Online Journal of Materials Science is an Open Access journal accessible for free on the Internet. At Science Publications Publishing (SCIPUB), we guarantee that no university library or individual reader will ever have to buy a subscription or pay any pay-per-view fees to access articles in the electronic version of the journal. There is hence no revenue at SCIPUB neither from the sale of subscriptions to the electronic version of the journal nor from pay-per-view fees. Yet, the online publication process does involve costs including those pertaining to setup and maintenance of the publication infrastructure, routine operation of the journal, processing of manuscripts through peer-reviews, editing, publishing, maintaining the scholarly record, and archiving. To cover these costs, the journal asks US$99 for Article Processing Charges (APC), also called Publication Fees. APC are due when a manuscript has been accepted for publication.