The fundamental properties of small particles and their potential for groundbreaking applications are among the most exciting areas of study in modern physics, chemistry, and biology. The GRC on Clusters, Nanocrystals & Nanostructures synthesizes contributions from these inter-related fields that reflect the pivotal role of nano-particles at the interface between these disciplines. Size-dependent optical, electronic, magnetic and catalytic properties offer prospects for applications in many fields, and possible solutions for many of the grand challenges facing society in the 21st century. The conference will bring together world-class international speakers who are responsible for the most significant recent advances in the fundamental science and applications of nanomaterials. Specific emphasis will be given to advances in spectroscopy, fundamental physical studies of clusters and nanocrystals, catalysis, synthesis and chemical doping, biological applications, magnetic properties, and photonic devices. Elements of these separate fields will be brought together in all sessions, such as those on applications of nanocrystal based multiple exciton generation and spectroscopic studies of biological systems using clusters. The goal of the 2013 Gordon Conference is to continue the historical interdisciplinary tradition of this series and discuss the most recent advances, basic scientific questions, and emerging applications of clusters, nanocrystals, and nanostructures. The conference will cover a wide range of topics, from fundamental science to applied nano-engineering, and will provide a balance among the three sub-areas of the conference. We believe that this combination of balance and breadth provides the greatest potential to nucleate new ideas and stimulate cross fertilization. A new feature of this meeting is that over the weekend preceding the GRC there will be a related Gordon Research Seminar for graduate students and postdoctoral scientists. The GRS will allow senior students and postdoctoral fellows to gain valuable leadership experience as speakers, discussion leaders, and organizers. All attendees will benefit from the planned GRS mentorship program focusing on various potential career paths for a science or engineering Ph.D. Note that the GRS and GRC have separate applications processes and fees, and individuals interested in applying to the GRS need to do so separate from the GRC. The open atmosphere of a Gordon conference, emphasizing the presentation of unpublished results and extensive discussions, is an ideal home for this rapidly developing field and will allow all participants to enjoy a valuable and stimulating experience. Because only a limited number of participants are allowed to attend this conference, and oversubscription is anticipated, we encourage all interested researchers to apply as early as possible. We also encourage all attendees to submit an abstract describing their latest results for presentation at the poster sessions. We anticipate that several posters will be selected for "hot topic" oral presentations during the GRC.