Stretchable Encapsulation for Implantable Strain Sensors

/day, offering one of the best combinations of barrier properties and stretchability among different encapsulation materials. In addition, the uniaxially microwrinkled encapsulation results in a more than doubled gauge factor for capacitive strain sensing by suppressing the Poisson effect. Thermally accelerated dynamic testing of encapsulated strain sensors validates their long-term stability. Additionally, strain sensing using encapsulated sensors sutured on a bladder phantom and ex vivo porcine bladders demonstrates their potential for real-time organ deformation sensing. The versatility of this encapsulation method makes it promising for a wide variety of stretchable implantable devices, supporting continuous organ monitoring and targeted therapy.