Critical Salt Loading in Flexible Poly(vinyl alcohol) Sensors Fabricated by an Inkjet Printing and Plasma Reduction Method
Abstract
:1. Introduction
2. Materials and Methods
2.1. Solvent Casting of Poly(Vinyl Alcohol) Films and Their Derivatives
2.2. Mechanical Testing of Cast PVA Films
2.3. Experimental Test Methods
2.3.1. Drop Casting
2.3.2. Inkjet Printing
2.3.3. Plasma Treatment
3. Results
3.1. Silver Nitrate Staining of PVA Film
3.2. Inkjet Printing and Plasma Treatment
3.3. Mechanical and Electrical Properties
4. Discussion
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Sample | Thickness (mm) | Width (mm) | Length (mm) |
---|---|---|---|
2 (dry: <15% RH) | 0.11 | 3.10 | 7.62 |
4 (humid: 50% RH) | 0.11 | 3.53 | 7.62 |
6 (soaked + 50% RH) | 0.99 | 4.83 | 18.0 |
Composition | Resistance (kΩ) |
---|---|
Stock PVA | 3.64 |
15-1 | 7.00 |
15-3 | 0.015 |
15-8 | 0.020 |
Sample | SRL (Ω/□) | SRW (Ω/□) | SRD (Ω/□) |
---|---|---|---|
Prestretched PVA | 0.4406 | 0.5126 | 0.7512 |
Unstretched PVA | 0.2635 | ||
Prestretched PVA-Mg | 0.2746 | 0.2170 | 0.2475 |
Unstretched PVA-Mg | 0.2024 | 0.2139 | 0.2073 |
Literature References | SR (Ω/□) |
---|---|
Inkjet graphene biosensor [25] | 110 |
Silver on PET [26] | 0.95 (light anneal), 2.03 (thermal anneal) |
Resistance at 0% Strain (Ω) | Resistance at 6% Strain (Ω) | |
---|---|---|
Cycle 1 | 7.0 | 8.9 |
Cycle 2 | 8.3 | 8.9 |
Cycle 3 | 8.3 | 8.9 |
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Chou, E.; Sui, Y.; Chong, H.; Brancel, C.; Lewandowski, J.J.; Zorman, C.A.; Wnek, G.E. Critical Salt Loading in Flexible Poly(vinyl alcohol) Sensors Fabricated by an Inkjet Printing and Plasma Reduction Method. Micromachines 2022, 13, 1437. https://doi.org/10.3390/mi13091437
Chou E, Sui Y, Chong H, Brancel C, Lewandowski JJ, Zorman CA, Wnek GE. Critical Salt Loading in Flexible Poly(vinyl alcohol) Sensors Fabricated by an Inkjet Printing and Plasma Reduction Method. Micromachines. 2022; 13(9):1437. https://doi.org/10.3390/mi13091437
Chicago/Turabian StyleChou, Evan, Yongkun Sui, Hao Chong, Christina Brancel, John J. Lewandowski, Christian A. Zorman, and Gary E. Wnek. 2022. "Critical Salt Loading in Flexible Poly(vinyl alcohol) Sensors Fabricated by an Inkjet Printing and Plasma Reduction Method" Micromachines 13, no. 9: 1437. https://doi.org/10.3390/mi13091437