Researchers at Pohang University of Science and Technology (POSTECH) have developed a breakthrough technology to view the deformation of serpentine structures in real time. The serpentine structure is a critical innovation in stretchable technology that enables flexible and deformable electronics.
Stretchable electronics have garnered keen research attention owing to their potential applications in diverse fields like displays, sensors, semiconductors, or electronic skin.
Since the stretchable technology is relatively fresh, researchers face hurdles in developing a stretchable interconnect structure capable of significant stretching with no electrical functionality loss.
To make advancements in this field, understanding the structural characteristics and deformation processes during all stages is crucial. Until now, analyzing such deformation in serpentine strictures was possible only after physical damage.
This scenario limited the observation data from previous stretching stages, thereby hindering real-time insights into structural behavior.
To overcome this challenge, POSTECH researchers induced changes in structural color – color shifts occurring at the nanoscale during deformation.
The team utilized Chiral Liquid Crystal Elastomer (CLCE) and developed a system that precisely and in real-time visualizes deformation in serpentine structures. CLCE is a mechanochromic material that changes color when stretched.
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The innovation confirmed the technology’s potential in optimized design applications. It also eliminates the need for complex nanofabrication processes to provide a clear, real-time understanding of how serpentine structures deform.
“This research opens the door to precise evaluation and design of the connection structures central to stretchable technology,” says Professor Su Seok Choi.
Professor Su Seok Choi also asserted its broader applications and acceleration in commercialization in the fields of displays, semiconductors, sensors, electronic skin, smart clothing, and soft robotics.
Journal Reference
- Han, S. H., Shin, J. H., Yang, H. J., Nam, S., Park, J. Y., & Choi, S. S. Optical Visualization of Stretchable Serpentine Interconnects using Chiral Liquid Crystal Elastomers. Advanced Science. DOI: 10.1002/advs.202408346
