10.1021/la062891f.s001 Zhen Yuan Zhen Yuan Dimiter N. Petsev Dimiter N. Petsev Brian G. Prevo Brian G. Prevo Orlin D. Velev Orlin D. Velev Plamen Atanassov Plamen Atanassov Two-Dimensional Nanoparticle Arrays Derived from Ferritin Monolayers American Chemical Society 2007 Ferritin MonolayersA scalable technique iron oxide nanoparticles clusters tens sol precursor cm 2 convective iron oxide mineral core silica coatings iron storage protein iron oxide nanoparticle arrays protein shell silica matrix encapsulated oxide film formation iron oxide cores silica matrix film ferritin molecules 2007-05-08 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Two_Dimensional_Nanoparticle_Arrays_Derived_from_Ferritin_Monolayers/3009073 A scalable technique for making silica coatings with embedded two-dimensional arrays of iron oxide nanoparticles is presented. The iron oxide nanoparticle arrays were formed by depositing quasi-crystalline ferritin layers, an iron storage protein with an iron oxide mineral core, on solid substrates by a spread-coating technique based on evaporation-induced convective assembly. The layer of protein molecular arrays was then encapsulated in a silica matrix film deposited from a sol precursor. The organic protein shell of the ferritin molecules was then removed by controlled pyrolysis, leaving ordered iron oxide cores bound in the silica matrix. This article is the first report on combining convective self-assembly of proteins with sol−gel techniques of oxide film formation. The technique is technologically feasible and scalable to make coatings of encapsulated ordered magnetic clusters tens of cm<sup>2</sup> or larger in size.