Multifunctional nylon filaments for simultaneous ultra-violet light and strain sensing Peng Zhang, Nicco Ulbricht, Alain Boldini, Osgar John Ohanian III and Maurizio Porfiri Eur. Phys. J. D, 77 3 (2023) 44 Published online: 16 March 2023 DOI: 10.1140/epjd/s10053-023-00626-4