This nano-ink emits fluorescence when exposed to glucose, which can be detected with near-infrared light. Corresponding to this is a sensor that can emit near-infrared light while sensing the fluorescence of nano-ink. The patient can read the blood sugar level in real time by wearing such a sensor similar to a wristwatch. Moreover, the biggest advantage of this nano-ink is that it is temporary and can disappear automatically every 6 months or so.
