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Updated: Jun 16, 2025

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
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蓝相液晶的定向晶体对称性转换通过反向电收缩

Tsung-Hsien Lin1, Duan-Yi Guo2, Chun-Wei Chen3

  • 1Department of Photonics, National Sun Yat-sen University, Kaohsiung, 804201, Taiwan. jameslin@mail.nsysu.edu.tw.

Nature communications
|August 15, 2024
PubMed
概括

研究人员开发了一种快速的方法,以创建具有不同对称性的大型,稳定的蓝相液晶 (BPLC) 晶体. 这一突破克服了以前的制造限制,使光子学和生物化学的新应用成为可能.

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相关概念视频

Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
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