Print Email Facebook Twitter Aggregation Phenomena in Atomic Layer Deposition Title Aggregation Phenomena in Atomic Layer Deposition: Bridging Macro and Nano Author Grillo, F. (TU Delft ChemE/Product and Process Engineering) Contributor van Ommen, J.R. (promotor) Kreutzer, M.T. (promotor) Degree granting institution Delft University of Technology Date 2018-05-23 Abstract Atomic layer deposition (ALD) is a gas-phase thin film technology that boasts atomic-level control over the amount of material being deposited. A great deal of research effort has been devoted to the exploitation of ALD precision for the synthesis of nanostructures other than thin films such as supported nanoparticles (NPs). ALD is not only precise but also scalable to high-surface-area supports such as powders, which are relevant to a wide range of applications in fields spanning catalysis, energy storage and conversion, and medicine. Yet, translating the precision of ALD of thin films to the synthesis of NPs is not straightforward. In fact, ALD is mostly understood in terms of self-limiting surface reactions leading to a layer-by-layer conformal growth. However, the formation and growth of NPs is bound to be dictated by atomistic processes other than ALD surface reactions, such as the diffusion and aggregation of atoms and NPs. Understanding the role of such non-equilibrium processes is the key to achieving atomic-level control over the morphology of ALD-grown NPs and, in particular, their particle size distribution (PSD) and shape. This thesis is aimed at expanding our atomic-scale understanding of the mechanisms behind the formation of NPs during ALD. In particular, this thesis is based on experiments and models that were devised with an eye to scalability. Subject Atomic layer depositionnanoparticlesaggregationkineticssize distributionfluidized bed reactorsplatinumnanorodstitaniaModeling To reference this document use: https://doi.org/10.4233/uuid:97fabd08-203c-4471-9596-7ad91f7eb2c0 ISBN 978-90-65624-23-9 Part of collection Institutional Repository Document type doctoral thesis Rights © 2018 F. Grillo Files PDF Thesis_Final_FG.pdf 56.93 MB Close viewer /islandora/object/uuid:97fabd08-203c-4471-9596-7ad91f7eb2c0/datastream/OBJ/view