Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry

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	Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry
	Man, Xingkun 1,2; Zhou, Pan 3; Tang, Jiuzhou 4; Yan, Dadong 3; Andelman, David 5,6
刊名	MACROMOLECULES
	2016-11-08
卷号	49 期号:21 页码:8241-8248
英文摘要	We propose a directed self-assembly mechanism toward obtaining defect-free perpendicular lamellar phases of diblock copolymer (BCP) thin films. In our numerical study, a thin BCP film having a flat top surface is cast on a unidirectional corrugated solid substrate. The substrate is treated chemically and has a weak preference toward one of the two BCP components. Employing self-consistent field theory (SCFT), we find that there is an enhanced synergy between two substrate characteristics: its topography (geometrical roughness) combined with a weak surface preference. This synergy produces the desired perpendicular lamellar phase with perfect in-plane ordering. Defect-free BCP lamellar phases are reproducible for several random initial states and are obtained for a range of substrate roughness and chemical characteristics, even for a unidirectional multimode substrate roughness. Our theoretical study suggests possible experiments that will explore the interplay between unidirectional substrate corrugation and chemical surface treatment. It may lead to viable and economical ways of obtaining BCP films with defect-free lateral alignment.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35705]
专题	化学研究所_其它
作者单位	1.Beihang Univ, Ctr Soft Matter Phys & Its Applicat, Beijing 100191, Peoples R China 2.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 3.Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China 4.Chinese Acad Sci, Joint Lab Polymer Sci & Mat, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel
推荐引用方式 GB/T 7714	Man, Xingkun,Zhou, Pan,Tang, Jiuzhou,et al. Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry[J]. MACROMOLECULES,2016,49(21):8241-8248.
APA	Man, Xingkun,Zhou, Pan,Tang, Jiuzhou,Yan, Dadong,&Andelman, David.(2016).Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry.MACROMOLECULES,49(21),8241-8248.
MLA	Man, Xingkun,et al."Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry".MACROMOLECULES 49.21(2016):8241-8248.