| 초록 |
There are many smart wearable devices for healthcare applications. Soft contact lens is especially noticeable for healthcare applications because it has an efficient interface between a human eye and the electronic device. However, many smart contact lenses remotely powered with inductive coupling-based technique. Wireless power transfer with inductive coupling cannot transfer high energy but also has significant efficiency loss at long distance. Moreover, continuously incident electromagnetic radiation can potentially be hazardous for eyes. Therefore, we here developed flexible, bio-compatible fuel cell for smart soft contact lenses using glucose in human tears. With the prototype of glucose fuel cell imbedded in hydrogel contact lenses, we obtained the power density of 5 uW/cm2 using a physiological level of glucose concentration in tear. |
