caa a22 4500 605479844 CHVBK 20210128100412.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10544-015-9979-0 doi (NATIONALLICENCE)springer-10.1007/s10544-015-9979-0 Eyeglasses-powered, contact lens-like platform with high power transfer efficiency [Elektronische Daten] [Young-Joon Kim, Jimin Maeng, Pedro Irazoqui] We present a contact lens-like platform that is wirelessly powered by an external coil embedded in eyeglasses via magnetic resonance coupling at 13.56MHz. The platform is composed of a transparent parylene film as a host substrate, an embedded spiral inductor as a power receiving coil, and metal interconnects for additional electronics. A multilayer thin-film parylene packaging process is used to meet the form factor of a contact lens. A 36μm-thick metal plating technique is employed on a parylene film to enhance the quality factor (Q) of the receiving coil (Q = 27.3 at 13.56MHz). The power transfer method and techniques to compensate for coil misalignment are demonstrated on a pig eye, achieving a power transfer efficiency of 17.5% at a 20-mm powering distance. The effect of tissue on the coil and the power transfer efficiency is examined. The high power transfer efficiency along with the wearable prototype demonstrated herein make promising progress toward smart contact lens in ocular diagnostics. Springer Science+Business Media New York, 2015 Contact lens nationallicence Magnetic resonance coupling nationallicence Ocular implants nationallicence Power transfer efficiency nationallicence Wearable nationallicence Wireless power transfer nationallicence Kim Young-Joon Center for Implantable Devices, School of Electrical and Computer Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Maeng Jimin Center for Implantable Devices, Weldon School of Biomedical Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Irazoqui Pedro Center for Implantable Devices, Weldon School of Biomedical Engineering, Purdue University, 47907, West Lafayette, IN, USA aut Biomedical Microdevices Springer US; http://www.springer-ny.com 17/4(2015-08-01), 1-9 1387-2176 17:4<1 2015 17 10544 https://doi.org/10.1007/s10544-015-9979-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10544-015-9979-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Young-Joon Center for Implantable Devices, School of Electrical and Computer Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Maeng Jimin Center for Implantable Devices, Weldon School of Biomedical Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 700 1- Irazoqui Pedro Center for Implantable Devices, Weldon School of Biomedical Engineering, Purdue University, 47907, West Lafayette, IN, USA aut NATIONALLICENCE 773 0- Biomedical Microdevices Springer US; http://www.springer-ny.com 17/4(2015-08-01), 1-9 1387-2176 17:4<1 2015 17 10544