| 초록 |
We reported a wearable strain sensor, made of a water-soluble metal electrode and a pH-dependent encapsulation layer, with conforming flexibility and wear-resistance. It is enabled by the polysilsesquioxane-based co-citrate elastomer that dissolves in a well-controlled manner upon pH-sensitivity. Different from the general transient electronic devices, pH sensitive features of the encapsulation material give rise to exceptional operation reliability in daily life as well as selective disposability upon specific pH stimuli. In this study, the pH-sensitive dissolution behavior and mechanical properties of the elastomer are characterized by varying the content of the polysilsesquioxane crosslinker. Finally, we demonstrate an on-demand disposable strain sensor with elastomer that monitors fine movements of the human body and can be disposed of by laundering it. The concept of these electronics will be useful for cutting-edge electronic circuit board technology and healthcare devices. |
