ArticleMaterials (Basel, Switzerland)2021
The Effect of Encapsulation on Crack-Based Wrinkled Thin Film Soft Strain Sensors.
Article in Materials (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- VOC biomarker-based wearable gas sensors for real-timeFrontiers in plant science · 2026Review
- Review
- Wearable sensor supports in-situ and continuous monitoring of plant health in precision agriculture era.Plant biotechnology journal · 2024Review
- New horizons in smart plant sensors: key technologies, applications, and prospects.Frontiers in plant science · 2024Review
- A Review of Epidermal Flexible Pressure Sensing Arrays.Biosensors · 2023Review
- E-Skin: The Dawn of a New Era of On-Body Monitoring Systems.Micromachines · 2021Review
- Soft Inductive Coil Spring Strain Sensor Integrated with SMA Spring Bundle Actuator.Sensors (Basel, Switzerland) · 2021Article
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Practical wearable applications of soft strain sensors require sensors capable of not only detecting subtle physiological signals, but also of withstanding large scale deformation from body movement. Encapsulation is one technique to protect sensors from both environmental and mechanical stressors. We introduced an encapsulation layer to crack-based wrinkled metallic thin film soft strain sensors as an avenue to improve sensor stretchability, linear response, and robustness. We demonstrate that encapsulated sensors have increased mechanical robustness and stability, displaying a significantly larger linear dynamic range (~50%) and increased stretchability (260% elongation). Furthermore, we discovered that these sensors have post-fracture signal recovery. They maintained conductivity to the 50% strain with stable signal and demonstrated increased sensitivity. We studied the crack formation behind this phenomenon and found encapsulation to lead to higher crack density as the source for greater stretchability. As crack formation plays an important role in subsequent electrical resistance, understanding the crack evolution in our sensors will help us better address the trade-off between high stretchability and high sensitivity.
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Registered trials
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