Enhancing packing density and maximum elongation of 2D stretchable wavy circuit: Effect of section tilting

Abstract

Wavy pattern circuits are widely used in flexible displays, wearable devices, and biosensor research. In this study, we propose a tilted 2D stretchable wavy circuit design to enhance circuit integrity and reduce electric resistance of stretchable devices. The experimental and finite element analysis revealed that the tilting wavy circuit section increased the maximum stretch ratio of the circuit and provided stable conductance during elongation. In addition, increasing the tilt angle has advantages in increasing the density of the circuit in the unit area without decreasing the maximum elongation of the wavy circuit, which will eventually increase the level of integrity. By realizing a tilted wavy section with different fabrication methods, we assure that the tilted wavy circuit design will eventually lead to the development of high-resolution stretchable devices with high power efficiency

Keywords:

• Elongation
• finite element analysis
• flexible
• wavy circuit
• tilt section

Additional information

Funding

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (No. 2012R1A3A2048841). This work was supported by the research grant of the Kongju National University in 2020.