Fabricating functional circuits on 3D freeform surfaces via intense pulsed light-induced zinc mass transfer

MATERIALS TODAY

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Article

Yi, Ning¹  Gao, Yuyan²  Lo Verso, Antonino²  Zhu, Jia²  Erdely, Daniel²  Xue, Cuili^2,3  Lavelle, Robert¹  Cheng, Huanyu^1,2 

[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[2] Penn State Univ, Dept Engn Sci & Mech, Mat Res Inst, University Pk, PA 16802 USA

[3] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Inst Nano Biomed & Engn, Dept Instrument Sci & Engn, Dongchuan Rd, Shanghai 200240, Peoples R China

关键词: Intense pulsed light;    Zinc mass transport;    3D freeform surfaces;    Functional circuits;   

DOI  :  10.1016/j.mattod.2021.07.002

来源: Elsevier

【 摘 要 】

Deployment of functional circuits on a 3D freeform surface is of significant interest to wearable devices on curvilinear skin/tissue surfaces or smart Internet-of-Things with sensors on 3D objects. Here we present a new fabrication strategy that can directly print functional circuits either transient or longlasting onto freeform surfaces by intense pulsed light-induced mass transfer of zinc nanoparticles (Zn NPs). The intense pulsed light can locally raise the temperature of Zn NPs to cause evaporation. Lamination of a kirigami-patterned soft semi-transparent polymer film with Zn NPs conforming to a 3D surface results in condensation of Zn NPs to form conductive yet degradable Zn patterns onto a 3D freeform surface for constructing transient electronics. Immersing the Zn patterns into a copper sulfate or silver nitrate solution can further convert the transient device to a long-lasting device with copper or silver. Functional circuits with integrated sensors and a wireless communication component on 3D glass beakers and seashells with complex surface geometries demonstrate the viability of this

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