Strain-Modulated Flexible Bio-Organic/Graphene/PET Sensors Based on DNA-Curcumin Biopolymeropen access
- Authors
- Mallem, Siva Pratap Reddy; Puneetha, Peddathimula; Lee, Dong Yeon; An, Sung Jin
- Issue Date
- Jun-2024
- Publisher
- MDPI
- Keywords
- DNA; biopolymer; graphene; strain sensor; gauge factor
- Citation
- BIOMOLECULES, v.14, no.6
- Journal Title
- BIOMOLECULES
- Volume
- 14
- Number
- 6
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28809
- DOI
- 10.3390/biom14060698
- ISSN
- 2218-273X
- Abstract
- In recent years, there has been growing interest in the development of metal-free, environmentally friendly, and cost-effective biopolymer-based piezoelectric strain sensors (bio-PSSs) for flexible applications. In this study, we have developed a bio-PSS based on pure deoxyribonucleic acid (DNA) and curcumin materials in a thin-film form and studied its strain-induced current-voltage characteristics based on piezoelectric phenomena. The bio-PSS exhibited flexibility under varying compressive and tensile loads. Notably, the sensor achieved a strain gauge factor of 407 at an applied compressive strain of -0.027%, which is 8.67 times greater than that of traditional metal strain gauges. Furthermore, the flexible bio-PSS demonstrated a rapid response under a compressive strain of -0.08%. Our findings suggest that the proposed flexible bio-PSS holds significant promise as a motion sensor, addressing the demand for environmentally safe, wearable, and flexible strain sensor applications.
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