Retraction: Wettability-gradient-driven micropump for transporting discrete liquid drops

This is a Retraction for the article 2013 J. Micromech. Microeng. 23 035036. The science reported in this article is not incorrect. This article does not include all co-authors who contributed to the work. The article incorrectly attributes work performed at the University of California to the University of Jordan, and fails to acknowledge contributions from Georgia Institute of Technology. This article does not acknowledge the sources of funding for the work and the reference list is incomplete. This article was submitted by Hamzeh K Bardaweel without the knowledge of the other authors.