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Opis

With the miniaturization of devices, block §copolymers (BCPs) are emerging as promising §candidates for scaffolds and templates in the §fabrication of nanoscopic structures. Key to the use §of BCPs is control of the orientation and lateral §ordering of their microdomains in thin films. An §external electric field was previously shown to §effectively orient BCP microdomains in a desired §direction. However, complete alignment of §microdomains in BCP thin films remains a challenge §due to achieve due to the preferential interactions §of blocks at the interfaces with the electrodes. §Here, we demonstrate that lithium-PMMA complexes, §formed by adding lithium salts to polystyrene-block-§poly(methyl methacrylate) (PS-b-PMMA) copolymer, §markedly enhanced alignment of BCP microdomains in §thin films under an electric field, mainly by the §increased dielectric contrast and mediated surface §interactions, which significantly reduced the §critical field strength. As a result, the aignment §of the microdomains under the electric field was §significantly enhanced.

Szczegóły książki

• Pełny tytuł: THE ALIGNMENT OF BLOCK COPOLYMER THIN FILMS
• Podtytuł: INFLUENCE OF ION-COMPLEXATION ON THE ALIGNMENT OF BLOCK COPOLYMER THIN FILMS UNDER AN ELECTRIC FIELD
• Autor: Jia-Yu Wang
• Język: Angielski
• Oprawa: Miękka
• Liczba stron: 84
• EAN: 9783639157598
• ID: 06824234
• Wydawca: VDM Verlag Dr. Müller
• Waga: 142 g
• Wymiary: 220 × 150 × 5 mm
• Rok wydania: 2009

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