Title:
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Self-assembly of block copolymers under nonisothermal annealing conditions as revealed by grazing-incidence small-angle X-ray scattering
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Author:
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Fernández Regúlez, Marta; Solano, Eduardo; Evangelio Araujo, Laura; Gottlieb, Steven; Pinto-Gomez, Christian; Rius, Gemma; Fraxedas, Jordi; Gutiérrez-Fernández, Edgar; Nogales, Aurora; García-Gutiérrez, Mari Cruz; Ezquerra, Tiberio A.; Pérez Murano, Francesc
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Abstract:
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Altres ajuts: the ICN2 is funded by the CERCA program/General-itat de Catalunya. The ICN2 is supported by the Severo Ochoa Centres of Excellence programme, funded by the Spanish Research Agency (AEI, grant No. SEV-2017-0706) (MINECO/FEDER, UE). |
Abstract:
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An accurate knowledge of the parameters governing the kinetics of block copolymer self-assembly is crucial to model the time- and temperature-dependent evolution of pattern formation during annealing as well as to predict the most efficient conditions for the formation of defect-free patterns. Here, the self-assembly kinetics of a lamellar PS-b-PMMA block copolymer under both isothermal and non-isothermal annealing conditions are investigated by combining grazing-incidence small-angle X-ray scattering (GISAXS) experiments with a novel modelling methodology that accounts for the annealing history of the block copolymer film before it reaches the isothermal regime. Such a model allows conventional studies in isothermal annealing conditions to be extended to the more realistic case of non-isothermal annealing and prediction of the accuracy in the determination of the relevant parameters, namely the correlation length and the growth exponent, which define the kinetics of the self-assembly. |
Subject(s):
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-Block copolymer -Self-assembly -Kinetics -Correlation length -GISAXS |
Rights:
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open access
Tots els drets reservats.
https://rightsstatements.org/vocab/InC/1.0/ |
Document type:
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Article |
Published by:
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Share:
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Uri:
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https://ddd.uab.cat/record/251010
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