Novel Electrical Analytical Model of Serpentine Stretchable Interconnect Under Mechanical Effects

Advanced stretchable interconnects are the essential and crucial entities for realizing flexible electronic (FE) systems. The fundamental requirement of the stretchable interconnect is to transmit electrical signals to different components of the FE systems even under the mechanical deformations. In this research, a comprehensive analytical model of serpentine stretchable interconnect is developed. The shape of serpentine and its geometric variables have been envisaged in detail. The proposed model provides formulation for resistance (Rst), inductance (Lst), and capacitance (Cst) to accurately capture the complex electrical behavior of stretchable interconnects under varying degrees of deformation. The work aims to provide deeper understanding of interplay between these fundamental electrical and mechanical parameters, facilitating optimization of stretchable interconnect designs for enhanced performance and reliability. The proposed analytical model results are validated with the model developed using finite element analysis (FEA) based ANSYS EDA platform. The comparison of two model shows good agreement with one another. Further, the thermal and electric field analysis of the considered model is explored. The present research can be useful for designing and optimization of FE systems, paving way for advancements in wearable technology, medical devices and other applications those demand reliable and adaptable interconnection solutions.