4.8 Article

Soft crystal martensites: An in situ resonant soft x-ray scattering study of a liquid crystal martensitic transformation

Journal

SCIENCE ADVANCES
Volume 6, Issue 13, Pages -

Publisher

AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aay5986

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Funding

  1. U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division
  2. DOE Office of Science [DE-AC02-06CH11357]
  3. MRSEC Shared User Facilities at the University of Chicago [NSF DMR-1420709]
  4. Advanced Light Source, a DOE Office of Science User Facility [DE-AC02-05CH11231]

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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.

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