Table 3.

Comparison of flexible sensors using different methods of contact.

Classification	Material	Preparation Method	KPa Linearity Range KPa	KPa−1 Sensitivity KPa−1	Cycling Stability (Times)	Reference
Contact Flexible sensors	PEN, PVDF-TrFE	Chemical Vapor Deposition	40–200	0.15	200	[126]
	AGNW, PVP, PET	Sandpaper forming	0–4	0.0328	-	[127]
	PDMS, CIP, PEGDA	Spin coating	0–2	0.301	5000	[128]
Non-contact Flexible sensors	PEDOT, PSS, EG, OTS, PDMS	Spray coating	1–5	0.1	2000	[129]
	PPG, TDI, copper powder	Ultrasonication	1.3–38.2	-	500	[130]
	PVP, TEMPO, AgNW	Wet Spinning	0–460	5.49	1200	[131]
	SiO2, Si wafer, SigmaAldrich	Photolithography	0.72–11.6	-	5000	[132]