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Pregled bibliografske jedinice broj: 873478

GISAXS Analysis of the In-Depth Morphology of Thick PS-b-PMMA Films

Lupi, Federico Ferrarese; Giammaria, Tommaso Jacopo; Seguini, Gabriele; Laus, Michele; Dubček, Pavo; Pivac, Branko; Bernstorff, Sigrid; Perego, Michele;
GISAXS Analysis of the In-Depth Morphology of Thick PS-b-PMMA Films // ACS Applied Materials & Interfaces, 9 (2017), 12; 11054-11063 doi:10.1021/acsami.7b01366 (međunarodna recenzija, članak, znanstveni)

GISAXS Analysis of the In-Depth Morphology of Thick PS-b-PMMA Films

Lupi, Federico Ferrarese ; Giammaria, Tommaso Jacopo ; Seguini, Gabriele ; Laus, Michele ; Dubček, Pavo ; Pivac, Branko ; Bernstorff, Sigrid ; Perego, Michele ;

ACS Applied Materials & Interfaces (1944-8244) 9 (2017), 12; 11054-11063

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Sequential infiltration synthesis ; X-ray-scattering ; block-copolymers ; perpendicular orientation ; nanoporous membranes ; solvent evaporation ; water filtration

The morphological evolution of cylinder-forming poly(styrene)-b-poly(methyl methacrylate) block copolymer (BCP) thick films treated at high temperatures in the rapid thermal processing (RTP) machine was monitored by means of in-depth grazing-incidence small-angle X-ray scattering (GISAXS). The use of this nondisruptive technique allowed one to reveal the formation of buried layers composed of both parallel-and perpendicular-oriented cylinders as a function of the film thickness (24 <= h <= 840 nm) and annealing time (0 <= t <= 900 s). Three distinct behaviors were observed depending on the film thickness. Up to h <= 160 nm, a homogeneous film consisting of perpendicular-oriented cylinders is observed. When h is between 160 and 700 nm, a decoupling process between both the air BCP and substrate BCP interfaces takes place, leading to the formation of mixed orientations (parallel and perpendicular) of the cylinders. Finally, for h > 700 nm, the two interfaces are completely decoupled, and the formation of a superficial layer of about 50 nm composed of perpendicular cylinders is observed. Furthermore, the through-film morphology affects the nanodomain long-range order, which substantially decreases in correspondence with the beginning of the decoupling process. When the thick samples are exposed to longer thermal treatments, an increase in the long-range order of the nanodomains occurs, without any sensible variation of the thickness of the superficial layer.

Izvorni jezik

Znanstvena područja


Projekt / tema
098-0982886-2866 - Temeljna svojstva nanostruktura i defekata u poluvodičima i dielektricima (Branko Pivac, )

Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Branko Pivac, (67912)
Pavo Dubček, (61590)

Časopis indeksira:

  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus