Nanomaterials for automotive outer panel components: a review Kartik Virmani, Chirag Deepak, Sarthak Sharma, Utkarsh Chadha and Senthil Kumaran Selvaraj Eur. Phys. J. Plus, 136 9 (2021) 921 Published online: 08 September 2021 DOI: 10.1140/epjp/s13360-021-01931-w