(27) Y. Rokhlenko, P. W. Majewski, S. R. Larson, P. Gopalan, K. G. Yager, C. O. Osuji. Implications of Grain Size Variation in Magnetic Field Alignment of Block Copolymer Blends. ACS Macro Letters 2017, 404-409. DOI: 10.1021/acsmacrolett.7b00036
(26) Atikur Rahman, Pawel W. Majewski, Gregory Doerk and Kevin G Yager. Non-native three-dimensional block copolymers. Nature Communications 2016, 7, 13988. DOI: 10.1038/ncomms13988
(25) Pawel W Majewski and Kevin G Yager. Rapid Ordering of Block Copolymer Thin Films. Journal of Physics: Condensed Matter 2016, 28 (40), 403002. DOI: 10.1088/0953-8984/28/40/403002
Spatiotemporal character of various DSA methods.
(24) Majewski, P. W.; Yager, K. G. Reordering Transitions during Annealing of Block Copolymer Cylinder Phases. Soft Matter 2016, 12 (1), 281–294 DOI: 10.1039/C5SM02441B
SEM of cylinder-forming BCP film during the reorientation transition.
(23) Rokhlenko, Y.; Gopinadhan, M.; Osuji, C. O.; Zhang, K.; O’Hern, C. S.; Larson, S. R.; Gopalan, P.; Majewski, P. W.; Yager, K. G. Magnetic Alignment of Block Copolymer Microdomains by Intrinsic Chain Anisotropy. Phys. Rev. Lett. 2015, 115 (25), 258302. DOI: 10.1103/PhysRevLett.115.258302
Magnetic alignment of low-molecular PS-b-4VP lamellar block copolymer.
(22) Majewski, P. W.; Yager, K. G. Latent Alignment in Pathway-Dependent Ordering of Block Copolymer Thin Films. Nano Lett. 2015, 15 (8), 5221–5228 DOI: 10.1021/acs.nanolett.5b01463.
BCP Ordering pathways
(21) Majewski, P. W.; Rahman, A.; Black, C. T.; Yager, K. G. Arbitrary Lattice Symmetries via Block Copolymer Nanomeshes. Nat Commun 2015, 6 DOI: 10.1038/ncomms8448.
Hexagonal tri-layered Pt nanowire mesh templated from a BCP.
(20) Majewski, P. W.; Yager, K. G. Block Copolymer Response to Photothermal Stress Fields. Macromolecules 2015, 48 (13), 4591–4598 DOI: 10.1021/acs.macromol.5b00955.
Photothermal shearing of block-copolymer thin films.
(19) Majewski, P. W.; Yager, K. G. Millisecond Ordering of Block Copolymer Films via Photothermal Gradients. ACS Nano 2015, 9 (4), 3896–3906 DOI: 10.1021/nn5071827.
Millisecond ordering of BCP films.
(18) Yager, K. G.; Majewski, P. W. Metrics of Graininess: Robust Quantification of Grain Count from the Non-Uniformity of Scattering Rings. Journal of Applied Crystallography 2014, 47 (6), 1855–1865 DOI: 10.1107/S1600576714020822.
Grain-size quantification by analysis of azimuthal scattering distribution.
(17) Gopinadhan, M.; Deshmukh, P.; Choo, Y.; Majewski, P. W.; Bakajin, O.; Elimelech, M.; Kasi, R. M.; Osuji, C. O. Thermally Switchable Aligned Nanopores by Magnetic-Field Directed Self-Assembly of Block Copolymers. Adv. Mater. 2014, 26 (30), 5148–5154 DOI: 10.1002/adma.201401569.
Thermally-switchable BCP membrane.
(16) Tran, H.; Gopinadhan, M.; Majewski, P. W.; Shade, R.; Steffes, V.; Osuji, C. O.; Campos, L. M. Monoliths of Semiconducting Block Copolymers by Magnetic Alignment. ACS Nano 2013, 7 (6), 5514–5521 DOI: 10.1021/nn401725a.
Magnetically-ordered BCP-perylene conjugates.
(15) Pelligra, C. I.; Majewski, P. W.; Osuji, C. O. Large Area Vertical Alignment of ZnO Nanowires in Semiconducting Polymer Thin Films Directed by Magnetic Fields. Nanoscale 2013 DOI: 10.1039/C3NR03119E.
Large area magnetic alignment of Co-doped ZnO nanowires.
(14) Majewski, P. W.; Gopinadhan, M.; Osuji, C. O. Understanding Anisotropic Transport in Self-Assembled Membranes and Maximizing Ionic Conductivity by Microstructure Alignment. Soft Matter 2013, 9 (29), 7106–7116 DOI: 10.1039/C3SM50320H.
Anisotropic ion transport in self-assembled membranes.
(13) Gopinadhan, M.; Majewski, P. W.; Choo, Y.; Osuji, C. O. Order-Disorder Transition and Alignment Dynamics of a Block Copolymer Under High Magnetic Fields by In Situ X-Ray Scattering. Phys. Rev. Lett. 2013, 110 (7), 78301 DOI: 10.1103/PhysRevLett.110.078301.
Alignment dynamics of a BCP under high magnetic fields.
(12) Zhang, S.; Pelligra, C. I.; Keskar, G.; Jiang, J.; Majewski, P. W.; Taylor, A. D.; Ismail-Beigi, S.; Pfefferle, L. D.; Osuji, C. O. Directed Self-Assembly of Hybrid Oxide/Polymer Core/Shell Nanowires with Transport Optimized Morphology for Photovoltaics. Adv. Mater. 2012, 24 (1), 82–87 DOI: 10.1002/adma.201103708.
Directed self-assembly of hybrid oxide/polymer core/shell nanowires.
(11) Majewski, P. W.; Gopinadhan, M.; Osuji, C. O. Magnetic Field Alignment of Block Copolymers and Polymer Nanocomposites: Scalable Microstructure Control in Functional Soft Materials. J. Polym. Sci. B Polym. Phys. 2012, 50 (1), 2–8 DOI: 10.1002/polb.22382.
Field –aligned block-copolymer membrane.
(10) Kijewska, K.; Blanchard, G. J.; Szlachetko, J.; Stolarski, J.; Kisiel, A.; Michalska, A.; Maksymiuk, K.; Pisarek, M.; Majewski, P.; Krysiński, P.; Mazur, M. Photopolymerized Polypyrrole Microvessels. Chem. Eur. J. 2012, 18 (1), 310–320 DOI: 10.1002/chem.201101400.
Photo-polymerized polypyrrole microvessels.
(9) Gopinadhan, M.; Majewski, P. W.; Beach, E. S.; Osuji, C. O. Magnetic Field Alignment of a Diblock Copolymer Using a Supramolecular Route. ACS Macro Lett. 2012, 1 (1), 184–189 DOI: 10.1021/mz2001059.
Magnetically-aligned BCP complexed by small liquid crystal molecules.
(8) Zhang, S.; Pelligra, C. I.; Keskar, G.; Majewski, P. W.; Ren, F.; Pfefferle, L. D.; Osuji, C. O. Liquid Crystalline Order and Magnetocrystalline Anisotropy in Magnetically Doped Semiconducting ZnO Nanowires. ACS Nano 2011, 5 (10), 8357–8364 DOI: 10.1021/nn203070d.
Micrographs of field-aligned magnetically doped semiconducting ZnO nanowires.
(7) Zhang, S.; Majewski, P. W.; Keskar, G.; Pfefferle, L. D.; Osuji, C. O. Lyotropic Self-Assembly of High-Aspect-Ratio Semiconductor Nanowires of Single-Crystal ZnO. Langmuir 2011, 27 (18), 11616–11621 DOI: 10.1021/la200703u.
Liquid crystalline textures in lyotropic self-assembled ZnO nanowires.
(6) Majewski, P. W.; Osuji, C. O. Controlled Alignment of Lamellar Lyotropic Mesophases by Rotation in a Magnetic Field. Langmuir 2010, 26, 8737–8742 DOI: 10.1021/la100285j.
Alignment of lamellar lyotropic mesophases by rotation in a magnetic field.
(5) Majewski, P. W.; Gopinadhan, M.; Jang, W.-S.; Lutkenhaus, J. L.; Osuji, C. O. Anisotropic Ionic Conductivity in Block Copolymer Membranes by Magnetic Field Alignment. J. Am. Chem. Soc. 2010, 132 (49), 17516–17522 DOI: 10.1021/ja107309p.
Anisotropic ionic conductivity in block copolymer membranes.
(4) Gopinadhan, M.; Majewski, P. W.; Osuji, C. O. Facile Alignment of Amorphous Poly(ethylene Oxide) Microdomains in a Liquid Crystalline Block Copolymer Using Magnetic Fields: Toward Ordered Electrolyte Membranes. Macromolecules 2010, 43, 3286–3293 DOI: 10.1021/ma9026349.
Schematic representation of X-ray scattering patterns under orthogonal angles of incidence.
(3) Majewski, P. W.; Osuji, C. O. Non-Degenerate Magnetic Alignment of Self-Assembled Mesophases. Soft Matter 2009, 5 (18), 3417–3421 DOI: 10.1039/B910705C.
2-D X-ray scattering pattern of magnetically-aligned lamellar mesophase.
(2) Majewski, P.; Krysiński, P. Synthesis, Surface Modifications, and SizeSorting of Mixed Nickel–Zinc Ferrite Colloidal Magnetic Nanoparticles. Chemistry – A European Journal 2008, 14 (26), 7961–7968 DOI: 10.1002/chem.200800369.
Surface modifications and size‐sorting of nickel–zinc ferrite nanoparticles.
(1) Naughton, B. T.; Majewski, P.; Clarke, D. R. Magnetic Properties of Nickel–Zinc Ferrite Toroids Prepared from Nanoparticles. Journal of the American Ceramic Society 2007, 90 (11), 3547–3553 DOI: 10.1111/j.1551-2916.2007.01981.x.
Toroids prepared from nickel–zinc ferrite nanoparticles.