公开(公告)号：US20220356399A1

公开(公告)日：2022-11-10

申请号：US17732539

申请日：2022-04-29

Applicant: South China Normal University

Inventor： Tao Chen ,  Bo Yan ,  Jian Huang

IPC: C09K17/46 ,  B01J20/22 ,  B01J20/10 ,  B01J20/06 ,  B01J20/28 ,  B01J20/32 ,  B09C1/08

Abstract: A magnetic soil remediation agent for soil heavy metal pollution and a preparation method and application thereof are provided. The magnetic soil remediation agent is prepared by using remediation agent framework material and magnetic core material as raw materials, and heavy metal collector as modifier; said framework material is silicon dioxide activated by strong alkali; said magnetic core material comprises magnetic materials Fe3O4 and γ-Fe2O3; said modifier comprises ethylenediaminetetraacetic acid (EDTA, nitrilotriacetic acid trisodium salt (NTA, (S,S)-ethylenediamine-N,N-disuccinic acid trisodium salt (EDDS) and mercaptoethylamine. The remediation agent of the present invention can effectively passivate the heavy metals in the soil, reduce their available contents, and inhibit the absorption of heavy metals by plants.

公开(公告)号：US20220214298A1

公开(公告)日：2022-07-07

申请号：US17608973

申请日：2019-05-15

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Richard NOTZEL

IPC: G01N27/30 ,  H01L21/02

Abstract: Disclosed are an epitaxial wafer and a method of fabricating the same, and an electrochemical sensor, wherein the reference electrode comprises: a substrate (11); an InGaN layer (12) formed on a surface of the substrate (11) and having an In content between 20% and 60% so as to ensure that a transition from negatively charged surface states to positively charged surface states occurs within a composition range; and an InN layer (13) formed on a surface of the InGaN layer (12) facing away from the substrate (11) to act as a stabilization layer. The InGaN layer (12) with an In content between 20% and 60% allows generation of an electrochemical response independent of the concentration of a solution to be detected; and in addition, the InN layer (13) with a high density of intrinsic, positively charged surface states further improves the electrochemical stability of the reference electrode.

公开(公告)号：US11369627B2

公开(公告)日：2022-06-28

申请号：US16435677

申请日：2019-06-10

Applicant: South China Normal University

Inventor： Ruqiang Huang ,  Jinghui Wang ,  Qian Wang ,  Linlin Gao ,  Jingwen Zhang

IPC: A61K31/715 ,  A61P3/06 ,  C08B37/00

Abstract: The invention discloses a myrtle polysaccharide P1, the separation method thereof and the use in preparing hypolipidemic drugs therefor, wherein the P1 contains 6.74% of ribose, 1.73% of rhamnose, 60.06% of arabinose, 3.54% of xylose, 5.64% of mannose, 13.16% of glucose, and 9.13% of galactose. The experiment result shows that the myrtle polysaccharide P1 has a certain ability to bind cholate in vitro. Taking cholestyramine as a positive control and the binding rate of cholestyramine to each cholate as 100%, the relative binding rate of the myrtle polysaccharide P1 to sodium taurocholate, sodium glycocholate and sodium cholate was 25.28%, 44.56%, and 50.10%, respectively.

公开(公告)号：US20220190436A1

公开(公告)日：2022-06-16

申请号：US17605430

申请日：2020-10-14

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Weishan LI ,  Yucheng WEN ,  Huiyang CHEN ,  Jiawei CHEN ,  Yitong LU ,  Yanxia CHE

IPC: H01M50/426 ,  H01M50/449 ,  H01M10/0525 ,  H01M4/133 ,  H01M4/131 ,  H01M4/583 ,  H01M4/505 ,  H01M4/525

Abstract: Provided is a method for preparing a battery separator coating material, the method comprising: dissolving PVDF and a covalent organic backbone material in an organic solvent and stirring same until uniform. The mass ratio of the PVDF to the covalent organic backbone material to N-methylpyrrolidone is 20: (70-85):(5-10). When the material is applied to preparation of a lithium ion battery separator, the problem of metal dissolution when a transition metal oxide is used as a positive electrode material can be effectively solved. The prepared separator can effectively adsorb metal ions and prevent the metal ions from being deposited on a negative electrode during charging and discharging processes, such that the cycle performance of a transition metal oxide positive electrode material is improved.

公开(公告)号：US11143902B2

公开(公告)日：2021-10-12

申请号：US16491490

申请日：2017-11-15

Applicant: South China Normal University ,  Shenzhen Guohua Optoelectronics Co., Ltd. ,  G.H.S ADVANCED EQUIPMENT TECHNOLOGY CO., LTD.

Inventor： Guofu Zhou ,  Xiaowen Hu ,  Nan Li

IPC: G02F1/1334 ,  G02F1/137

Abstract: A total-reflection infrared reflection device and a preparation method thereof. The device includes two light-transmitting conductive substrates disposed oppositely, the two light-transmitting conductive substrates are packaged to form a seal cavity, in the seal cavity, opposite surfaces of the two light-transmitting conductive substrates are respectively coated with a first liquid crystal layer capable of reflecting left-handed polarized light and a second liquid crystal layer capable of reflecting right-handed polarized light, the first liquid crystal layer includes a polymer network and a cholesteric liquid crystal with a left-handed spiral structure, the second liquid crystal layer includes a polymer network and a cholesteric liquid crystal with a right-handed spiral structure, the cholesteric liquid crystal with the left-handed spiral structure can reflect left-handed polarized light, and the cholesteric liquid crystal with the right-handed spiral structure can reflect right-handed polarized light.

公开(公告)号：US20210144278A1

公开(公告)日：2021-05-13

申请号：US16618376

申请日：2018-01-18

Applicant: SOUTH CHINA NORMAL UNIVERSITY

Inventor： Jun LI ,  Miao LEI ,  Xiaofang DAI ,  Shangyuan WANG ,  Ting ZHONG ,  Chuangxue LIANG ,  Chen WANG ,  Ping XIE ,  Ruiqiang WANG

IPC: H04N5/225 ,  G02B5/30 ,  G06F17/16

Abstract: A compressed sensing based object imaging system and an imaging method thereof. The object imaging system comprises a light source generation unit (11), a filter unit (12), an image generation unit (13), an image acquisition unit (14), and an image reconstruction unit (15). The light source generation unit (11) generates experimental laser; the filter unit (12) filters high frequency scattered light and forms parallel light; the image generation unit (13) generates an experimental image in which an object image (16) and a specific measurement matrix (17) are superimposed; the image acquisition unit (14) performs compression sampling on the generated experimental image; and the image reconstruction unit (15) reconstructs sampling data to restore the object image (16). The imaging method comprises: establishing a sample database comprising the specific target object image (16); training sample images to obtain the specific measurement matrix (17); and simultaneously completing image sampling, image compression and image recognition in an all-optical system. The system and the method can greatly reduce the data volume recorded in image recognition and image matching, thus improving the real-time performance of the system, and providing a possibility of concurrent processing by machine vision and artificial intelligence.

公开(公告)号：US10899628B2

公开(公告)日：2021-01-26

申请号：US16094939

申请日：2018-03-15

Applicant: South China Normal University

Inventor： Ruqiang Huang ,  Qian Wang ,  Guanghua Wang ,  Jinghui Wang ,  Linlin Gao ,  Jingwen Zhang

IPC: C01F17/282 ,  G01N31/00

Abstract: The disclosure discloses cerium sulfate chelated sulfur dioxide, a preparation method and a use thereof. The cerium sulfate chelated sulfur dioxide has a molecular formula of Ce[SO4][SO2].2H2O. It is a white crystal and the preparation method thereof may comprise the following steps: adding anhydrous cerium sulfate to dilute sulfuric acid with stirring for dissolvation; adding a solvent followed by refluxing at 45-50° C. for 2.0-2.5 h; heating the reaction product to remove the solvent, cooling to 20° C. or lower, and adding dilute sulfuric acid to allow precipitation of all crystals; cooling down the product followed by suction filtration, washing the obtained crystals by the solvent, so that crude cerium sulfate chelated sulfur dioxide can be obtained. The solubility of the cerium sulfate chelated sulfur dioxide of the disclosure has been significantly improved compared to the anhydrous cerium sulfate. The obtained solution is colorless and transparent, so that the cerium sulfate chelated sulfur dioxide can be used as a better titrant with wide application and supreme performance.

公开(公告)号：US20200326580A1

公开(公告)日：2020-10-15

申请号：US16498755

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 ,  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：US20200182818A1

公开(公告)日：2020-06-11

申请号：US16478753

申请日：2017-12-12

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

Inventor： Guofu ZHOU ,  Rui ZHOU ,  Zhenpeng SHEN ,  Nicolaas De ROOIJ

IPC: G01N27/22

Abstract: A testing system based on sensitivity of a humidity sensor includes a humidity sensor to be tested, a capacitance measuring circuit and an upper computer, wherein an input end of the humidity sensor to be tested is connected with an output end of a gas quality and flow controller, and an input end of the gas quality and flow controller is connected with an output end of the upper computer through a data acquisition card; and an input end of the capacitance measuring circuit is connected with an output end of the humidity sensor to be tested, and an output end of the capacitance measuring circuit is connected with an input end of the upper computer.

公开(公告)号：US20200004009A1

公开(公告)日：2020-01-02

申请号：US16484882

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 WU ,  Yingying DOU ,  Fahong LI

IPC: G02B26/00

Abstract: A method for preparing an electrowetting display support plate (5), comprising the following steps: preparing a substrate (7) having an electrode layer; preparing a hydrophobic insulating layer (13) and pixel walls (20) on the substrate (7) having an electrode layer, the pixel walls (20) being made of a hydrophilic material; performing plasma etching on the substrate (7) having the pixel walls (20), the power of the plasma etching being 30-1,000 W/m2; and heating the substrate (7) subjected to the plasma etching, so as to recover the hydrophobicity of the hydrophobic insulating layer (13). According to the method, the technical bias that the display support plate (5) being treated by means of the plasma etching would influence the quality of the hydrophobic insulating layer (13) is eliminated.