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题名: Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry
作者: Man, XK ;  Zhou, P ;  Tang, JZ ;  Yan, DD ;  Andelman, D
刊名: MACROMOLECULES
出版日期: 2016
卷号: 49, 期号:21, 页码:8241-8248
学科分类: Polymer Science
DOI: http://dx.doi.org/10.1021/acs.macromol.6b01814
通讯作者: Man, XK (reprint author), Beihang Univ, Ctr Soft Matter Phys & Its Applicat, Beijing 100191, Peoples R China. ;  Man, XK (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China. ;  Andelman, D (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China. ;  Andelman, D (reprint author), Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel.
文章类型: Article
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.
类目[WOS]: Polymer Science
关键词[WOS]: FORMING BLOCK-COPOLYMERS ;  THIN-FILMS ;  NANOIMPRINT LITHOGRAPHY ;  ROUGH SURFACES ;  LAMELLAE ;  MORPHOLOGY ;  BEHAVIOR ;  ARCHITECTURE ;  ORIENTATION ;  CONFINEMENT
收录类别: SCI
项目资助者: National Natural Science Foundation of China (NSFC) [21404003, 21434001] ;  joint NSFC-ISF Research Program ;  NSFC [51561145002] ;  Israel Science Foundation (ISF) [885/15, 438/12] ;  United States-Israel Binational Science Foundation (BSF) [2012/060] ;  CAS President's International Fellowship Initiative (PIFI)
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21487
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Man, XK,Zhou, P,Tang, JZ,et al. Defect-Free Perpendicular Diblock Copolymer Films: The Synergy Effect of Surface Topography and Chemistry[J]. MACROMOLECULES,2016,49(21):8241-8248.
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