Table 5.
Properties of various graphene-based knitted strain sensors.
| Main Materials | Substrate | Fabrication Method |
GF | Sensing Range (%) | Stability (Cycle) |
Response Time (ms) | Application | Other Advantages |
References |
|---|---|---|---|---|---|---|---|---|---|
| RGO | Spandex/nylon knitted fabric | Dip-coating | ~18.5 (<40.6% strain) |
- | - | - | Monitor body movements | - | [94] |
| RGO | Weft-knit polyester fabric | Dip-coating | −1.7 (<15% strain, x-direction) −26 (<8% strain, y-direction) |
Up to 50 | 500 (7.5% strain, x-direction) 500 (5% strain, y-direction) | - | Detect the physiological activity of human body | - | [95] |
| RGO | Polyester knitted elastic band | Dip-coating | 34 (0–20% strain) 5 (20–50% strain) |
0.2–50 | >6000 (30% strain) |
- | Monitoring of large scale as well as small-scale human body motions | - | [96] |
| RGO | Nylon/ polyurethane fabric |
Dip-coating | 18.5 (0–10% strain) 12.1 (10–18% strain) |
0–33 | 120 (3% strain) |
- | Monitor human motions | Washability (resistance increased from ~112 kΩ/m2 to ~154 kΩ/m2 after 8 washing cycles) | [97] |
| RGO | Wool-knitted fabric | Pad-dyeing | 0.9 (20% strain, x-direction) 3 (20% strain, y-direction) |
Up to 40 | 500 (20% strain, y-direction) |
- | Detect human respiration movements and large motions | Seamlessly integrate with other fabric materials | [84] |