ETCHs	Environmentally tolerant conductive hydrogels
SBMA	3-[Dimethyl-[2-(2-methylprop-2-enoyloxy) ethyl]azaniumyl]propane-1-sulfonate
HEMA	2-hydroxyethyl methacrylate
PVA	Polyvinyl alcohol
AA	Acrylic acid
PAM	Polyacrylamide
CS	Chitosan
CGO	Chitosan-modified graphene oxide
CNC	Cellulose nanocrystal
GA	Arabic gum
ECH	Epichlorohydrin
SA	Sodium alginate
CNF	Cellulose nanofibers
DMSO	Dimethyl sulfoxide
TA	Tannic acid
EG	Ethylene glycol
SNF	Silk nanofibers
CN	Carbon nitride nanosheets
PDDA	Poly(diallyldimethylammonium chloride)
PA	Phytic acid
LSNs	Lignin sulfonate nanorods
MMT	Montmorillonite
G	Graphene
HEA	2-hydroxyethyl acrylate
Th	Trehalose
SDS	Sodium dodecylsulfate
C18	Stearylmethacrylate
BA	Butyl acrylate
DMA	N, N-dimethylacrylamide
AFP	Antifreeze proteins
AMY	Amylopectin
CMC	Carboxymethyl cellulose
VHB	acrylic elastomer
MEA	Ethylene glycol methyl ether acrylate
Gp	β-Glycerophosphate sodium
CTAB	Cetyltrimethylammonium bromide
VBIBr	1-butyl-3-vinylimidazolium bromide
[BMIm]TFSI	bis(trifluoromethanesulfonyl) imide
PEG	Poly(ethylene glycol)
AL	Alkali lignin
ILs	1-vinyl-3-butylimidazolium
MaPVA	Methacrylated polyvinyl alcohol
CMCS	Carboxymethyl chitosan
VBIPS	3-(1-(4-vinylbenzyl)-1H-benzo-[d]imidazole-3-ium-3-yl) propane-1-sulfonate
MOF	Metal–organic framework
NIR	Near infrared
ECG	Electrocardiogram signal
EEG	Electroencephalogram signal
EMG	Electromyogram signal
DMAPS	[2-(Methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)
DMAA	N,N-dimethylacrylamide
FFT	Fourier transform