A Self-Powered Optogenetic System for Implantable Blood Glucose Control
The performance of the i-PENG in vivo. (a) Fluorescence images () and (b) cell viability of stained fibroblasts after being cultured with encapsulation film from the i-PENG for 1, 2, and 3 days. (c) Schematic diagram of the i-PENG that converts the biomechanical energy from respiration into electricity for directly powering the LED. The blinking frequency of the LED is the same as the breathing rate of a SD rat. (d) Electrical output of the i-PENG in vivo. The and of i-PENG in the SD rat were measured under anesthesia. (e) Photographs of the i-PENG-based SOS in vivo and controlled by a magnet ().