51
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Ramírez-Hernández A, Suh HS, Nealey PF, de Pablo JJ. Control of Directed Self-Assembly in Block Polymers by Polymeric Topcoats. Macromolecules 2014. [DOI: 10.1021/ma500411q] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Abelardo Ramírez-Hernández
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Institute
for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Hyo Seon Suh
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Institute
for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Paul F. Nealey
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Institute
for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Juan J. de Pablo
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Institute
for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
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52
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Sarukhanyan E, De Nicola A, Roccatano D, Kawakatsu T, Milano G. Spontaneous insertion of carbon nanotube bundles inside biomembranes: A hybrid particle-field coarse-grained molecular dynamics study. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.01.057] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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53
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Welling U, Müller M, Shalev H, Tsori Y. Block Copolymer Ordering in Cylindrical Capacitors. Macromolecules 2014. [DOI: 10.1021/ma4021888] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- U. Welling
- Institut für Theoretische Physik, Georg-August-Universität, 37077 Göttingen, Germany
| | - M. Müller
- Institut für Theoretische Physik, Georg-August-Universität, 37077 Göttingen, Germany
| | - H. Shalev
- Department of Chemical Engineering and The Ilse Katz Institute for
Nanoscale Science and Technology, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel
| | - Y. Tsori
- Department of Chemical Engineering and The Ilse Katz Institute for
Nanoscale Science and Technology, Ben-Gurion University of the Negev, 84105 Beer-Sheva, Israel
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54
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Nikoubashman A, Register RA, Panagiotopoulos AZ. Sequential Domain Realignment Driven by Conformational Asymmetry in Block Copolymer Thin Films. Macromolecules 2014. [DOI: 10.1021/ma402526q] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Arash Nikoubashman
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United Sates
| | - Richard A. Register
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United Sates
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55
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De Nicola A, Hezaveh S, Zhao Y, Kawakatsu T, Roccatano D, Milano G. Micellar drug nanocarriers and biomembranes: how do they interact? Phys Chem Chem Phys 2014; 16:5093-105. [DOI: 10.1039/c3cp54242d] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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56
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Müller M, Sun DW. Directing the self-assembly of block copolymers into a metastable complex network phase via a deep and rapid quench. PHYSICAL REVIEW LETTERS 2013; 111:267801. [PMID: 24483814 DOI: 10.1103/physrevlett.111.267801] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Indexed: 06/03/2023]
Abstract
The free-energy landscape of self-assembling block copolymer systems is characterized by a multitude of metastable minima. Using particle-based simulations of a soft, coarse-grained model, we explore opportunities to reproducibly direct the spontaneous ordering of these self-assembling systems into a metastable complex network morphology--specifically, Schoen's I-WP periodic minimal surface--starting from a highly unstable state that is generated by a rapid expansion. This process-directed self-assembly provides an alternative to fine-tuning molecular architecture or blending for fabricating complex network structures. Comparing our particle-based simulation results to recently developed free-energy techniques, we critically assess their ability to predict spontaneous formation and highlight the importance of nonequilibrium molecular conformations in the starting state and the local conservation of density.
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Affiliation(s)
- Marcus Müller
- Institut für Theoretische Physik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - De-Wen Sun
- Institut für Theoretische Physik, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
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57
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Nikoubashman A, Register RA, Panagiotopoulos AZ. Self-Assembly of Cylinder-Forming Diblock Copolymer Thin Films. Macromolecules 2013. [DOI: 10.1021/ma400867s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Arash Nikoubashman
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544,
United States
| | - Richard A. Register
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544,
United States
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58
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Milano G, Kawakatsu T, De Nicola A. A hybrid particle–field molecular dynamics approach: a route toward efficient coarse-grained models for biomembranes. Phys Biol 2013; 10:045007. [DOI: 10.1088/1478-3975/10/4/045007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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59
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Ramírez-Hernández A, Detcheverry FA, Peters BL, Chappa VC, Schweizer KS, Müller M, de Pablo JJ. Dynamical Simulations of Coarse Grain Polymeric Systems: Rouse and Entangled Dynamics. Macromolecules 2013. [DOI: 10.1021/ma400526v] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Abelardo Ramírez-Hernández
- Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne,
Illinois 60439, United States
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - François A. Detcheverry
- Institut Lumière Matière, UMR5306 Université
Lyon 1-CNRS, Université de Lyon,
69622 Villeurbanne, France
| | - Brandon L. Peters
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Verónica C. Chappa
- Institut für Theoretische
Physik, Georg-August-Universität, 37077 Göttingen, Germany
| | - Kenneth S. Schweizer
- Department of Materials Science
and Engineering, University of Illinois, Urbana, Illinois 61801, United
States
| | - Marcus Müller
- Institut für Theoretische
Physik, Georg-August-Universität, 37077 Göttingen, Germany
| | - Juan J. de Pablo
- Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne,
Illinois 60439, United States
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
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60
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Gross C, Paul W. Modeling diblock copolymer melts with a soft quadrumer model: Bulk behavior and directed self-assembly. POLYMER SCIENCE SERIES C 2013. [DOI: 10.1134/s1811238213050019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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61
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Borówko M, Rżysko W, Sokołowski S, Sokołowska Z, Usatenko Z. Stretching tethered polymer chains: density functional approach. J Chem Phys 2013; 138:204707. [PMID: 23742500 DOI: 10.1063/1.4807086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We propose application of density functional theory to calculate the force acting on a selected segment of a tethered polymer chain that leads to stretching the chain. The density functional allows one to determine the effects due to the presence of other chains and solvent molecules. For high and moderate solvent densities the plot of the force versus the distance of the segment from the surface exhibits oscillatory behavior that has not been predicted by other approaches.
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Affiliation(s)
- M Borówko
- Department for the Modelling of Physico-Chemical Processes, MCS University, 20031 Lublin, Poland
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62
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Chen H, Kim Y, Alexander-Katz A. Lattice Boltzmann method for multiscale self-consistent field theory simulations of block copolymers. J Chem Phys 2013; 138:104123. [DOI: 10.1063/1.4794922] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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63
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Liu CC, Ramírez-Hernández A, Han E, Craig GSW, Tada Y, Yoshida H, Kang H, Ji S, Gopalan P, de Pablo JJ, Nealey PF. Chemical Patterns for Directed Self-Assembly of Lamellae-Forming Block Copolymers with Density Multiplication of Features. Macromolecules 2013. [DOI: 10.1021/ma302464n] [Citation(s) in RCA: 182] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Chi-Chun Liu
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Abelardo Ramírez-Hernández
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637,
United States
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue,
Argonne, Illinois 60439, United States
| | - Eungnak Han
- Department
of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Gordon S. W. Craig
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Yasuhiko Tada
- Hitachi Research Laboratory, Hitachi Ltd., Hitachi City, Ibaraki 319-1292, Japan
| | - Hiroshi Yoshida
- Hitachi Research Laboratory, Hitachi Ltd., Hitachi City, Ibaraki 319-1292, Japan
| | - Huiman Kang
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Shengxiang Ji
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy
of Sciences, 5625 Renmin Street,
Changchun 130022, China
| | - Padma Gopalan
- Department
of Materials Science
and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Juan J. de Pablo
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637,
United States
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue,
Argonne, Illinois 60439, United States
| | - Paul F. Nealey
- Institute for Molecular Engineering, The University of Chicago, Chicago, Illinois 60637,
United States
- Materials
Science Division, Argonne National Laboratory, 9700 South Cass Avenue,
Argonne, Illinois 60439, United States
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64
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Steinmüller B, Müller M, Hambrecht KR, Bedrov D. Random Block Copolymers: Structure, Dynamics, and Mechanical Properties in the Bulk and at Selective Substrates. Macromolecules 2012. [DOI: 10.1021/ma302151z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Birger Steinmüller
- Institut für
Theoretische
Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Marcus Müller
- Institut für
Theoretische
Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Keith R. Hambrecht
- Department of Materials Science
and Engineering, University of Utah, Salt
Lake City, Utah 84112, United States
| | - Dmitry Bedrov
- Department of Materials Science
and Engineering, University of Utah, Salt
Lake City, Utah 84112, United States
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65
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Peters BL, Ramírez-Hernández A, Pike DQ, Müller M, de Pablo JJ. Nonequilibrium Simulations of Lamellae Forming Block Copolymers under Steady Shear: A Comparison of Dissipative Particle Dynamics and Brownian Dynamics. Macromolecules 2012. [DOI: 10.1021/ma301541f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Brandon L. Peters
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Abelardo Ramírez-Hernández
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Darin Q. Pike
- Sandia National Laboratories, Albuquerque, New Mexico 87185, United
States
| | - Marcus Müller
- Institut für
Theoretische
Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Juan J. de Pablo
- Department of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
- Institute for Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United
States
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66
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Ganesan V, Kumar NA, Pryamitsyn V. Blockiness and Sequence Polydispersity Effects on the Phase Behavior and Interfacial Properties of Gradient Copolymers. Macromolecules 2012. [DOI: 10.1021/ma301136y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - N. Arun Kumar
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Victor Pryamitsyn
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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67
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Ramírez-Hernández A, Liu G, Nealey PF, de Pablo JJ. Symmetric Diblock Copolymers Confined by Two Nanopatterned Surfaces. Macromolecules 2012. [DOI: 10.1021/ma2026594] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abelardo Ramírez-Hernández
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706,
United States
| | - Guoliang Liu
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706,
United States
| | - Paul F. Nealey
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706,
United States
| | - Juan J. de Pablo
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706,
United States
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68
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Bryk P, MacDowell LG. Solvation effects for polymers at an interface: A hybrid self-consistent field–density functional theory approach. J Chem Phys 2011; 135:204901. [DOI: 10.1063/1.3662139] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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69
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Van Lehn RC, Alexander-Katz A. Communication: Lateral phase separation of mixed polymer brushes physisorbed on planar substrates. J Chem Phys 2011; 135:141106. [DOI: 10.1063/1.3653937] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Reid C. Van Lehn
- Department of Materials Science and Engineering, MIT, Cambridge, Massachusetts 02139, USA
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, MIT, Cambridge, Massachusetts 02139, USA
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70
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Nagpal U, Kang H, Craig GSW, Nealey PF, de Pablo JJ. Pattern dimensions and feature shapes of ternary blends of block copolymer and low molecular weight homopolymers directed to assemble on chemically nanopatterned surfaces. ACS NANO 2011; 5:5673-5682. [PMID: 21661763 DOI: 10.1021/nn201335v] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Ternary blends of cylinder-forming polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) and low molecular weight PS and PMMA were directed to assemble on chemically patterned surfaces with hexagonal symmetry. The chemical patterns consisted of strongly PMMA preferential spots, patterned by electron-beam lithography, in a matrix of PS. The spot-to-spot spacing of the chemical patterns (L(s)) was varied between 0.9L(0) and 1.1L(0), where L(0) is the cylinder-to-cylinder spacing of the pure block copolymer in bulk. The homopolymer volume fraction of the blends (ϕ(H)) was varied between 0 and 0.3. In addition, chemical patterns were formed with selected spots missing from the perfect hexagonal array, such that the interpolation of domains between patterned spots could be examined on patterns where the polymer/pattern feature density ranged from 1:1 to 4:1. The assemblies were analyzed with top-down SEM, from which orientational order parameter (OP(o)) values were determined. The SEM analysis was complemented by Monte Carlo simulations, which offered insights into the shapes of the assembled cylindrical domains. It was found that, in comparison to pure block copolymer, adding homopolymer increased the range of L(s) values over which assemblies with high OP(o) values could be achieved for 1:1 assemblies. However, the corresponding simulations showed that in the 1:1 assemblies the shape of the cylinders was more uniform for pure block copolymer than for blends. In the case of the 4:1 assemblies, the range of L(s) values over which assemblies with high OP(o) values could be achieved was the same for all values of ϕ(H) tested, but the domains of the pure block copolymer had a more uniform shape. Overall, the results provided insights into the blend composition to be used to meet technological requirements for directed assembly with density multiplication.
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Affiliation(s)
- Umang Nagpal
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
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71
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Nagpal U, Detcheverry FA, Nealey PF, de Pablo JJ. Morphologies of Linear Triblock Copolymers from Monte Carlo Simulations. Macromolecules 2011. [DOI: 10.1021/ma200330f] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Umang Nagpal
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin, 53706-1691, USA
| | | | - Paul F. Nealey
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin, 53706-1691, USA
| | - Juan J. de Pablo
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin, 53706-1691, USA
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72
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Léonforte F, Servantie J, Pastorino C, Müller M. Molecular transport and flow past hard and soft surfaces: computer simulation of model systems. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:184105. [PMID: 21508476 DOI: 10.1088/0953-8984/23/18/184105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The equilibrium and flow of polymer films and drops past a surface are characterized by the interface and surface tensions, viscosity, slip length and hydrodynamic boundary position. These parameters of the continuum description are extracted from molecular simulations of coarse-grained models. Hard, corrugated substrates are modelled by a Lennard-Jones solid while polymer brushes are studied as prototypes of soft, deformable surfaces. Four observations are discussed. (i) If the surface becomes strongly attractive or is coated with a brush, the Navier boundary condition fails to describe the effect of the surface independently of the strength and type of the flow. This failure stems from the formation of a boundary layer with an effective, higher viscosity. (ii) In the case of brush-coated surfaces, flow induces a cyclic, tumbling motion of the tethered chain molecules. Their collective motion gives rise to an inversion of the flow in the vicinity of the grafting surfaces and leads to strong, non-Gaussian fluctuations of the molecular orientations. The flow past a polymer brush cannot be described by Brinkman's equation. (iii) The hydrodynamic boundary condition is an important parameter for predicting the motion of polymer droplets on a surface under the influence of an external force. Their steady-state velocity is dictated by a balance between the power that is provided by the external force and the dissipation. If there is slippage at the liquid-solid interface, the friction at the solid-liquid interface and the viscous dissipation of the flow inside the drop will be the dominant dissipation mechanisms; dissipation at the three-phase contact line appears to be less important on a hard surface. (iv) On a soft, deformable substrate like a polymer brush, we observe a lifting-up of the three-phase contact line. Controlling the grafting density and the incompatibility between the brush and the polymer liquid we can independently tune the softness of the surface and the contact angle and thereby identify the parameters for maximizing the deformation at the three-phase contact.
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Affiliation(s)
- F Léonforte
- Institut für Theoretische Physik, Georg-August-Universität, 37077 Göttingen, Germany
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73
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Vogiatzis GG, Voyiatzis E, Theodorou DN. Monte Carlo simulations of a coarse grained model for an athermal all-polystyrene nanocomposite system. Eur Polym J 2011. [DOI: 10.1016/j.eurpolymj.2010.09.017] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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74
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Müller M, Steinmüller B, Daoulas KC, Ramírez-Hernández A, de Pablo JJ. Polymer–solid contacts described by soft, coarse-grained models. Phys Chem Chem Phys 2011; 13:10491-502. [DOI: 10.1039/c0cp02868a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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75
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Husowitz B, Monson PA. Modeling Mesoscale Structure in Comb Polymer Materials for Anhydrous Proton Transport Applications. Macromolecules 2010. [DOI: 10.1021/ma101441g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- B. Husowitz
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - P. A. Monson
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States
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76
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Ramírez-Hernández A, Detcheverry FA, de Pablo JJ. Numerical simulation of Gaussian chains near hard surfaces. J Chem Phys 2010; 133:064905. [DOI: 10.1063/1.3457153] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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77
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Kriksin YA, Khalatur PG, Khokhlov AR. Effect of the supporting pattern on the orientation of hexagonal morphology in thin films of diblock copolymers. POLYMER SCIENCE SERIES A 2010. [DOI: 10.1134/s0965545x10060118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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78
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Effect of conformational asymmetry on the self-assembly of amphiphilic diblock copolymer in selective solvent. Polym Bull (Berl) 2010. [DOI: 10.1007/s00289-010-0265-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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79
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Stoykovich MP, Daoulas KC, Müller M, Kang H, de Pablo JJ, Nealey PF. Remediation of Line Edge Roughness in Chemical Nanopatterns by the Directed Assembly of Overlying Block Copolymer Films. Macromolecules 2010. [DOI: 10.1021/ma902494v] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mark P. Stoykovich
- Department of Chemical and Biological Engineering, University of Colorado—Boulder, Boulder, Colorado 80309
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80
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Wang J, Müller M. Memory effects of diblock copolymer brushes and mixed brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1291-1303. [PMID: 19807084 DOI: 10.1021/la902438e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Memory effects of microphase segregation in diblock copolymer brushes and binary mixed homopolymer brushes exposed to solvents of different quality and selectivity are studied using Single-Chain-in-Mean-Field (SCMF) simulations. We gauge these memory effects by a fluctuation memory measure, reflecting the correlation between the quenched fluctuations of grafting points and the microphase-separated morphology, and a domain memory measure, quantifying the correlation between surface morphologies during cyclic exposure to different solvents. The fluctuation and domain memory measures are closely correlated, and both of them have their root in the broken translational symmetry of the distribution of grafting points. They become stronger upon increasing the fluctuations of the grafting points. The effects of solvent quality and selectivity, grafting density, and composition of brushes on the memory measures are discussed.
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Affiliation(s)
- Jiafang Wang
- Institut für Theoretische Physik, Georg-August Universität, D-37077 Göttingen, Germany
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81
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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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82
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Li W, Jiang W. Effect of Solvent Molecular Size on the Self-Assembly of Amphiphilic Diblock Copolymer in Selective Solvent. MACROMOL THEOR SIMUL 2009. [DOI: 10.1002/mats.200900033] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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83
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Wang J, Müller M. Microphase Separation of Mixed Polymer Brushes: Dependence of the Morphology on Grafting Density, Composition, Chain-Length Asymmetry, Solvent Quality, and Selectivity. J Phys Chem B 2009; 113:11384-402. [DOI: 10.1021/jp903161j] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jiafang Wang
- Institut für Theoretische Physik, Georg-August Universität, D-37077 Göttingen, Germany, and State key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Marcus Müller
- Institut für Theoretische Physik, Georg-August Universität, D-37077 Göttingen, Germany, and State key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
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84
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Wang J, Müller M. Microphase Separation of Diblock Copolymer Brushes in Selective Solvents: Single-Chain-in-Mean-Field Simulations and Integral Geometry Analysis. Macromolecules 2009. [DOI: 10.1021/ma8026047] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jiafang Wang
- Institut für Theoretische Physik, Georg-August Universität, D-37077 Göttingen, Germany
| | - Marcus Müller
- Institut für Theoretische Physik, Georg-August Universität, D-37077 Göttingen, Germany
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85
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Müller M, Daoulas KC, Norizoe Y. Computing free energies of interfaces in self-assembling systems. Phys Chem Chem Phys 2009; 11:2087-97. [DOI: 10.1039/b818111j] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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86
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Müller M, Daoulas KC. Single-chain dynamics in a homogeneous melt and a lamellar microphase: A comparison between Smart Monte Carlo dynamics, slithering-snake dynamics, and slip-link dynamics. J Chem Phys 2008; 129:164906. [DOI: 10.1063/1.2997345] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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87
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Perez M, Lame O, Leonforte F, Barrat JL. Polymer chain generation for coarse-grained models using radical-like polymerization. J Chem Phys 2008; 128:234904. [DOI: 10.1063/1.2936839] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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88
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Detcheverry FA, Kang H, Daoulas KC, Müller M, Nealey PF, de Pablo JJ. Monte Carlo Simulations of a Coarse Grain Model for Block Copolymers and Nanocomposites. Macromolecules 2008. [DOI: 10.1021/ma702514v] [Citation(s) in RCA: 186] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- François A. Detcheverry
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691, and Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Huiman Kang
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691, and Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Kostas Ch. Daoulas
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691, and Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Marcus Müller
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691, and Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Paul F. Nealey
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691, and Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
| | - Juan J. de Pablo
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706-1691, and Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
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89
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Müller M, Daoulas KC. Calculating the free energy of self-assembled structures by thermodynamic integration. J Chem Phys 2008; 128:024903. [DOI: 10.1063/1.2818565] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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90
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Stoykovich MP, Kang H, Daoulas KC, Liu G, Liu CC, de Pablo JJ, Müller M, Nealey PF. Directed self-assembly of block copolymers for nanolithography: fabrication of isolated features and essential integrated circuit geometries. ACS NANO 2007; 1:168-175. [PMID: 19206647 DOI: 10.1021/nn700164p] [Citation(s) in RCA: 286] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Self-assembling block copolymers are of interest for nanomanufacturing due to the ability to realize sub-100 nm dimensions, thermodynamic control over the size and uniformity and density of features, and inexpensive processing. The insertion point of these materials in the production of integrated circuits, however, is often conceptualized in the short term for niche applications using the dense periodic arrays of spots or lines that characterize bulk block copolymer morphologies, or in the long term for device layouts completely redesigned into periodic arrays. Here we show that the domain structure of block copolymers in thin films can be directed to assemble into nearly the complete set of essential dense and isolated patterns as currently defined by the semiconductor industry. These results suggest that block copolymer materials, with their intrinsically advantageous self-assembling properties, may be amenable for broad application in advanced lithography, including device layouts used in existing nanomanufacturing processes.
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Affiliation(s)
- Mark P Stoykovich
- Department of Chemical and Biological Engineering and Center for Nanotechnology, University of Wisconsin, Madison, WI 53706, USA
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91
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Park SM, Craig GSW, La YH, Solak HH, Nealey PF. Square Arrays of Vertical Cylinders of PS-b-PMMA on Chemically Nanopatterned Surfaces. Macromolecules 2007. [DOI: 10.1021/ma0702344] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sang-Min Park
- Department of Chemical and Biological Engineering and Center for Nanotechnology, University of WisconsinMadison, Madison, Wisconsin 53706, and Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Villigen/PSI, Switzerland CH-5232
| | - Gordon S. W. Craig
- Department of Chemical and Biological Engineering and Center for Nanotechnology, University of WisconsinMadison, Madison, Wisconsin 53706, and Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Villigen/PSI, Switzerland CH-5232
| | - Young-Hye La
- Department of Chemical and Biological Engineering and Center for Nanotechnology, University of WisconsinMadison, Madison, Wisconsin 53706, and Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Villigen/PSI, Switzerland CH-5232
| | - Harun H. Solak
- Department of Chemical and Biological Engineering and Center for Nanotechnology, University of WisconsinMadison, Madison, Wisconsin 53706, and Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Villigen/PSI, Switzerland CH-5232
| | - Paul F. Nealey
- Department of Chemical and Biological Engineering and Center for Nanotechnology, University of WisconsinMadison, Madison, Wisconsin 53706, and Laboratory for Micro- and Nanotechnology, Paul Scherrer Institut, Villigen/PSI, Switzerland CH-5232
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92
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Müller M, Daoulas K. Ordering of Diblock Copolymer Materials on Patterned Substrates: a Single Chain in Mean Field Simulation Study. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/masy.200750607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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93
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Santer S, Kopyshev A, Donges J, Rühe J, Jiang X, Zhao B, Müller M. Memory of surface patterns in mixed polymer brushes: simulation and experiment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:279-85. [PMID: 17190515 DOI: 10.1021/la0629577] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The correlation between the morphology of mixed polymer brushes and fluctuations of the grafting points is investigated by single-chain-in-mean-field simulations and experiments. The local topography of two types of mixed polystyrene-polymethylmethacrylate (PS-PMMA) brushes that differ in their modes of attachment has been studied during repeated microphase separation into laterally structured and homogeneous morphologies upon changing solvents. In the first type of brush (conventional), each of the surface-attached initiator groups starts the growth of either a PS or a PMMA chain in a random fashion. In the second case (Y-shaped mixed brushes), two chains of different types are attached to the same anchor group on the substrate. Whereas in the first case statistical fluctuations of the chemical composition occur on a local scale, such composition fluctuations are strongly suppressed in the latter case. The microphase-separated morphology is similar in both cases, but Y-shaped brushes exhibit a significantly weaker domain memory than do conventional PS-PMMA mixed brushes. The results of the experiment are compared with simulations, and a simple phenomenological argument and qualitative agreement are found. The observations demonstrate that small fluctuations in the grafting points are amplified by the microphase separation and nucleate the location of the domains in the mixed brush.
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Affiliation(s)
- Svetlana Santer
- Department of Microsystems Engineering (IMTEK), University of Freiburg, Georges-Koehler-Allee 103, D-79110 Freiburg, Germany.
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94
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Exploring the manufacturability of using block copolymers as resist materials in conjunction with advanced lithographic tools. ACTA ACUST UNITED AC 2007. [DOI: 10.1116/1.2801888] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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95
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Daoulas KC, Müller M. Single chain in mean field simulations: Quasi-instantaneous field approximation and quantitative comparison with Monte Carlo simulations. J Chem Phys 2006; 125:184904. [PMID: 17115792 DOI: 10.1063/1.2364506] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The description of fluctuations by single chain in mean field (SCMF) simulations is discussed and the results of this particle-based self-consistent field technique are quantitatively compared to Monte Carlo simulations of the same discretized Edwards-Hamiltonian providing exact reference data. In SCMF simulations one studies a large ensemble of noninteracting molecules subjected to real, external fields by Monte Carlo simulations. The external fields approximate nonbonded, instantaneous interactions between molecules. In the self-consistent mean field theory the external fields are static and fluctuation effects are ignored. In SCMF simulations, the external fields fluctuate since they are frequently recalculated from the instantaneous density distribution of the ensemble of molecules. In the limit of infinitely high density or instantaneous update of the external fields, the SCMF simulation method accurately describes long-wavelength fluctuations. At high but finite updating frequency the accuracy depends on the discretization of the model. The accuracy is illustrated by studying the single chain structure and intermolecular correlations in polymer melts, and fluctuation effects on the order-disorder transition of symmetric diblock copolymers.
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Affiliation(s)
- Kostas Ch Daoulas
- Institut für Theoretische Physik, Georg-August Universität, 37077 Göttingen, Germany
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