“…1,4 However, few systematic studies have been conducted to understand these correlations. Furthermore, the power requirements of micro-scale devices are diverse; 3,46 for example, pacemakers need only 1 microwatt of power, 47 radio frequency identification tags require 1 to 100 mW s, 48 implantable neural stimulator chips need hundreds of microwatts, 49,50 and sensors for blood glucose monitoring 51 and cortical implant systems 52 require several milliwatts. Thus, it is always desirable to tailor the structure of all-carbon fibers so that micro-SCs of varied energy storage capabilities can be created.…”