Table 2 Foams

From: Balancing sensitivity and integration in capacitive pressure sensors for textile-based health monitoring

Structure Type (short description)

Materials

Sensitivity kPa−1 (Range, kPa)

Response, Recovery Time

Cyclic Stability

Hysteresis

Detection Limit (Pa)

Refs.

Air gap&porous (S&P)

PDMS, SWNT-film

1.5 (0–1 kPa), 0.14 (1–5 kPa), 0.005 (>5 kPa)

NP

1000

3%a

Low

51

Foam structure embedded into textile

Silicone-sugar granules, Knit-Conductive Fabric

0.0121 (0–100 kPa)

NP

NP

4.5%

<10 kPa

52

Highly ordered foam structure

PDMS, PEDOT: PSS, Cu

0.21 (0–2 kPa)

112 ms, 152 ms

3000

9.2%

NP

54

3D network electrode (3DNE)

Mxene, TPU, AgNWs, ITO/PET

10.2 (0–8.6 kPa) 3.65 (8.6–100 kPa)

41 ms, 39 ms

3000

5%a

0.17 Pa

43

  1. PDMS Polydimethylsiloxane, SWNT Single-Walled Carbon Nanotubes, PEDOT:PSS Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, Cu Copper, TPU Thermoplastic Polyurethane, AgNWs Silver Nanowires, ITO/PET Indium Tin Oxide coated on a PET substrate, NP Not Provided, S&P structure used for both strain and pressure sensing.
  2. aEstimated from published data, not explicitly stated in the original study.
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