Contributed papers are solicited for a special section in the Journal of Process Control on the control of micro- and nano-scale assembly. The control of a large number of small particles into ordered structures can enable novel optical, mechanical, and electronic properties, but the practical difficulties of real-time sensing, actuation, and dynamic modeling limit current practice. For example: - Typically, nano- and micro-scale assembly systems have many fewer actuators than particles, limiting the controllability of the system. However, when the particles are indistinguishable, it may still be possible to drive the system toward a desired structure. - Sensing is also challenging, due to the slow speed and invasive nature of scanning probe imaging methods and the limited information provided by noninvasive optical methods. - The system dynamics are typically nonlinear and stochastic, as well as high-dimensional; this makes model generation and validation more difficult, and also limits the applicability of many existing controller design techniques. Original research contributions are invited, as well as tutorial or review papers. Papers are due by November 1, 2013, and should be submitted online: http://www.journals.elsevier.com/journal-of-process-control/