Machine learning-enabled bimodal flexible tactile sensors for intelligent contact-noncontact recognition - Defan Wang; Yi Zhao; Xinxin Zhao; Chengfu Han; Kangkang Zhou; Yajie Zhang; Wei Zhai; Guoqiang Zheng; Jianwei Xu; Kun Dai; Chuntai Liu; Changyu Shen (Chemical Engineering Journal, 2026)