公开(公告)号：US10203536B2

公开(公告)日：2019-02-12

申请号：US15316429

申请日：2014-06-05

Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zhigang Zheng

IPC: C09K19/00 ,  G02F1/1333 ,  C09K19/52 ,  C09K19/54 ,  C09K19/58 ,  C09K19/60 ,  G02F1/137 ,  C09B31/12 ,  C09K11/06 ,  G02F1/1334

Abstract: A photo-tunable liquid crystal composition may include a polymer matrix and a liquid crystal mixture dispersed within the polymer matrix. The liquid crystal mixture may include at least one achiral nematic liquid crystal material, at least sine photo-active chiral dopant, at least one photo-inactive chiral dopant, and at least one emissive dye. The composition may be fabricated in the form of an emulsion, a wet film, or a dry film. The dry film may be used in a photo-tunable liquid crystal film laser. The output wavelength of the photo-tunable liquid crystal film laser may be tuned by exposing the dry film to illumination having at least one wavelength at one or more transition wavelengths.

公开(公告)号：US09976081B2

公开(公告)日：2018-05-22

申请号：US14787589

申请日：2013-04-28

Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Zhigang Zheng

IPC: G02F1/1333 ,  C09K19/02 ,  C09K19/58 ,  G02F1/137 ,  C09K19/54

CPC classification number: C09K19/0275 ,  C09K19/542 ,  C09K19/586 ,  C09K19/588 ,  C09K2019/548 ,  G02F1/137 ,  G02F2001/13775 ,  G02F2001/13793

Abstract: A dual frequency liquid crystal may be stabilized in the blue phase by a polymer matrix to provide an improved blue phase temperature range having a magnitude of at least about 65° C. Polymer-stabilized, blue phase dual frequency liquid crystal compositions and methods for producing polymer-stabilized, blue phase dual frequency liquid crystals are disclosed.

公开(公告)号：US20220335443A1

公开(公告)日：2022-10-20

申请号：US17311378

申请日：2020-10-12

Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Weihong Zhu ,  Zhigang Zheng ,  Huijun Li ,  Honglong HU

IPC: G06Q30/00 ,  C09K9/02

Abstract: The present disclosure discloses a novel multi-stable and erasable anti-counterfeiting technology with controlled reflection color and the application thereof in optical coding. The method and use are characterized by high thermal stability and robust fatigue resistance, and the realization thereof relies on the material system composed of an intrinsic chiral diarylethene molecule based on steric hindrance ethene bridge and a liquid crystal (LC) material disclosed herein. The diarylethene based on steric hindrance ethene bridge has the following structural feature: The material system composed of a diarylethene compound based on steric hindrance ethene bridge and an LC can be prepared by a simple preparation process from cheap raw materials, can achieve a wide spectral color adjustment range, and has excellent thermal stability and fatigue resistance, which is expected to be further widely used in the fields of dual erasable anti-counterfeiting and optical information encoding with high thermal stability and strong fatigue resistance.