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Pàgina inicial > Articles > Articles publicats > Self-assembly of block copolymers under nonisothermal annealing conditions as revealed by grazing-incidence small-angle X-ray scattering |
Data: | 2020 |
Resum: | 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. |
Ajuts: | European Commission 665919 Ministerio de Economía y Competitividad RTI2018-102007-B-I00 Ministerio de Economía y Competitividad RYC-2016-21412 Ministerio de Economía y Competitividad MAT2015-66443-C02-1-R Ministerio de Economía y Competitividad MAT2015-68307-P Ministerio de Economía y Competitividad TEC2015-69864-R Ministerio de Economía y Competitividad PID209-107514GB-100 Agencia Estatal de Investigación SEV-2017-0706 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1187 |
Nota: | 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). |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Block copolymer ; Self-assembly ; Kinetics ; Correlation length ; GISAXS |
Publicat a: | Journal of Synchrotron Radiation, Vol. 27, issue 5 (Sep. 2020) , p. 1278-1288, ISSN 1600-5775 |
Postprint 29 p, 1.6 MB |