INS14-1494
Subcutaneous power supply by NIR-II light
Topic
S14. The 2nd PSK / CCS-PD Joint Symposium on Frontiers in Polymer Science and Engineering
When and Where
Oct 1, 2026
15:15 - 15:40
Room 203
Session Chairs
Tae Ann KIM
Presenter(s)
Yapei Wang (School of Chemistry and Life Resources, Renmin University of China)
Co-Author(s)
Abstract
Implantable medical devices are wished to be recharged via contactless power transfer technologies without interventional operations. Superior to subcutaneous power supply by visible light or electromagnetic wave, second nearinfrared (NIR-II) light is predicted to possess 60 times subcutaneous power transmission but hard to be utilized. Here we report a photo-thermal-electric converter via the combination of photothermal conversion and thermoelectric conversion. It is able to generate an output power as high as 500 mW under the coverage of excised tissues, presenting advantages of non-invasion, high output power, negligible biological damage, and deep tissue penetration. As an in vivo demonstration, the implanted device successfully powered high-consumption implantable electronics, including a wireless endoscopic camera capable of real-time image transmission, and histological analyses confirmed excellent biocompatibility after implantation. These results demonstrate that NIR-II photo-thermal-electric conversion provides an effective approach for high-power wireless energy delivery and represents a promising solution for the next generation of implantable bioelectronic devices.
