{"file_date_updated":"2018-08-16T12:59:56Z","date_created":"2018-08-16T12:59:02Z","has_accepted_license":"1","abstract":[{"text":"Bottom-up patterning techniques allow for the creation of surfaces with ordered arrays of nanoscale features\r\non large areas. Two bottom-up techniques suitable for the formation of regular nanopatterns on\r\ndifferent length scales are nanosphere lithography (NSL) and block copolymer (BCP) lithography. In this\r\npaper it is shown that NSL and BCP lithography can be combined to easily design hierarchically nanopatterned\r\nsurfaces of different materials. Nanosphere lithography is used for the pre-patterning of\r\nsurfaces with antidots, i.e. hexagonally arranged cylindrical holes in thin films of Au, Pt and TiO2 on SiO2,\r\nproviding a periodic chemical and topographical contrast on the surface suitable for templating in subsequent\r\nBCP lithography. PS-b-PMMA BCP is used in the second self-assembly step to form hexagonally\r\narranged nanopores with sub-20 nm diameter within the antidots upon microphase separation. To\r\nachieve this the microphase separation of BCP on planar surfaces is studied, too, and it is demonstrated\r\nfor the first time that vertical BCP nanopores can be formed on TiO2, Au and Pt films without using any\r\nneutralization layers. To explain this the influence of surface energy, polarity and roughness on the microphase\r\nseparation is investigated and discussed along with the wetting state of BCP on NSL-pre-patterned\r\nsurfaces. The presented novel route for the creation of advanced hierarchical nanopatterns is easily applicable\r\non large-area surfaces of different materials. This flexibility makes it suitable for a broad range of\r\napplications, from the morphological design of biocompatible surfaces for life science to complex\r\npre-patterns for nanoparticle placement in semiconductor technology.","lang":"eng"}],"doi":"10.1039/c8nr01397g","file":[{"relation":"main_file","access_level":"closed","content_type":"application/pdf","creator":"hclaudia","file_size":3875099,"date_updated":"2018-08-16T12:59:56Z","date_created":"2018-08-16T12:59:56Z","success":1,"file_name":"Hierarchical_nanopores_by_block_copolymer_lithography_on_surfaces_of_different_materials_pre-patterned_by_nanosphere_lithography_2018.pdf","file_id":"3922"}],"page":"10005-10017","ddc":["530"],"issue":"21","publication_status":"published","volume":10,"publication_identifier":{"issn":["2040-3364","2040-3372"]},"department":[{"_id":"286"},{"_id":"15"}],"_id":"3921","title":"Hierarchical nanopores formed by block copolymer lithography on the surfaces of different materials pre-patterned by nanosphere lithography","citation":{"chicago":"Brassat, Katharina, Daniel Kool, Julius Bürger, and Jörg Lindner. “Hierarchical Nanopores Formed by Block Copolymer Lithography on the Surfaces of Different Materials Pre-Patterned by Nanosphere Lithography.” <i>Nanoscale</i> 10, no. 21 (2018): 10005–17. <a href=\"https://doi.org/10.1039/c8nr01397g\">https://doi.org/10.1039/c8nr01397g</a>.","short":"K. Brassat, D. Kool, J. Bürger, J. Lindner, Nanoscale 10 (2018) 10005–10017.","bibtex":"@article{Brassat_Kool_Bürger_Lindner_2018, title={Hierarchical nanopores formed by block copolymer lithography on the surfaces of different materials pre-patterned by nanosphere lithography}, volume={10}, DOI={<a href=\"https://doi.org/10.1039/c8nr01397g\">10.1039/c8nr01397g</a>}, number={21}, journal={Nanoscale}, publisher={Royal Society of Chemistry (RSC)}, author={Brassat, Katharina and Kool, Daniel and Bürger, Julius and Lindner, Jörg}, year={2018}, pages={10005–10017} }","apa":"Brassat, K., Kool, D., Bürger, J., &#38; Lindner, J. (2018). Hierarchical nanopores formed by block copolymer lithography on the surfaces of different materials pre-patterned by nanosphere lithography. <i>Nanoscale</i>, <i>10</i>(21), 10005–10017. <a href=\"https://doi.org/10.1039/c8nr01397g\">https://doi.org/10.1039/c8nr01397g</a>","mla":"Brassat, Katharina, et al. “Hierarchical Nanopores Formed by Block Copolymer Lithography on the Surfaces of Different Materials Pre-Patterned by Nanosphere Lithography.” <i>Nanoscale</i>, vol. 10, no. 21, Royal Society of Chemistry (RSC), 2018, pp. 10005–17, doi:<a href=\"https://doi.org/10.1039/c8nr01397g\">10.1039/c8nr01397g</a>.","ama":"Brassat K, Kool D, Bürger J, Lindner J. Hierarchical nanopores formed by block copolymer lithography on the surfaces of different materials pre-patterned by nanosphere lithography. <i>Nanoscale</i>. 2018;10(21):10005-10017. doi:<a href=\"https://doi.org/10.1039/c8nr01397g\">10.1039/c8nr01397g</a>","ieee":"K. Brassat, D. Kool, J. Bürger, and J. Lindner, “Hierarchical nanopores formed by block copolymer lithography on the surfaces of different materials pre-patterned by nanosphere lithography,” <i>Nanoscale</i>, vol. 10, no. 21, pp. 10005–10017, 2018."},"user_id":"55706","year":"2018","intvolume":"        10","status":"public","author":[{"first_name":"Katharina","last_name":"Brassat","id":"11305","full_name":"Brassat, Katharina"},{"first_name":"Daniel","full_name":"Kool, Daniel","id":"44586","last_name":"Kool"},{"first_name":"Julius","last_name":"Bürger","id":"46952","full_name":"Bürger, Julius"},{"first_name":"Jörg","full_name":"Lindner, Jörg","id":"20797","last_name":"Lindner"}],"publisher":"Royal Society of Chemistry (RSC)","publication":"Nanoscale","type":"journal_article","date_updated":"2022-01-06T06:59:55Z","article_type":"original","language":[{"iso":"eng"}]}