Publications

2025

Sarah E. Gonzalez, Michael S. Dimitriyev, A. Patrick Cachine, Elisabetta A. Matsumoto
“Pulling apart the mechanisms that lead to jammed knitted fabrics”
(submitted)
[arXiv]

Mingqiu Hu, Hong-Gyu Seong, Michael S. Dimitriyev, Weiguo Hu, Zhan Chen, Xuchen Gan, Gregory M. Grason, Todd Emrick, Thomas P. Russell
“Backbone Stitching in Bottlebrush Copolymer Mesodomains and the Impact of Side Chain Crystallization”
Macromolecules XX, XX, XXXX-XXXX (2025)
DOI: 10.1021/acs.macromol.4c02589
[journal]

2024

Alexander R. Klotz, Caleb J. Anderson, Michael S. Dimitriyev.
“Chirality Effects in Molecular Chainmail”
Soft Matter 20, 7044-7058 (2024)
DOI: 10.1039/D4SM00729H
[journal] [arXiv]

The three chainmail topologies studied in the paper, with minimum rope-length structures shown below.

Demi E. Moed, Michael S. Dimitriyev, Benjamin R. Greenvall, Gregory M. Grason, Alfred J. Crosby.
“Mesoscale Polymer Arrays: High Aspect Ratio Surface Structures and Their Digital Reconstruction”
Soft Matter 20, 8023–8035 (2024)
DOI: 10.1039/D4SM00324A
[journal] [arXiv]

Déborah Feller, Marius Otten, Michael S. Dimitriyev, Matthias Karg.
“Non-close-packed plasmonic Bravais lattices through a fluid interface-assisted colloidal assembly and transfer process“.
Colloid and Polymer Science (2024)
DOI: 10.1007/s00396-024-05285-4
[journal] [supplementary code]

Carlos L. Bassani, Greg van Anders, Uri Banin, Dmitry Baranov, Qian Chen, Marjolein Dijkstra, Michael S. Dimitriyev, Efi Efrati, Jordi Faraudo, Oleg Gang, Nicola Gaston, Ramin Golestanian, G. Ivan Guerrero-Garcia, Michael Gruenwald, Amir Haji-Akbari, Maria Ibáñez, Matthias Karg, Tobias Kraus, Byeongdu Lee, Reid C. Van Lehn, Robert J. Macfarlane, Bortolo M. Mognetti, Arash Nikoubashman, Saeed Osat, Oleg V. Prezhdo, Grant M. Rotskoff, Leonor Saiz, An-Chang Shi, Sara Skrabalak, Ivan I. Smalyukh, Mario Tagliazucchi, Dmitri V. Talapin, Alexei V. Tkachenko, Sergei Tretiak, David Vaknin, Asaph Widmer-Cooper, Gerard C. L. Wong, Xingchen Ye, Shan Zhou, Eran Rabani, Michael Engel, and Alex Travesset.
“Nanocrystal Assemblies: Current Advances and Open Problems“.
ACS Nano 18, 23, 14791–14840 (2024)
DOI: 10.1021/acsnano.3c10201
[journal]

Michael S. Dimitriyev, Xueyan Feng, Edwin L. Thomas, Gregory M. Grason.
“Non-affinity of liquid networks and bicontinuous mesophases“.
Physical Review Letters 132, 218201 (2024)
DOI: 10.1103/PhysRevLett.132.218201
[journal] [arXiv]

3D voxelized rendering of polystyrene and polydimethylsiloxane domains in a double gyroid that has formed in conditions that yield a triclinic unit cell. The skeletonization of this data is shown, with strut lengths colored according to length.

Krishma Singal, Michael S. Dimitriyev, Sarah E. Gonzalez, A. Patrick Cachine, Sam Quinn, Elisabetta Matsumoto.
“Programming Mechanics in Knitted Materials, Stitch by Stitch“.
Nature Communications 15, 2622 (2024)
DOI: 10.1038/s41467-024-46498-z
[journal] [arXiv] [supplementary code]

Renderings of knitted swatches, constructed from simulations that minimize the elastica energy of yarn. The patterns shown are stockinette/jersey (blue), garter (orange), rib (green), and seed (purple).

Benjamin R. Greenvall, Michael S. Dimitriyev, Gregory M. Grason.
“Chain trajectories, domain shapes and terminal boundaries in block copolymers“.
Journal of Polymer Science 62 (16), 3737 (2024) (*first published 2023)
DOI: 10.1002/pol.20230748
[journal] [arXiv] [supplementary code]

Schematic showing the polar order parameter field for a linear diblock melt that has formed a stretched verion of a hexagonal cylinder phase, along with integral curves representing mean chain trajectories. Also shown are 3D renderings of an A15 unit cell with extracted terminal boundaries and a set of integral curves.

2023 and before

Michael S. Dimitriyev, Abhiram Reddy, Gregory M. Grason.
“Medial Packing, Frustration, and Competing Network Phases in Strongly Segregated Block Copolymers“.
Macromolecules 56, 17, 7184–7202 (2023)
DOI: 10.1021/acs.macromol.3c01098
[journal] [arXiv]

Renders showing the medial surfaces of a double gyroid with a single mesoatom unit pulled out and sliced open, revealing internal organization of polymer chains. Also shown: the intermaterial dividing surface, colored according to hot (red) and cold (blue) spots of chain streching costs, interfacial costs, and free energy per chain.

Xueyan Feng, Michael S. Dimitriyev, Edwin L. Thomas.
“Soft, malleable double diamond twin“.
PNAS 120 (4) (2023)
DOI: 10.1073/pnas.2213441120
[journal] [arXiv]

3D reconstruction of a section of double diamond twin boundary, showing a clear mirror plane reflecting one network (colored red) and the presence of new "molecular mesoatom" units for the other network (blue) along the mirror plane.

Abhiram Reddy, Michael S. Dimitriyev, Gregory M. Grason.
“Medial packing and elastic asymmetry stabilize the double-gyroid in block copolymers“.
Nature Communications 13, 2629 (2022)
DOI: 10.1038/s41467-022-30343-2
[journal] [arXiv] [supplementary code]

Artistic rendering of a double gyroid unit cell with medial surfaces sticking out and representations of polymer chains sandwiched between the medial surfaces.

Michael S. Dimitriyev, Gregory M. Grason.
“End-exclusion zones in strongly stretched, molten polymer brushes of arbitrary shape“.
J. Chem. Phys. 155, 224901 (2021)
DOI: 10.1063/5.0073245
[journal] [arXiv] [supplementary code]

Paper figure: A cartoon rendering of a random distribution of polymer chains on a curved surface with an end-exclusion zone. The monomer distributions are represented by the width of each trumpet bell-shaped region. The distribution of chain ends is also shown on the right.

Michael S. Dimitriyev, Ya-Wen Chang, Paul M. Goldbart, Alberto Fernández-Nieves.
“Topical Review: Swelling thermodynamics and phase transitions of polymer gels“.
Nano Futures 3 042001 (2019)
DOI: 10.1088/2399-1984/ab45d5
[journal] [arXiv]

Paper figure: a phase diagram of neutral polymer gels showing distinct swollen and deswollen phases, along with conditions for coexistence and a critical point.

Ya-Wen Chang, Michael S. Dimitriyev, Anton Souslov, Svetoslav V. Nikolov, Samantha M. Marquez, Alexander Alexeev, Paul M. Goldbart, Alberto Fernández-Nieves.
“Extreme thermodynamics with polymer gel tori: Harnessing thermodynamic instabilities to induce large-scale deformations“.
Phys. Rev. E 98 020501(R) (2018)
DOI: 10.1103/PhysRevE.98.020501
[journal] [arXiv]

Paper figure: a buckling diagram for a toroid with internal stresses.