abstract

• Liquid crystal blue phases (BPs) are three-dimensional soft crystals with unit cell sizes orders of magnitude larger than those of classic, atomic crystals. The directed self-assembly of BPs on chemically patterned surfaces uniquely enables detailed in situ resonant soft x-ray scattering measurements of martensitic phase transformations in these systems. The formation of twin lamellae is explicitly identified during the BPII-to-BPI transformation, further corroborating the martensitic nature of this transformation and broadening the analogy between soft and atomic crystal diffusionless phase transformations to include their strain-release mechanisms. Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

authors

• De Pablo J.J.
• Dolan J.A.
• Jin H.M.
• Joseph Kline R.
• Li X.
• Martínez González José Adrián
• Nealey P.F.
• Ren J.
• Zhou C.

publication date

• 2020-01-01

funding provided via

• Argonne National Laboratory, ANL: DE-AC02-06CH11357  Grant
• Basic Energy Sciences, BES  Grant
• Division of Materials Sciences and Engineering, DMSE  Grant
• Materials Research Science and Engineering Center, Harvard University, MRSEC  Grant
• National Institute of Standards and Technology, NIST  Grant
• National Science Foundation, NSF: DE-AC02-05CH11231, DMR-1420709  Grant
• Office of Science, SC  Grant
• U.S. Department of Energy, USDOE  Grant
• University of Chicago  Grant

published in

• Science Advances  Journal

keywords

• Liquid crystals; X ray scattering; X rays; Atomic crystals; Directed self-assembly; Martensitic phase transformations; Orders of magnitude; Patterned surface; Soft crystals; Strain release; Unit cell size; Martensitic transformations; adult; article; cell size; liquid crystal; radiation scattering

Digital Object Identifier (DOI)

• 10.1126/sciadv.aay5986

PubMed ID

• 32258402

start page

end page

volume

• 6

issue

• 13