Prof. dr. Alfons Van Blaaderen


Surprises in the self-assembly of particles


When metal or semiconductor nanoparticles are brought into close enough contact, the resulting collective properties of these materials can be as different as individual silicon atoms are from their 3D semiconductor counterpart. Self-assembly is an inherently cheap and powerful way to arrive at such 3D structures, which are also referred to as colloidal crystals. By stopping the self-assembly at controlled ‘supraparticle’ sizes, one gains even more control over the properties of these structures. In this talk, we will show fundamental insights about self-assembly into a spherical confinement and how these insights extend to particles with more complex shapes such as cubes, plates, rods and binary mixtures of nano-particles. We will show that this way of hierarchical self-assemby is useful to tailor optical properties as well. In order to arrive at quantitative real-space analysis of the supraparticles, new methodologies of particle tracking continuously have to be developed.

Wednesday, December 13, 2017

Campus Groenenborger T105

16:00 - 17:00 Colloquium

17:00 - 18:00 Reception