This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1002/mdp2.90 This article is protected by copyright. All rights reserved. Esmaeely Neisiany Rasoul (Orcid ID: 0000-0003-1486-0856) Razavi Javad (Orcid ID: 0000-0002-2574-065X) Naeimirad Mohammadreza (Orcid ID: 0000-0003-3138-7431) Berto Filippo (Orcid ID: 0000-0001-9676-9970) Core-shell nanofibers for developing self-healing materials: Recent progress and future directions Rasoul Esmaeely Neisiany 1,* , Saied Nouri Khorasani 1 , Jeremy Kong Yoong Lee 2 , Javad Razavi 3 , Mohammad Saeid Enayati 1 , Mohammadreza Naeimirad 4 , Filippo Berto 3 , and Seeram Ramakrishna 2 1 Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156- 83111, Iran. 2 Centre for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore. 3 Department of Mechanical and Industrial Engineering, NTNU, Richard Birkelands vei 2b, 7491 Trondheim, Norway. 4 Department of Materials and Textile Engineering, Faculty of Engineering, Razi University, Kermanshah, Iran. Corresponding author’s email: r.esmaeely@pd.iut.ac.ir