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Liu Z, Liu YX, Yang Y, Li J. Template Design for Complex Block Copolymer Patterns Using a Machine Learning Method. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37335810 DOI: 10.1021/acsami.3c05018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
This study represents the first attempt to address the inverse design problem of the guiding template for directed self-assembly (DSA) patterns using solely machine learning methods. By formulating the problem as a multi-label classification task, the study shows that it is possible to predict templates without requiring any forward simulations. A series of neural network (NN) models, ranging from the basic two-layer convolutional neural network (CNN) to the large NN models (32-layer CNN with 8 residual blocks), have been trained using simulated pattern samples generated by thousands of self-consistent field theory (SCFT) calculations; a number of augmentation techniques, especially suitable for predicting morphologies, have been also proposed to enhance the performance of the NN model. The exact match accuracy of the model in predicting the template of simulated patterns was significantly improved from 59.8% for the baseline model to 97.1% for the best model of this study. The best model also demonstrates an excellent generalization ability in predicting the template for human-designed DSA patterns, while the simplest baseline model is ineffective in this task.
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Affiliation(s)
- Zhihan Liu
- The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yi-Xin Liu
- The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Yuliang Yang
- The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
| | - Jianfeng Li
- The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
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Weyman A, Mavrantzas VG, Öttinger HC. Direct calculation of the functional inverse of realistic interatomic potentials in field-theoretic simulations. J Chem Phys 2022; 156:224115. [PMID: 35705412 DOI: 10.1063/5.0090333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We discuss the functional inverse problem in field-theoretic simulations for realistic pairwise potentials such as the Morse potential (widely used in particle simulations as an alternative to the 12-6 Lennard-Jones one), and we propose the following two solutions: (a) a numerical one based on direct inversion on a regular grid or deconvolution and (b) an analytical one by expressing attractive and repulsive contributions to the Morse potential as higher-order derivatives of the Dirac delta function; the resulting system of ordinary differential equations in the saddle-point approximation is solved numerically with appropriate model-consistent boundary conditions using a Newton-Raphson method. For the first time, exponential-like, physically realistic pair interactions are analytically treated and incorporated into a field-theoretic framework. The advantages and disadvantages of the two approaches are discussed in detail in connection with numerical findings from test simulations for the radial distribution function of a monatomic fluid at realistic densities providing direct evidence for the capability of the analytical method to resolve structural features down to the Angstrom scale.
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Affiliation(s)
- Alexander Weyman
- Polymer Physics, Department of Materials, ETH Zürich, CH-8093 Zurich, Switzerland
| | - Vlasis G Mavrantzas
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, CH-8092 Zurich, Switzerland
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Serral M, Pinna M, Zvelindovsky AV, Avalos JB. Cell Dynamics Simulations of Sphere-Forming Diblock Copolymers in Thin Films on Chemically Patterned Substrates. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02314] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Maria Serral
- Department
d’Enginyeria Química, Universitat Rovira i Virgili, Tarragona, Av. dels Països Catalans, 26, 43007 Tarragona, Spain
| | - Marco Pinna
- School
of Mathematics and Physics, College of Science, University of Lincoln, Brayford Pool, Lincoln, Lincolnshire LN6 7TS, U.K
| | - Andrei V. Zvelindovsky
- School
of Mathematics and Physics, College of Science, University of Lincoln, Brayford Pool, Lincoln, Lincolnshire LN6 7TS, U.K
| | - Josep Bonet Avalos
- Department
d’Enginyeria Química, Universitat Rovira i Virgili, Tarragona, Av. dels Països Catalans, 26, 43007 Tarragona, Spain
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Komarov PV, Veselov IN, Khalatur PG. Self-organization of amphiphilic block copolymers in the presence of water: A mesoscale simulation. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Hannon AF, Ding Y, Bai W, Ross CA, Alexander-Katz A. Optimizing topographical templates for directed self-assembly of block copolymers via inverse design simulations. NANO LETTERS 2014; 14:318-25. [PMID: 24328687 DOI: 10.1021/nl404067s] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
An inverse design algorithm has been developed that predicts the necessary topographical template needed to direct the self-assembly of a diblock copolymer to produce a given complex target structure. The approach is optimized by varying the number of topographical posts, post size, and block copolymer volume fraction to yield a template solution that generates the target structure in a reproducible manner. The inverse algorithm is implemented computationally to predict post arrangements that will template two different target structures and the predicted templates are tested experimentally with a polydimethylsiloxane-b-polystyrene block copolymer. Simulated and experimental results show overall very good agreement despite the complexity of the patterns. The templates determined from the model can be used in developing simpler design rules for block copolymer directed self-assembly.
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Affiliation(s)
- Adam F Hannon
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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Rudov AA, Patyukova ES, Neratova IV, Khalatur PG, Posselt D, Papadakis CM, Potemkin II. Structural Changes in Lamellar Diblock Copolymer Thin Films upon Swelling in Nonselective Solvents. Macromolecules 2013. [DOI: 10.1021/ma400810u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Andrey A. Rudov
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian
Federation
- Institute of
Interactive Materials
Research, DWI an der RWTH, Aachen 52056,
Germany
| | - Elena S. Patyukova
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian
Federation
| | - Irina V. Neratova
- Institute for Advanced
Energy
Related Nanomaterials, University of Ulm, D-89069 Ulm, Germany
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden,
Germany
| | - Pavel G. Khalatur
- Institute for Advanced
Energy
Related Nanomaterials, University of Ulm, D-89069 Ulm, Germany
| | - Dorthe Posselt
- IMFUFA, Department
of Science,
Systems and Models, Roskilde University, P.O. Box 260, 4000 Roskilde, Denmark
| | - Christine M. Papadakis
- Technische Universität München, Physik-Department, Physik
weicher Materie, 85748 Garching, Germany
| | - Igor I. Potemkin
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian
Federation
- Institute of
Interactive Materials
Research, DWI an der RWTH, Aachen 52056,
Germany
- Institute for Advanced
Energy
Related Nanomaterials, University of Ulm, D-89069 Ulm, Germany
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Hannon AF, Gotrik KW, Ross CA, Alexander-Katz A. Inverse Design of Topographical Templates for Directed Self-Assembly of Block Copolymers. ACS Macro Lett 2013; 2:251-255. [PMID: 35581891 DOI: 10.1021/mz400038b] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A computational inverse design algorithm is presented that predicts the necessary topographical template to direct the self-assembly of a diblock copolymer thin film into a desired complex morphology. This topographical template is determined from the spatial configuration of a template that results in an energy minimum for the system. Degenerate solutions are accounted for by performing multiple simulations with random starting configurations of the topographical template and making a statistically weighted template that is tested using self-consistent field theory simulations. The final template is, thus, the inverse design solution of the desired block copolymer morphology. The results also yield nonintuitive post-configuration design principles.
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Affiliation(s)
- Adam F. Hannon
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Kevin W. Gotrik
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Caroline A. Ross
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
| | - Alfredo Alexander-Katz
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
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Xu Y, Feng J, Chen J, Xiang M, Song X, Zhu Y. Dissipative particle dynamics simulation of microphase separation behaviors in graft-diblock copolymer films. POLYMER SCIENCE SERIES A 2013. [DOI: 10.1134/s0965545x13030103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Rudov AA, Khalatur PG, Potemkin II. Perpendicular Domain Orientation in Dense Planar Brushes of Diblock Copolymers. Macromolecules 2012. [DOI: 10.1021/ma300890w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Andrey A. Rudov
- Physics Department, Moscow State University, Moscow 119991, Russian Federation
| | - Pavel G. Khalatur
- Institute for Advanced Energy Related Nanomaterials, Ulm D-89069, Germany
| | - Igor I. Potemkin
- Physics Department, Moscow State University, Moscow 119991, Russian Federation
- Institute for Advanced Energy Related Nanomaterials, Ulm D-89069, Germany
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Liu G, Detcheverry F, Ramírez-Hernández A, Yoshida H, Tada Y, de Pablo JJ, Nealey PF. Nonbulk Complex Structures in Thin Films of Symmetric Block Copolymers on Chemically Nanopatterned Surfaces. Macromolecules 2012. [DOI: 10.1021/ma202777s] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Guoliang Liu
- Department
of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - François Detcheverry
- LPMCN, Université de
Lyon, Université Lyon 1 and CNRS, UMR 5586, F-69622 Villeurbanne, France
| | - Abelardo Ramírez-Hernández
- Department
of Chemical and Biological
Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Hiroshi Yoshida
- Hitachi Research Laboratory, Hitachi, Ltd., Hitachi City, Ibaraki 319-1292, Japan
| | - Yasuhiko Tada
- Hitachi Research Laboratory, Hitachi, Ltd., Hitachi City, Ibaraki 319-1292, Japan
| | - Juan J. de Pablo
- 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
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Popov KI, Palyulin VV, Möller M, Khokhlov AR, Potemkin II. Surface induced self-organization of comb-like macromolecules. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2011; 2:569-84. [PMID: 22003463 PMCID: PMC3190627 DOI: 10.3762/bjnano.2.61] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 07/01/2011] [Indexed: 05/23/2023]
Abstract
We present a review of the theoretical and experimental evidence for the peculiar properties of comb copolymers, demonstrating the uniqueness of these materials among other polymer architectures. These special properties include an increase in stiffness upon increasing side-chain length, the spontaneous curvature of adsorbed combs, rod-globule transition, and specific intramolecular self-assembly. We also propose a theory of chemically heterogeneous surface nanopattern formation in ultrathin films of comblike macromolecules containing two different types (A and B) of incompatible side chains (so-called binary combs). Side chains of the binary combs are strongly adsorbed on a surface and segregated with respect to the backbone. The thickness of surface domains formed by the B side chains is controlled by the interaction with the substrate. We predict the stability of direct and inverse disc-, torus- and stripelike nanostructures. Phase diagrams of the film are constructed.
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Affiliation(s)
- Konstantin I Popov
- Physics Department, Moscow State University, Moscow 119991, Russian Federation
| | - Vladimir V Palyulin
- Physics Department, Moscow State University, Moscow 119991, Russian Federation
- Institute of Polymer Science, University of Ulm, 89069 Ulm, Germany
| | - Martin Möller
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen and DWI at the RWTH Aachen e.V., 52056 Aachen, Germany
| | - Alexei R Khokhlov
- Physics Department, Moscow State University, Moscow 119991, Russian Federation
- Institute of Polymer Science, University of Ulm, 89069 Ulm, Germany
| | - Igor I Potemkin
- Physics Department, Moscow State University, Moscow 119991, Russian Federation
- Institute of Polymer Science, University of Ulm, 89069 Ulm, Germany
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