Nanomaterials (ISSN 2079-4991; CODEN: NANOKO) is an international peer-reviewed open access journal published monthly online by MDPI. Open Access—free for readers, with article processing charges (APC) paid by authors or their institutions. High Visibility: indexed by the Science Citation Index Expanded (Web of Science), Scopus, Chemical Abstracts, Inspec and Polymer Library. Citations available in PubMed, full-text archived in PubMed Central. CiteScore (2019 Scopus data): 4.1, which equals rank 147/460 (Q1) in 'General Materials Science' and rank 73/281 (Q1) in 'General Chemical Engineering'. Rapid Publication: manuscripts are peer-reviewed and a first decision provided to authors approximately 12.8 days after submission; acceptance to publication is undertaken in 3.7 days (median values for papers published in this journal in the first half of 2020). Recognition of Reviewers: reviewers who provide timely, thorough peer-review reports receive vouchers entitling them to a discount on the APC of their next publication in any MDPI journal, in appreciation of the work done. Impact Factor: 4.324 (2019) ; 5-Year Impact Factor: 4.514 (2019)