@article {26448,
	title = {Gold Nanoparticle Arrays Organized in Mixed Patterns Through Directed Self-assembly of Ultrathin Block Copolymer Films on Topographic Substrates},
	journal = {Polymer},
	volume = {245},
	year = {2022},
	note = {[["fid":"29683","view_mode":"default","type":"media","attributes":"height":"413","width":"969","style":"width: 352px; height: 150px;","alt":"61. Noga Polymer 2022","title":"61. Noga Polymer 2022","class":"media-element file-default"]]},
	pages = {124727},
	abstract = {Controlling complexity in assemblies of metal and semiconductor nanoparticles has the potential to expand the\&nbsp;utilization of photonic devices into wavelength regimes that are currently inaccessible. Here we show that casting\&nbsp;ultrathin films of asymmetric block copolymers on topographically defined substrates affords four types of\&nbsp;mixed patterns through fine control of film thickness. Analysis of top-view and cross-sectional images revealed\&nbsp;different morphological behavior of the film in the trench and on the plateau, which was explained by the difference\&nbsp;in the type of boundary imposed by each topographic feature. Exposed domains were chemically modified\&nbsp;and selectively decorated with gold nanoparticles, giving rise to nanoparticle superstructures with mixed patterns\&nbsp;in a controlled fashion. We envisage utilization of such hierarchical superstructures as plasmon\&nbsp;waveguides\&nbsp;and metasurfaces.},
	url = {https://doi.org/10.1016/j.polymer.2022.124727},
	author = {Noga Eren and Ofer Burg and Elisheva Michman and Popov, Inna and Shenhar, Roy}
}
