Zhiyuan Ma, Yi Liu, Jian-Guan Hua, Yu Lei, Tao Wang, Lei Zhang, Ning Lin, Cuifang Kuang, Ruixiang Qu, Jin Huang, Yuan Jin, Biwei Deng
{"title":"Laser-Driven Transfer Printing of Hyper-Stretchable Liquid Metal Electronics","authors":"Zhiyuan Ma, Yi Liu, Jian-Guan Hua, Yu Lei, Tao Wang, Lei Zhang, Ning Lin, Cuifang Kuang, Ruixiang Qu, Jin Huang, Yuan Jin, Biwei Deng","doi":"10.1002/aelm.202500244","DOIUrl":null,"url":null,"abstract":"Liquid metal (LM) alloys can conform to large deformations for flexible and stretchable electronics. The high surface energy and low wettability of LM hinder the binding with flexible substrates, making it difficult to precisely pattern LM-only electronic devices. Herein, a laser lift-off-and-fuse (LLOF) process is proposed for transfer printing LM onto flexible substrates with a patterning resolution of hundreds of microns. Liquid metal nanoparticles (LM NPs) from the donor substrate are transferred and subsequently activated on the receiver substrate by laser pulses, resulting in uniform, conductive patterns with arbitrary designs. Specifically, the LLOF method involves two steps: a transferring step by high-fluence laser pulses and an in situ activation step by low-fluence laser pulses. The LLOF method is additive and free of thermal or chemical damage to soft substrates. It brings superior quality and processability for high-precision LM flexible devices on stretchable substrates. Multiphysics numerical simulations provide a detailed demonstration of the transient vaporization of LM NPs and reveal a dynamic vapor-driven droplet transfer process. Finally, LM flexible devices with high conductivity, large ultimate strain, excellent fatigue resistance, and controllable strain conductivity are demonstrated, respectively.","PeriodicalId":110,"journal":{"name":"Advanced Electronic Materials","volume":"85 1","pages":""},"PeriodicalIF":5.3000,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Electronic Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/aelm.202500244","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Liquid metal (LM) alloys can conform to large deformations for flexible and stretchable electronics. The high surface energy and low wettability of LM hinder the binding with flexible substrates, making it difficult to precisely pattern LM-only electronic devices. Herein, a laser lift-off-and-fuse (LLOF) process is proposed for transfer printing LM onto flexible substrates with a patterning resolution of hundreds of microns. Liquid metal nanoparticles (LM NPs) from the donor substrate are transferred and subsequently activated on the receiver substrate by laser pulses, resulting in uniform, conductive patterns with arbitrary designs. Specifically, the LLOF method involves two steps: a transferring step by high-fluence laser pulses and an in situ activation step by low-fluence laser pulses. The LLOF method is additive and free of thermal or chemical damage to soft substrates. It brings superior quality and processability for high-precision LM flexible devices on stretchable substrates. Multiphysics numerical simulations provide a detailed demonstration of the transient vaporization of LM NPs and reveal a dynamic vapor-driven droplet transfer process. Finally, LM flexible devices with high conductivity, large ultimate strain, excellent fatigue resistance, and controllable strain conductivity are demonstrated, respectively.
期刊介绍:
Advanced Electronic Materials is an interdisciplinary forum for peer-reviewed, high-quality, high-impact research in the fields of materials science, physics, and engineering of electronic and magnetic materials. It includes research on physics and physical properties of electronic and magnetic materials, spintronics, electronics, device physics and engineering, micro- and nano-electromechanical systems, and organic electronics, in addition to fundamental research.