Ultra-tough and high-resilient Mechanochromic Fibers towards real-world stress detection
발표자
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초록
내용
Cholesteric liquid crystal elastomers (CLCEs), which exhibit mechanochromic properties responsive to mechanical deformation, have been demonstrated as optical sensors in the form of stretchable films or fibers. However, previous research on CLCE fibers has been constrained by inherent limitations such as high hysteresis and low modulus, which restrict their real-time responsiveness. To overcome these limitations, we developed a novel core-sheath composite fiber integrating a thermoplastic polyurethane (TPU) core with a thin CLCE layer. Additionally, by introducing a carbon black filler, we produced three distinct core fibers with different moduli—classified as low (LM), medium (MM), and high (HM) modulus. The combined mechanical and optical adjustability of CLCE/TPU fibers offers an on-demand platform for stretchable CLCE-based optical sensors, providing both structural robustness and real-time mechanochromic response.