Micromachines (ISSN 2072-666X) is a peer-reviewed open access journal on the science and technology of small structures, devices and systems, 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), Ei Compendex, Scopus and other databases. Citations to become available in PubMed, full-text archived in PubMed Central. Rapid Publication: manuscripts are peer-reviewed and a first decision provided to authors approximately 13.5 days after submission; acceptance to publication is undertaken in 1.9 days (median values for papers published in this journal in the second half of 2019). 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. Testimonials: See what our authors say about Micromachines Impact Factor: 2.426 (2018) ; 5-Year Impact Factor: 2.480 (2018)