SJTU's Deng Tao and Shang Wen team have published original research findings in the field of Stretchable hermetic seals technology in the journal Science.
Recently, Professor Deng Tao and Associate Researcher Shang Wen from the School of Materials Science and Engineering at Shanghai Jiao Tong University, in collaboration with Professor Michael D. Dickey's research group from North Carolina State University and Dr. Wang Jun from A123 Systems R&D Center, have made significant breakthroughs in the field of Stretchable hermetic packaging materials and technology. Their research achievement titled "Liquid metal-based soft, hermetic, and wireless-communicable seals for stretchable systems" has been published in Science. You can find the publication at the following link: Science publication.
The research findings of Professor Deng Tao and Associate Researcher Shang Wen's team have been published online in Science
Soft materials tend to be highly permeable to gases, making it difficult to create stretchable hermetic seals. With the integration of spacers, we demonstrate the use of liquid metals, which show both metallic and fluidic properties, as stretchable hermetic seals. Such soft seals are used in both a stretchable battery and a stretchable heat transfer system that involve volatile fluids, including water and organic fluids. The capacity retention of the battery was ~72.5% after 500 cycles, and the sealed heat transfer system showed an increased thermal conductivity of approximately 309 watts per meter-kelvin while strained and heated. Furthermore, with the incorporation of a signal transmission window, we demonstrated wireless communication through such seals. This work provides a route to create stretchable yet hermetic packaging design solutions for soft devices.
Shanghai Jiao Tong University's School of Materials Science and Engineering researchers, Qingchen Shen, Modie Jiang, Ruitong Wang, Kexian Song, and Man Hou Vong from the Department of Chemistry and Molecular and Biological Engineering at North Carolina State University, are the co-first authors of the paper. Professor Taotao Deng and Associate Researcher Wen Shang from Shanghai Jiao Tong University's School of Materials Science and Engineering, Professor Michael D. Dickey from the Department of Chemistry and Molecular and Biological Engineering at North Carolina State University, and Dr. Jun Wang from A123 Systems Research and Development Center are the co-corresponding authors of the paper. Shanghai Jiao Tong University is the first institution listed in the paper.
This work was supported by the Innovation Program of Shanghai Municipal Education Commission (grant 2019-01-07-00-02-E00069), the National Natural Science Foundation of China (51973109 and 51873105), the Zhi-Yuan Endowed fund from Shanghai Jiao Tong University, and Shanghai Jiao Tong University Overseas Study Grants. M.D.D. is grateful for the support from the National Science Foundation (ASSIST, EEC-1160483, and CMMI- 2032415). W.J. acknowledges the support from MOTIE (Ministry of Trade, Industry and Energy) in Korea, under the Fostering Global Talents for Innovative Growth Program (P0008746) supervised by the Korea Institute for Advancement of Technology (KIAT).