Submissions are now closed for oral presentations to WOM 2011, however, contributions are invited for stand-alone posters. WOM 2011 is to take place in Philadelphia, USA - April 3-7 next year.  It will focus on both the fundamental and applied aspects of wear and friction of materials at the macro-, micro- and nano-scale. Special emphasis will be placed on wear issues in harsh environments, energy conversion, and debris particle generation and its impact on the environment.