By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Polymer Research have been presented. According to news reporting out of Barcelona, Spain, by VerticalNews editors, research stated, "We report here the fabrication of periodic sub-25 nm diameter size cylinder structures using block copolymer (BCP) directed self-assembly on nanoimprinted topographically patterned substrates. Tailored polyhedral oligomeric silsesquioxanes (POSSs) films were spin coated onto silicon substrates and were patterned by nanoimprint lithography to produce topographies commensurable with the BCP domain spacing."
Our news journalists obtained a quote from the research from Catalan Institution for Research and Advanced Studies (ICREA), "The chemistry of the POSS was tuned to control the alignment and orientation of the BCP films. The substrates were used to direct the microphase separation (following toluene solvent annealing) of a hexagonal structure forming polystyrene-block-polydimethylsiloxane (PS-b-PDMS) having a domain spacing of 42.6 nm and PDMS cylinder widths of 23.7 nm. On more hydrophilic FOSS substrates the cylinders were obtained parallel to the substrate plane and aligned with the topography. In contrast, in more hydrophobic POSS patterns, the cylinders align perpendicular to the substrate plane."
According to the news editors, the research concluded: "The use of these methods for the nanofabrication of vias, nanofluidic devices or interconnect structures of sub-25 nm feature size is discussed."
For more information on this research see: Soft-graphoepitaxy using nanoimprinted polyhedral oligomeric silsesquioxane substrates for the directed self-assembly of PS-b-PDMS. European Polymer Journal, 2013;49(11):3512-3521. European Polymer Journal can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; European Polymer Journal - www.elsevier.com/wps/product/cws_home/294)
Our news journalists report that additional information may be obtained by contacting D. Borah, ICREA, Catalan Inst Res & Adv Studies, Barcelona 08010, Spain. Additional authors for this research include C.D. Simao, R. Senthamaraikannan, S. Rasappa, A. Francone, O. Lorret, M. Salaun, B. Kosmala, N. Kehagias, M. Zelsmann, C.M. Sotomayor-Torres and M.A. Morris.
Keywords for this news article include: Spain, Europe, Barcelona, Polymer Research
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