“…The design of flexible mechanical force sensor usually relies on a strategically designed flexible structure integrated with advanced functional materials [ 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 ]. To improve the biological compatibility of the device with human body, numerous biomaterials are developed for the application of a wide range of medical fields covering orthopedics, drug administration, dentistry, skin tissue engineering, and cardiovascular systems [ 104 , 105 , 106 ].…”