RT Journal Article
SR Electronic
T1 Soft, smart contact lenses with integrations of wireless circuits, glucose sensors, and displays
JF Science Advances
JO Sci Adv
FD American Association for the Advancement of Science
SP eaap9841
DO 10.1126/sciadv.aap9841
VO 4
IS 1
A1 Park, Jihun
A1 Kim, Joohee
A1 Kim, So-Yun
A1 Cheong, Woon Hyung
A1 Jang, Jiuk
A1 Park, Young-Geun
A1 Na, Kyungmin
A1 Kim, Yun-Tae
A1 Heo, Jun Hyuk
A1 Lee, Chang Young
A1 Lee, Jung Heon
A1 Bien, Franklin
A1 Park, Jang-Ung
YR 2018
UL http://advances.sciencemag.org/content/4/1/eaap9841.abstract
AB Recent advances in wearable electronics combined with wireless communications are essential to the realization of medical applications through health monitoring technologies. For example, a smart contact lens, which is capable of monitoring the physiological information of the eye and tear fluid, could provide real-time, noninvasive medical diagnostics. However, previous reports concerning the smart contact lens have indicated that opaque and brittle components have been used to enable the operation of the electronic device, and this could block the user’s vision and potentially damage the eye. In addition, the use of expensive and bulky equipment to measure signals from the contact lens sensors could interfere with the user’s external activities. Thus, we report an unconventional approach for the fabrication of a soft, smart contact lens in which glucose sensors, wireless power transfer circuits, and display pixels to visualize sensing signals in real time are fully integrated using transparent and stretchable nanostructures. The integration of this display into the smart lens eliminates the need for additional, bulky measurement equipment. This soft, smart contact lens can be transparent, providing a clear view by matching the refractive indices of its locally patterned areas. The resulting soft, smart contact lens provides real-time, wireless operation, and there are in vivo tests to monitor the glucose concentration in tears (suitable for determining the fasting glucose level in the tears of diabetic patients) and, simultaneously, to provide sensing results through the contact lens display.