Table 1.

Comparison of self-powered skin sensors for detecting body motion.

Mechanism	Material	Motion Detected	Output Power Density	Reference
TENG	Rubber and Al	Diaphragmatic breathing and joint movements	$76.27{\mathrm{W}\mathrm{m}}^{-2}$	[35]
TENG	Rubber and physiological saline	Swallowing, calf raising, jumping, squatting, breathing, bicep curling, and gait patterns		[49]
TENG	PDMS and Au nanosheets film	Bending and relaxation of joints		[50]
TENG	PEDOT:PSS coated textile and PTFE	Hand motion and finger bending	$2{\mathrm{W}\mathrm{m}}^{-2}$	[51]
TENG	Kapton and Cu	Motion of joints and muscles	$5{\mathrm{W}\mathrm{m}}^{-2}$	[52]
TENG	PTFE and Nylon	Respiration		[56]
PENG	ZnO	Eye ball motion		[36]
PENG	ZnO and PVDF	Joint bending		[53]
PENG	PZT	Joint posture	$3.93{\mathsf{\mu }\mathrm{W}\mathrm{cm}}^{-3}$	[60]
PENG	BN nanosheets	Movements	$106{\mathsf{\mu }\mathrm{W}\mathrm{cm}}^{-3}$	[63]