公开(公告)号：US20230397612A1

公开(公告)日：2023-12-14

申请号：US18096538

申请日：2023-01-12

Applicant: South China Normal University

Inventor： Sichun ZHENG ,  Yiguang LIN ,  Huijun JI

IPC: A01N63/60 ,  C12N15/113 ,  A01P7/04 ,  A01N25/30 ,  A01N25/06

CPC classification number: A01N63/60 ,  C12N15/113 ,  A01P7/04 ,  A01N25/30 ,  A01N25/06 ,  C12N2310/141 ,  C12N2330/51

Abstract: A miRNA, derivative and use thereof are disclosed. The miRNA comprises a nucleic acid sequence as shown in SEQ ID NO. 1 or a nucleic acid sequence obtained by modifying, substituting, deleting or adding at least one base to the nucleic acid sequence as shown in SEQ ID NO. 1. According to the disclosure, the used miRNA is derived from Glycine max, is safe to human beings and has no effect on a rice plant; and the derivative of the miRNA obtained by modification also retains the effects and characteristics of the miRNA, can be used as a novel insecticide for safely and effectively preventing and controlling brown planthopper, can be directly used on a transgenic plant, and has a practical application value for brown planthopper prevention and control.

公开(公告)号：US11215811B2

公开(公告)日：2022-01-04

申请号：US16478185

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu Zhou ,  Rui Zhou ,  Hongwei Jiang ,  Yuanyuan Guo

IPC: G02B26/00 ,  B05C11/10 ,  G02B1/06 ,  G09G3/34 ,  H01L21/67

Abstract: Disclosed is a drying-wetting separated filling method and a filling apparatus for an electrowetting display device. The filling method comprises filling a non-polar solution into pixel grids on a lower substrate of an electrowetting display device in air, and filling a polar solution to immediately cover the non-polar solution filled after filling the non-polar solution into the pixel grids. Compared with filling the non-polar solution into the polar solution, directly filling the non-polar solution in air has better filling uniformity, easier operation and control. With the method, the fillings of the polar solution and the non-polar solution are easy, having a higher filling efficiency, and no air bubble residue.

公开(公告)号：US11209711B2

公开(公告)日：2021-12-28

申请号：US17304135

申请日：2021-06-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu Zhou ,  Xiaowen Hu ,  Wei Zhao ,  Haitao Sun

IPC: G02F1/137 ,  G02F1/139

Abstract: A multi-stable electroresponsive smart window and preparation method thereof are disclosed. The multi-stable electroresponsive smart window comprises a first light transmitting conductive substrate, a parallel orientation layer, a positive polymer stabilized cholesteric texture layer, a positive cholesteric texture layer and a second light transmitting conductive substrate disposed in stack successively. The multi-stable electroresponsive smart window of the present disclosure can realize a diversified light transmission state such as colored and transparent state, colored and blur state, colorless and blur state, and colorless and transparent state by changing the magnitude of the access voltage, thereby satisfying the various demands in people's work and life. In addition, the multi-stable electroresponsive smart window of the present disclosure has the characteristics of simple production, rich patterns, energy saving and environmental protection, which has good application prospects in the fields of window glass, home glass window and glass curtain wall, and the like.

公开(公告)号：US11168256B2

公开(公告)日：2021-11-09

申请号：US16604371

申请日：2018-10-10

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu Zhou ,  Xiaowen Hu ,  Wei Zhao ,  Weijie Zeng ,  Chun Ju ,  Lingling Shui

IPC: C09K19/40 ,  C09K19/58 ,  C09K19/52 ,  G02F1/13 ,  C07C53/126

Abstract: A liquid crystal mixture and a temperature-responsive infrared reflection device made by using the liquid crystal mixture containing potassium laurate. Infrared light can pass through the device within a non-working temperature range, and a chiral dopant enables potassium laurate to form a cholesteric phase within a working temperature range. The birefringence value of the potassium laurate gradually increases with the increase of temperature between 12.5° C. and 26° C., so that the infrared reflection bandwidth of the device constantly increases. The birefringence value of the potassium laurate gradually decreases with the increase of temperature between 26° C. and 54.5° C., so that the infrared reflection bandwidth of the device constantly decreases. The infrared reflection bandwidth of the infrared reflection device can vary with temperature by adjusting the proportions of the ingredients of the liquid crystal mixture containing potassium laurate.

公开(公告)号：US20210302776A1

公开(公告)日：2021-09-30

申请号：US17304135

申请日：2021-06-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Xiaowen HU ,  Wei ZHAO ,  Haitao SUN

IPC: G02F1/137 ,  G02F1/139

Abstract: A multi-stable electroresponsive smart window and preparation method thereof are disclosed. The multi-stable electroresponsive smart window comprises a first light transmitting conductive substrate, a parallel orientation layer, a positive polymer stabilized cholesteric texture layer, a positive cholesteric texture layer and a second light transmitting conductive substrate disposed in stack successively. The multi-stable electroresponsive smart window of the present disclosure can realize a diversified light transmission state such as colored and transparent state, colored and blur state, colorless and blur state, and colorless and transparent state by changing the magnitude of the access voltage, thereby satisfying the various demands in people's work and life. In addition, the multi-stable electroresponsive smart window of the present disclosure has the characteristics of simple production, rich patterns, energy saving and environmental protection, which has good application prospects in the fields of window glass, home glass window and glass curtain wall, and the like.

公开(公告)号：US20200339717A1

公开(公告)日：2020-10-29

申请号：US16498727

申请日：2018-12-28

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Laurens DE HAAN ,  Zixuan DENG

IPC: C08F220/06 ,  C08F2/44 ,  C08F2/50 ,  C08F220/34 ,  C08F230/02 ,  C09D143/02 ,  C09D133/02 ,  C09D133/14 ,  C09K19/38

Abstract: A water-responsive interpenetrating polymer network, a preparation method and use thereof, are disclosed in the present disclosure. The water-responsive interpenetrating polymer network comprises an interpenetrating polymer network formed by a cholesteric liquid crystal polymer and a polyionic liquid; wherein the cholesteric liquid crystal polymer is formed by polymerization of a liquid crystal mixture; and the polyionic liquid contains a hydrophilic group or is a hydrophilic salt. The interpenetrating polymer network of the present disclosure is water responsive without needs of activation with an alkaline solution, which simplifies the preparation process, and it has stable water responsiveness performance after prolonged and/or repeated exposure to water. The water-responsive interpenetrating polymer network of the present disclosure can be used to prepare light reflective coatings and reflective devices, and has higher commercial value.

公开(公告)号：US20200073159A1

公开(公告)日：2020-03-05

申请号：US16493633

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Xiaowen HU ,  Nan LI

IPC: G02F1/1337 ,  G02F1/1341 ,  G02F1/1334

Abstract: A method for preparing an infrared reflective device, including: preparing a first and second conductive light-transmitting substrates which are arranged opposite to each other; preparing a parallel alignment layer on a respective surface of each conductive light-transmitting substrate facing to the other; preparing a liquid crystal cell using the two conductive light-transmitting substrates; mixing a negative liquid crystal, a chiral dopant, a liquid crystal monomer and a photoinitiator to obtain a liquid crystal mixture; injecting the liquid crystal mixture into the liquid crystal cell; connecting the first conductive light-transmitting substrate to a negative pole of a power supply assembly, connecting the second conductive light-transmitting substrate to a positive pole of the power supply assembly; and carrying out ultraviolet irradiation to polymerize the liquid crystal monomer so as to form a polymer network with a gradient density distribution in a direction perpendicular to the conductive light-transmitting substrates.

公开(公告)号：US20200026113A1

公开(公告)日：2020-01-23

申请号：US16491086

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  Academy of Shenzhen Guohua Optoelectronics

Inventor： Guofu ZHOU ,  Hao LI ,  Nan LI

IPC: G02F1/137 ,  G02F1/166 ,  G02F1/1333

Abstract: An electrically controlled smart window, which includes two light-transmitting substrates arranged oppositely, a power supply component and an in-between light-adjusting area. Hereinto the light-adjusting area is divided into a matrix of light-adjusting units by pixel wall(s), and every units are closely arranged in a grid shape. To the power supply component, an electrode is connected with the pixel wall, and another is localized on the center of light-adjusting unit and did with the light-transmitting substrate. Both surface-charged liquid crystal polymer particles and conductive filling liquid are filled into the medium between the two light-transmitting substrates. According to the present disclosure, cholesteric liquid crystal polymer microparticles with specific reflection band and surface charges are used as basic reflectors, thereby achieving the significant advantages of being easy to manufacture, low cost, and stable performance, without causing interference to electromagnetic signals.

公开(公告)号：US20190312723A1

公开(公告)日：2019-10-10

申请号：US16314858

申请日：2017-12-20

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Banghong Guo ,  Min Hu ,  Panpan Zhang

IPC: H04L9/08 ,  H04J14/02

Abstract: A system includes an Alice transmitting terminal, a wavelength division multiplexing (WDM) unit and a plurality of Bob terminals for receiving a plurality of photons of different wavelengths; the Alice terminal is connected with the plurality of Bob terminals by the WDM unit; the Alice terminal includes a multi-wavelength laser generation device, an attenuator, a first polarization beam splitter, a first beam combiner, a phase modulator, a first polarization controller and a second polarization controller; the WDM unit includes a wavelength selection device; each Bob terminal includes a second polarization controller, a third polarization controller, a fourth polarization controller, a third polarization beam splitter, a fourth polarization beam splitter, a second beam combiner, a third beam combiner, a first photon detector, a second photon detector, a third photon detector and a fourth photon detector.

公开(公告)号：US10310354B2

公开(公告)日：2019-06-04

申请号：US15752867

申请日：2016-01-07

Applicant: ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS ,  SOUTH CHINA NORMAL UNIVERSITY ,  SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD.

Inventor： Guofu Zhou ,  Hao Wu ,  Fahong Li ,  Robert Andrew Hayes

IPC: G09F9/37 ,  G09G3/34 ,  G02B26/00 ,  G02F1/167

Abstract: Disclosed is an electrofluidic support plate and a method for preparing the same, and an electrofluidic device comprising the support plate. The method comprises the following steps of: providing a substrate which has a surface provided with an electrode layer; arranging a first amorphous fluoropolymer layer on the surface of the substrate, and carrying out hydrophilic modification on a surface of the amorphous fluoropolymer layer; arranging pixel walls on the amorphous fluoropolymer layer after hydrophilic modification; arranging a second amorphous fluoropolymer layer which is a hydrophobic layer; the second amorphous fluoropolymer layer covering all surfaces of the pixel walls and a groove area encircled by the pixel walls; filling the groove area encircled by the pixel walls with a protective material; removing the second amorphous fluoropolymer layer not covered by the protective material and on a top of the pixel walls; and removing the protective material.