College of Life Science and Biotechnology;
DalianUniversity;
Dalian 116622;
China;
State Key Laboratory of Biochemical Engineering;
Instituteof Process Engineering;
Chinese Academy of Sciences;
Beijing 100190;
China;
College of Environmental and Chemical Engineering;
DalianUniversity;
Dalian 116622;
China;
Conductivity; Transparency; Peptide hydrogel; Polypyrrole-polydopamine nanoparticles; Wearable biosensor;