Polydopamine-functionalized cellulose nanofibrils with Ag deposition for robust poly(vinyl alcohol) hydrogel strain sensor

Key Points

• The hydrogel exhibited robust strain sensing properties due to polydopamine-functionalized cellulose nanofibrils and silver particles.
• Maximum sensor sensitivity reached 3.9 in experiments assessing strain response under varying conditions.
• This study employed a combination of functionalization techniques with polydopamine and silver to create composite materials for sensors.
• These findings suggest a promising approach for developing advanced strain sensors, potentially benefiting numerous applications.