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Seminar organised by EMAT
Subject : Atomic and nanocrystal superlattices: the beauty and the science
Speaker: D. Vanmaekelbergh, Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science, University of Utrecht.
Abstract:
My two main ambitions in science are the control of the structure of an extended system up to the last atom, and a full mapping of the property-structure relationship. Control emerges on two scales: (i) the atomic scale, i.e. control of the atomic composition and structure, for instance in synthesis of 2-D graphene nanostructures or 3-D semiconductor nanocrystals, (ii) a more extended scale, e.g. the nanocrystal scale in a self-assembled superlattice structure. The relationship between the (electronic) properties and the (atomic) structure is measured with UHV cryogenic scanning probe techniques.
In this lecture, I will first present recent progress in the atomic imaging of graphene nanostructures and ribbons, and single colloidal semiconductor quantum dots. Relating this atomic information to the opto-electronic properties should give insight in the chemistry and physics of these systems. Second, the self-organization of colloidal nanocrystals into (binary) superlattices will be discussed
When and where: Thursday, February 16, 2012 at 11.00 h in room U.408, Campus Groenenborger
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