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Łojkowski M, Chlanda A, Choińska E, Swieszkowski W. Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution. Sci Rep 2021; 11:13299. [PMID: 34168207 PMCID: PMC8225630 DOI: 10.1038/s41598-021-92594-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/02/2021] [Indexed: 11/11/2022] Open
Abstract
The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It was proven that at certain conditions, the phase separation occurred between two fractions of bimodal polystyrene/methyl ethyl ketone solution. The films were prepared by spin-coating, and the segregation between polystyrene phases was investigated by force spectroscopy. Next, water vapour induced secondary phase separation was investigated. The introduction of moist airflow induced the self-assembly of the lower molecular weight into islands and the heavier fraction into a honeycomb. As a result, an easy, fast, and effective method of obtaining island/honeycomb morphologies was demonstrated. The possible mechanisms of the formation of such structures were discussed.
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Affiliation(s)
- Maciej Łojkowski
- Faculty of Material Sciences and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland.
- Centre for Advanced Materials and Technology CEZAMAT, Warsaw University of Technology, Warsaw, Poland.
| | - Adrian Chlanda
- Faculty of Material Sciences and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
- Department of Chemical Synthesis and Flake Graphene, Łukasiewicz Research Network - Institute of Microelectronics and Photonics, Aleja Lotników 32/46, 02-668, Warsaw, Poland
| | - Emilia Choińska
- Faculty of Material Sciences and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland
| | - Wojciech Swieszkowski
- Faculty of Material Sciences and Engineering, Warsaw University of Technology, Wołoska 141, 02-507, Warsaw, Poland.
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2
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Chen CY, Escobedo FA. Molecular Simulations of Laser Spike Annealing of Block Copolymer Lamellar Thin-Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5754-5764. [PMID: 32365301 DOI: 10.1021/acs.langmuir.0c00423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We use molecular dynamics simulations to study the phase behavior of a coarse-grained lamella-forming A-b-B diblock copolymer under thin-film soft confinement for different heating cycle lengths, film thicknesses, and substrate-polymer affinities. This model describes the effect on thin-film morphology with a free surface (air-polymer interface) and a solid substrate. Our simulation results were first validated by showing that they capture changes for the order-disorder transition temperature with annealing conditions consistent with those found in laser spike annealing experiments, when the vertical lamella phase formed on neutral substrates. In addition, simulations with a substrate selective for a particular block revealed the formation of other phases, including a mixed vertical-horizontal lamella and a metastable island phase having horizontal but incomplete lamella layers. The nanoscale roughness features of this island phase, and hence its surface wettability, can be tuned with suitable choices of chemistry and annealing conditions.
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Affiliation(s)
- Chih-Yin Chen
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Olin Hall, Cornell University, Ithaca, New York 14853, United States
| | - Fernando A Escobedo
- Robert Frederick Smith School of Chemical and Biomolecular Engineering, Olin Hall, Cornell University, Ithaca, New York 14853, United States
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Lamellar Orientation of a Block Copolymer via an Electron-Beam Induced Polarity Switch in a Nitrophenyl Self-Assembled Monolayer or Si Etching Treatments. QUANTUM BEAM SCIENCE 2020. [DOI: 10.3390/qubs4020019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Directed self-assembly (DSA) was investigated on self-assembled monolayers (SAMs) chemically modified by electron beam (EB) irradiation, which is composed of 6-(4-nitrophenoxy) hexane-1-thiol (NPHT). Irradiating a NPHT by EB could successfully induce the orientation and selective patterning of block copolymer domains. We clarified that spatially-selective lamellar orientations of polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) could be achieved by a change of an underlying SAM. The change of an underlying SAM is composed of the transition of an NO2 group to an NH2 group, which is induced by EB. The modification in the polarity of different regions of the SAM with EB lithography controlled the lamellar orientation of PS-b-PMMA. The reduction of the NPHT SAM plays an important role in the orientation of block copolymer. This method might significantly simplify block copolymer DSA processes when it is compared to the conventional DSA process. By investigating the lamellae orientation with EB, it is clarified that only suitable annealing temperatures and irradiation doses lead to the vertical orientation. We also fabricated pre-patterned Si substrates by EB lithographic patterning and reactive ion etching (RIE). DSA onto such pre-patterned Si substrates was proven to be successful for subdivision of the lithographic patterns into line and space patterns.
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4
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Chambers LC, Huang Y, Jack KS, Blakey I. Spatial control of the topography of photo-sensitive block copolymer thin films. Polym Chem 2019. [DOI: 10.1039/c9py00200f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Spatially controlling self-assembly of block copolymer thin films through photoinduced molecular interactions that significantly impact on the glass transition temperature.
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Affiliation(s)
- Lewis C. Chambers
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
| | - Yun Huang
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
| | - Kevin S. Jack
- Centre for Microscopy and Microanalysis
- The University of Queensland
- Brisbane
- Australia
| | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology
- The University of Queensland
- Brisbane
- Australia
- Centre for Microscopy and Microanalysis
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5
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Jin XS, Pang YY, Ji SX. From self-assembled monolayers to chemically patterned brushes: Controlling the orientation of block copolymer domains in films by substrate modification. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1800-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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6
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Sun YS, Chen YC, Liou JY, Su FJ. Film Instability of Amphiphilic Block Copolymer Thin Films Driven by Solvent Annealing and Drying. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ya-Sen Sun
- Department of Chemical and Materials Engineering; National Central University; Taoyuan 32001 Taiwan
| | - Yu-Chung Chen
- Department of Chemical and Materials Engineering; National Central University; Taoyuan 32001 Taiwan
| | - Jiun-You Liou
- Department of Chemical and Materials Engineering; National Central University; Taoyuan 32001 Taiwan
| | - Fan Jun Su
- Department of Chemical and Materials Engineering; National Central University; Taoyuan 32001 Taiwan
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7
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Shelton CK, Epps TH. Decoupling Substrate Surface Interactions in Block Polymer Thin Film Self-Assembly. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00833] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Cameron K. Shelton
- Department of Chemical & Biomolecular Engineering and ‡Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Thomas H. Epps
- Department of Chemical & Biomolecular Engineering and ‡Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States
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8
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Zhang P, Wang Z, Huang H, He T. Direct Observation of the Relief Structure Formation in the Nearly Symmetric Poly(styrene)-block-poly(ε-caprolactone) Diblock Copolymer Thin Film. Macromolecules 2012. [DOI: 10.1021/ma301531a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Zhang
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Graduate
School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People’s Republic
of China
| | - Zongbao Wang
- Ningbo Key Laboratory
of Polymer
Materials, Ningbo Institute of Material Technology and Engineering, Ningbo 315201, People’s Republic
of China
| | - Haiying Huang
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Graduate
School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People’s Republic
of China
| | - Tianbai He
- State Key Laboratory of Polymer
Physics and Chemistry, Changchun Institute of Applied Chemistry, Graduate
School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People’s Republic
of China
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9
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Zhang P, Huang H, He T, Hu Z. Long-Range Ordered Crystallization Structure in the Micromolded Diblock Copolymer Thin Film. ACS Macro Lett 2012; 1:1007-1011. [PMID: 35607026 DOI: 10.1021/mz3002758] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Confined crystallization of the micromolded poly(butadiene)-block-poly(ε-caprolactone) (PB-b-PCL) diblock copolymer thin film was studied in this work. The long-range regular ordering of the PCL crystal with crystallographic b-axis parallel to the long-axis of the channel was detected, as indicated by the electron diffraction and grazing-incidence X-ray diffraction experimental results. This preferential crystallographic orientation is mainly because that PCL block crystallization was readily influenced by the geometric effect, then, the fast-growth direction (crystallographic b-axis) was forced to extend along the long-axis of the channel to grow long. Moreover, the substrate induced ordering of the block copolymer restricted the "in-plane" molecular diffusion in the residual layer, and cross-channel crystallization was precluded. Hence, micromolding seems to be a promising method for tailoring the nanoscale crystallization of block copolymer in thin films.
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Affiliation(s)
- Peng Zhang
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Haiying Huang
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Tianbai He
- State Key Laboratory
of Polymer Physics and Chemistry, Changchun Institute
of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People's
Republic of China
| | - Zhijun Hu
- Center for Soft
Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou 215006, People's
Republic of China
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10
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Tsarkova L, Sevink GJA, Krausch G. Nanopattern Evolution in Block Copolymer Films: Experiment, Simulations and Challenges. COMPLEX MACROMOLECULAR SYSTEMS I 2010. [DOI: 10.1007/12_2010_54] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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11
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Ji S, Liu CC, Son JG, Gotrik K, Craig GSW, Gopalan P, Himpsel FJ, Char K, Nealey PF. Generalization of the Use of Random Copolymers To Control the Wetting Behavior of Block Copolymer Films. Macromolecules 2008. [DOI: 10.1021/ma801861h] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengxiang Ji
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Chi-Chun Liu
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Jeong Gon Son
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Kevin Gotrik
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Gordon S. W. Craig
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Padma Gopalan
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - F. J. Himpsel
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Kookheon Char
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
| | - Paul F. Nealey
- Departments of Chemical and Biological Engineering, Physics, and Materials Science and Engineering, University of Wisconsin, Madison, Wisconsin 53706 and Department of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea 400-004
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12
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del Campo A, Arzt E. Fabrication Approaches for Generating Complex Micro- and Nanopatterns on Polymeric Surfaces. Chem Rev 2008; 108:911-45. [PMID: 18298098 DOI: 10.1021/cr050018y] [Citation(s) in RCA: 379] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Aránzazu del Campo
- Max-Planck-Institut für Metallforschung, Heisenbergstraβe 3, 70569 Stuttgart, Germany
| | - Eduard Arzt
- Max-Planck-Institut für Metallforschung, Heisenbergstraβe 3, 70569 Stuttgart, Germany
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13
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Horvat A, Knoll A, Krausch G, Tsarkova L, Lyakhova KS, Sevink GJA, Zvelindovsky AV, Magerle R. Time Evolution of Surface Relief Structures in Thin Block Copolymer Films. Macromolecules 2007. [DOI: 10.1021/ma071107a] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Horvat
- Physikalische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - A. Knoll
- Physikalische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - G. Krausch
- Physikalische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - L. Tsarkova
- Physikalische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
| | - K. S. Lyakhova
- Polymer Physics, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands
| | - G. J. A. Sevink
- Soft Condensed Matter Group, Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands
| | - A. V. Zvelindovsky
- Centre for Materials Science, Department of Physics, Astronomy and Mathematics, University of Central Lancashire, Preston, PR1 2HE, United Kingdom
| | - R. Magerle
- Chemische Physik, Technische Universität Chemnitz, 09107 Chemnitz, Germany
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14
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Structure and Dynamics of Cylinder Forming Block Copolymers in Thin Films. NANOSTRUCTURED SOFT MATTER 2007. [DOI: 10.1007/978-1-4020-6330-5_8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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15
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Baralia GG, Duwez AS, Nysten B, Jonas AM. Kinetics of exchange of alkanethiol monolayers self-assembled on polycrystalline gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:6825-9. [PMID: 16008392 DOI: 10.1021/la050245v] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We report on the exchange between a hydrophilic thiol (11-mercapto-1-undecanol) in a liquid or gas phase and a hydrophobic thiol (dodecanethiol) of similar length self-assembled on a polycrystalline gold surface for a wide range of temperatures and times. The molecular composition of the mixed monolayers is determined by the static water contact angle and X-ray photoelectron spectroscopy measurements. Atomic force microscopy in lateral force mode is used to characterize the molecular domains at the nanometer level. The exchange first occurs rapidly at the gold grain boundaries, with an activation energy of about 66 +/- 4 kJ/mol. Then, boundaries of ordered thiol domains are progressively replaced, and the exchange is slowed because only regions of increasing perfection are left untouched. Higher temperatures lead to faster kinetics of replacement and the removal of larger amounts of the original thiol. No significant difference could be detected between exchange occurring in an ethanol solution or in the gas phase, and the initial rate of exchange was found to be similar for the displacement of dodecanethiol by 11-mercapto-1-undecanol molecules and for the converse displacement.
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Affiliation(s)
- Gabriel G Baralia
- Unité de Physique et de Chimie des Hauts Polymères and Research Center on Micro- and Nanoscopic Materials and Electronic Devices, Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium
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16
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Fu J, Cong Y, Li J, Luan B, Pan C, Yang Y, Li B, Han Y. Hole Nucleation and Growth Induced by Crystallization and Microphase Separation of Thin Semicrystalline Diblock Copolymer Films. Macromolecules 2004. [DOI: 10.1021/ma0357366] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jun Fu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Yang Cong
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Jian Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Bin Luan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Caiyuan Pan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Yuming Yang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Binyao Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
| | - Yanchun Han
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China, and Department of Material Science and Engineering, University of Science & Technology of China, Hefei 230026, P. R. China
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Granick S, Kumar SK, Amis EJ, Antonietti M, Balazs AC, Chakraborty AK, Grest GS, Hawker C, Janmey P, Kramer EJ, Nuzzo R, Russell TP, Safinya CR. Macromolecules at surfaces: Research challenges and opportunities from tribology to biology. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/polb.10669] [Citation(s) in RCA: 144] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Lee SH, Kang H, Kim YS, Char K. Hierarchical Surface Topography in Block Copolymer Thin Films Induced by Residual Solvent. Macromolecules 2003. [DOI: 10.1021/ma025793j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seung-Heon Lee
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Huiman Kang
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Youn Sang Kim
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Kookheon Char
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
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19
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Segalman RA, Schaefer KE, Fredrickson GH, Kramer EJ, Magonov S. Topographic Templating of Islands and Holes in Highly Asymmetric Block Copolymer Films. Macromolecules 2003. [DOI: 10.1021/ma025879c] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rachel A. Segalman
- Departments of Chemical Engineering and Materials, University of California, Santa Barbara, California 93106-5050
| | - Kathleen E. Schaefer
- Departments of Chemical Engineering and Materials, University of California, Santa Barbara, California 93106-5050
| | - Glenn H. Fredrickson
- Departments of Chemical Engineering and Materials, University of California, Santa Barbara, California 93106-5050
| | - Edward J. Kramer
- Departments of Chemical Engineering and Materials, University of California, Santa Barbara, California 93106-5050
| | - Sergei Magonov
- Digital Instruments-Veeco Metrology Group, Santa Barbara, California 93117
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20
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Yang XM, Peters RD, Nealey PF. Imaging the Substrate/Film Interface of Thin Films of Diblock Copolymers on Chemically Patterned Surfaces. Macromolecules 2002. [DOI: 10.1021/ma0111966] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao M. Yang
- Department of Chemical Engineering and Center for Nanotechnology, University of Wisconsin, Madison, Wisconsin 53706
| | - Richard D. Peters
- Department of Chemical Engineering and Center for Nanotechnology, University of Wisconsin, Madison, Wisconsin 53706
| | - Paul F. Nealey
- Department of Chemical Engineering and Center for Nanotechnology, University of Wisconsin, Madison, Wisconsin 53706
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Peters RD, Yang XM, Nealey PF. Morphology of Thin Films of Diblock Copolymers on Surfaces Micropatterned with Regions of Different Interfacial Energy. Macromolecules 2002. [DOI: 10.1021/ma011003e] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Richard D. Peters
- Department of Chemical Engineering and Center for Nanotechnology, University of Wisconsin, Madison, Wisconsin 53706
| | - Xiao M. Yang
- Department of Chemical Engineering and Center for Nanotechnology, University of Wisconsin, Madison, Wisconsin 53706
| | - Paul F. Nealey
- Department of Chemical Engineering and Center for Nanotechnology, University of Wisconsin, Madison, Wisconsin 53706
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22
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Lee SH, Kang H, Cho J, Kim YS, Char K. Dual Morphology of Islands and Fractal Holes in Block Copolymer Thin Films. Macromolecules 2001. [DOI: 10.1021/ma010899k] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seung-Heon Lee
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Huiman Kang
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Jinhan Cho
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Youn Sang Kim
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
| | - Kookheon Char
- School of Chemical Engineering and Institute of Chemical Processes, Seoul National University, Seoul 151-744, Korea
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23
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Gusev AA. Numerical Identification of the Potential of Whisker- and Platelet-Filled Polymers. Macromolecules 2001. [DOI: 10.1021/ma001979b] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrei A. Gusev
- Institute of Polymers, Department of Materials, ETH-Zentrum, CNB D93, Universitätsstrasse 6, 8092 Zürich, Switzerland
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25
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Yang XM, Peters RD, Nealey PF, Solak HH, Cerrina F. Guided Self-Assembly of Symmetric Diblock Copolymer Films on Chemically Nanopatterned Substrates. Macromolecules 2000. [DOI: 10.1021/ma001326v] [Citation(s) in RCA: 127] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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