However, due to the ongoing COVID-19 pandemic, the decision was made to hold the conference via the internet on March 12-15, 2021. The abbreviation of the conference was thus changed from ACMFMS 2020 to ACMFMS 2020þ1. This date also marked ten years since the Tohoku Earthquake (also known as the Great East Japan Earthquake, which occurred at 2:46 pm on March 11, 2011).In order to effectively use limited resources and build a sustainable society, it is necessary to design and develop highly functional materials and structures. Research on theoretical and applied mechanics is very important for increasing the functionality of materials and structures for their safe use. Additionally, solid mechanics is the basis of advanced industrial technology. The aim of ACMFMS 2020þ1 was to disseminate state-of-the-art research on the mechanics of functional materials and structures while encouraging collaboration among multidisciplinary investigators across various diverse scientific disciplines. Despite being held online, the conference was conducive to fostering thoughtful and productive interaction among attendees, especially early career researchers across Asia. Collectively, the discussions at the conference further contributed to our knowledge and fundamental understanding of the mechanics of