γ-ray induced microstructure modulation for enhanced output performance of polyimide-based piezoelectric composites - Dong Yeol Hyeon; Gyoung-Ja Lee; Hyeon Jun Park; Dong Won Jeon; Han Uk Lee; Sung Beom Cho; Jaehun An; Nagamalleswara Rao Alluri; Young Hoon Jung; Changyeon Baek; HakSu Jang; SungHoon Kim; et al. (Chemical Engineering Journal, 2026)