“…[ 2 , 157 ] The most commonly‐applied triggers primarily include temperature, pH, light, metal ions, enzymes, and small molecules. [ 30 , 158 , 159 , 160 ] Recently, new stimuli, such as redox, [ 71 , 161 ] magnetic fields, [ 9 , 10 , 84 ] electric fields, [ 159 ] and near‐infrared radiation [ 162 ] are gradually being used to regulate the properties of hydrogels. [ 2 ] In smart DNA‐based hydrogels, these stimuli are provided by FNAs, small molecules, and polymers with unique features.…”