Sunwoo, Sung-Hyuk Han, Sang Ihn Jung, Dongjun Kim, Minseong Nam, Seonghyeon Lee, Hyunjin Choi, Suji Kang, Hyejeong Cho, Ye Seul Yeom, Da-Hae Cha, Myung-Jin Lee, Seunghwan Lee, Seung-Pyo Hyeon, Taeghwan Kim, Dae-Hyeong 2024-01-19T09:34:25Z 2024-01-19T09:34:25Z 2023-05-04 2023-04 1936-0851 https://pubs.kist.re.kr/handle/201004/113823 Mechanically soft metallic nanocomposites have gained much attention as a key material for intrinsically stretchable biointegrated devices. However, it has been challenging to develop a stretchable conductive nanocomposite with all the desired material characteristics including high conductivity, high stretchability, low cytotoxicity, and low impedance. Here, we present a material strategy for the stretchable conductive nanocomposite, particularly emphasizing low impedance, by combining silver-gold-platinum core- shell-shell nanowires and homogeneously dispersed in situ synthesized platinum nanoparticles (Pt NPs). The highly embossed structure of the outermost Pt shell, together with the intrinsic electrical property of Pt, contributes to minimizing the impedance. The gold-platinum double-layer sheath prevents leaching of cytotoxic Ag ions, thus improving biocompatibility. Homogeneously dispersed Pt NPs, synthesized in situ during fabrication of the nanocomposite, simultaneously enhance conductivity, reduce impedance, and improve stretchability by supporting the percolation network formation. This intrinsically stretchable nanocomposite conductor can be applied to wearable and implantable bioelectronics for recording biosignals and delivering electrical stimulations in vivo. English American Chemical Society Stretchable Low-Impedance Conductor with Ag-Au-Pt Core-Shell-Shell Nanowires and in Situ Formed Pt Nanoparticles for Wearable and Implantable Device Article 10.1021/acsnano.2c12659 1 ACS Nano, v.17, no.8, pp.7550 - 7561 ACS Nano 17 8 7550 7561 N scie scopus 000970103900001 2-s2.0-85152643747 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article SKIN ELECTRONICS stretchable metallic nanocomposite low impedance stretchable bioelectrode core-shell nanowire in situ nanoparticle implantable bioelectronic