A Universal Size Design Principle for Stretchable Inorganic Electronics to Work Consistently under Different Interface Conditions,Advanced Functional Materials

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A Universal Size Design Principle for Stretchable Inorganic Electronics to Work Consistently under Different Interface Conditions
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2022-12-01 , DOI: 10.1002/adfm.202210880
Shuang Li _{1,

2} , Yuqun Lan _{1,

2} , YongAn Huang ₃ , Yuli Chen ₄ , Yewang Su _{1,

2}

Affiliation

Stretchable inorganic electronics are usually designed and calibrated under free interface condition, while the interface conditions between the devices and skins/organs in practical applications are rather complex (free, slidable, or bonded) and may switch among them. In the ideal situation, the mechanical and electrical performances have to be consistent under different interface conditions, to ensure the accuracy and robustness of the devices. Here, the effect of interface conditions on the mechanical and electrical performances is studied for stretchable inorganic electronics with different configurations by theoretical analysis, finite element analysis and experiment. A universal size design principle is proposed for stretchable inorganic electronics to work consistently under different interface conditions, i.e., the period length of the devices/interconnects has to be the same order of magnitude as the encapsulation thickness or less. To ensure the comfort of human skin/organs, micron-scale geometrical design is necessary for epidermal electronics according to the above designed principle. This finding is of great significance for ensuring the accuracy and robustness of stretchable inorganic electronics in practical applications.

中文翻译：

可伸缩无机电子器件在不同界面条件下一致工作的通用尺寸设计原则

可伸缩无机电子器件通常在自由界面条件下进行设计和校准，而实际应用中器件与皮肤/器官之间的界面条件相当复杂（自由、可滑动或粘合），并且可能在它们之间切换。在理想情况下，机械和电气性能必须在不同的接口条件下保持一致，以确保设备的准确性和鲁棒性。在这里，通过理论分析、有限元分析和实验研究了界面条件对具有不同配置的可拉伸无机电子器件的机械和电学性能的影响。提出了一种通用尺寸设计原则，用于可拉伸无机电子器件在不同界面条件下一致工作，即器件/互连的周期长度必须与封装厚度相同或更小。为保证人体皮肤/器官的舒适性，根据上述设计原理，表皮电子器件需要进行微米级的几何设计。这一发现对于确保可拉伸无机电子器件在实际应用中的准确性和鲁棒性具有重要意义。

更新日期：2022-12-01

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