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Journal Article Bioinspired Omnidirectional Interface Engineered Flexible Island for Highly Stretchable Electronics
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Authors
Osman Gul, Myoung Song, Chang-Yeon Gu, Jihyeon Ahn, Kichul Lee, Taek-Soo Kim, Junseong Ahn, Hye Jin Kim, Inkyu Park
Issue Date
2025-01
Citation
Small, v.권호미정, pp.1-13
ISSN
1613-6810
Publisher
Wiley - V C H Verlag GmbbH & Co.
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/smll.202410247
Abstract
With the advancement of electronics, there is a growing need to effectively combine rigid, flexible, and stretchable materials to build hybrid electronics. However, the interfacial transition between rigid/flexible and stretchable substrates presents considerable challenges, mainly due to differences in elastic moduli, complicating their integration for practical usage. Here, bioinspired omnidirectional interfacial-engineered flexible islands (BOIEFI) are introduced for a robust transition from flexible to stretchable substrates. These BOIEFIs enable the creation of highly stretchable and durable hybrid substrates capable of withstanding diverse physical deformations such as stretching, twisting, and even poking. Inspired by plant roots, BOIEFIs are designed with primary and secondary root structures that provide flexible mechanical interlocking between substrates with different elastic moduli. Through experimental and computational methods, optimized BOIEFIs exhibit significantly enhanced stretchability and improved fatigue life. To demonstrate the broad applicability, light-emitting diodes (LEDs) are integrated into BOIEFIs to establish a stretchable display. In addition, a human-machine interface device with soft pressure sensors and an LED array is fabricated for the implementation of hybrid electronics. This approach facilitates the harmonious integration of rigid, flexible, and stretchable substrates, leading to the creation of soft, highly stretchable, and durable hybrid electronics.
KSP Keywords
Computational methods, Elastic moduli, Human Machine Interface(HMI), Hybrid electronics, Hybrid substrate, Interface device, LED Array, Mechanical interlocking, Plant roots, Pressure Sensor, STRETCHABLE ELECTRONICS