Located Nuclei and Their Transfer Aiming at Functional Surfaces. J. Manuf. Mater. Process. 2020, 4, 105. https://doi.org/10.3390/jmmp4040105
Moronuki N, Serizawa R. Micro-Structures Produced by Crystal Growth from Located Nuclei and Their Transfer Aiming at Functional Surfaces. Journal of Manufacturing and Materials Processing. 2020; 4(4):105. https://doi.org/10.3390/jmmp4040105
Chicago/Turabian StyleMoronuki, Nobuyuki, and Renato Serizawa. 2020. "Micro-Structures Produced by Crystal Growth from Located Nuclei and Their Transfer Aiming at Functional Surfaces" Journal of Manufacturing and Materials Processing 4, no. 4: 105. https://doi.org/10.3390/jmmp4040105