Jin Hyeong Min, Li Xiao, Dolan James A, Kline R Joseph, Martínez-González José A, Ren Jiaxing, Zhou Chun, de Pablo Juan J, Nealey Paul F
Pritzker School of Molecular Engineering, The University of Chicago, Chicago, IL 60637, USA.
Neutron Science Center, Korea Atomic Energy Research Institute (KAERI), Daejeon 34057, Republic of Korea.
Sci Adv. 2020 Mar 27;6(13):eaay5986. doi: 10.1126/sciadv.aay5986. eCollection 2020 Mar.
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.
液晶蓝相（BPs）是三维软晶体，其晶胞尺寸比经典原子晶体的晶胞尺寸大几个数量级。BPs在化学图案化表面上的定向自组装独特地实现了对这些系统中马氏体相变的详细原位共振软X射线散射测量。在BPII到BPI的转变过程中明确识别出孪晶薄片的形成，进一步证实了这种转变的马氏体性质，并拓宽了软晶体和原子晶体无扩散相变之间的类比，使其包括它们的应变释放机制。
