Gold nanoparticle-doped biocompatible silk films as a path to implantable thermo-electrically wireless powering devices

In this paper, we report on gold nanoparticle (GNP) doped silk films as an implantable and degradable heating element activated by light, which can be potentially used for wireless powering of implanted microdevices. Proof-of-concept experiments have been conducted by casting a GNP doped silk film on a miniature thermal-power chip, which generates ∼ 20 mW when illuminated by a green laser with an output power of 450 mW / mm 2 at 532 nm.